For experienced recruiters looking to refine their interview strategy or those newly tasked to recruit network engineers, it’s key to learn how to effectively test the competencies of network engineering candidates. By having a set of pre-defined network interview questions, you’ll establish a baseline that will allow you to evaluate each candidate’s knowledge and experience.
Moreover, tailoring questions to align with the specifics of a candidate’s resume can offer additional insights. If candidates can articulate their experiences and skills listed on their resumes competently, it serves as a strong indicator of their expertise.
In this article, we’ll provide over 45 interview questions specifically curated for network engineers. These questions are organized into three categories, targeting junior, mid-level, and senior positions to facilitate a thorough evaluation of candidates across different levels of expertise.
Junior Network Engineer Interview Questions
These junior network engineer interview questions are aimed to evaluate technical knowledge, problem-solving skills, and adaptability to new technologies essential for identifying capable candidates in the networking field.
1. What Is The Osi Model, And Why Is It Important?
The OSI (Open Systems Interconnection) framework serves as an essential blueprint for comprehending and standardizing the operations of telecommunication or computing systems, independent of their inherent technological or structural specifics.
Its importance lies in its ability to guide the design and implementation of networks through a tiered structure. This simplifies the troubleshooting process, ensuring consistency and facilitating smooth interaction among various systems and technologies.
The OSI model’s seven layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
2. Can You Explain What A Router Is And What Are The Criteria For The Best Path Selection?
A router is a layer three network device that is used to establish communication among different networks. It has four main roles that are: Inter-network communication, best path selection, packet forwarding, and packet filtering.
Regarding the best path selection, there are three primary parameters:
- Longest prefix match
- Minimum AD (administrative distance)
- Lowest metric value
3. What Are Some Common Software Problems That Can Cause Network Defects?
Network defects can often arise from software issues such as incorrect configurations, where settings are not properly aligned with the network’s operational requirements. Another common problem is outdated software that lacks the latest security patches or performance improvements, leading to vulnerabilities or inefficiencies.
Bugs in the network software can also cause unexpected behaviors, disrupting the flow of data. It’s like having outdated or incorrect maps in our highway analogy; drivers (data packets) might end up in the wrong place or face unnecessary delays.
4. Define LAN and WAN
LAN stands for Local Area Network and it refers to the connection that exists between computers and other network devices located in a small physical location.
WAN, on the other hand, stands for Wide Area Network and refers to a telecommunications network (or computer network) that extends over a large geographical distance.
5. What Is A Backbone Network?
A backbone network serves as the core framework within a computer network, linking together various networks. It facilitates the flow of information across different Local Area Networks (LANs) or subnetworks, ensuring seamless communication between them.
A backbone manages the bandwidth and multiple channels. It also can tie together diverse networks in the same building, different buildings, and even in wide areas. Normally, the backbone’s capacity is greater than the networks connected to it.
6. Describe the Difference Between a Hub, a Switch, and a Router
A hub serves as a fundamental device in networking, linking several computers or network devices without regulating the traffic it handles. It broadcasts incoming data packets to all its ports indiscriminately.
In contrast, a switch connects network devices and intelligently directs data to the correct recipient based on MAC addresses, reducing unnecessary traffic traffic and enhancing the network’s overall efficiency.
A router connects distinct networks, guiding data packets among them by utilizing IP addresses. Unlike switches and hubs, routers are capable of executing Network Address Translation (NAT) and are equipped with more sophisticated security functionalities.
7. What Is A VLAN, And What Are Its Benefits?
A VLAN (Virtual Local Area Network) is a logical subdivision of a network that creates distinct broadcast domains within a single physical network infrastructure. This logical partitioning enhances security by isolating critical data and devices, boosts network performance by minimizing broadcast traffic, and offers superior network management and adaptability. This is achieved by organizing devices based on their roles instead of their physical proximity.
8. Explain The Primary Function Of A Firewall In A Network
A firewall is a network security device that monitors incoming and outgoing network traffic to determine if it should be permitted or denied based on specific security protocols. Its main role is to serve as a barrier that separates secure internal networks from potentially hazardous external ones, like the internet, to protect the internal network from unauthorized access, cyberattacks and other security threats.
9. Describe The Difference Between TCP And UDP
TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are transport layer protocols responsible for transferring data packets across the internet.
TCP, known for being connection-oriented, requires the establishment of a connection between the sender and recipient prior to the exchange of data. It ensures packets are delivered accurately and in the correct order, favoring applications that demand high reliability, like web browsing (HTTP/HTTPS) and email services (SMTP).
On the other hand, UDP operates without establishing a connection, offering no assurances for packet delivery, sequence, or integrity. This attribute renders UDP more swift and streamlined, ideal for scenarios where speed trumps reliability, such as in streaming media or multiplayer online games.
10. What Is NAT, And How Does It Work?
NAT (Network Address Translation) is a technique deployed by routers to convert a public IP address utilized on the Internet to a private IP address within a Local Area Network (LAN) and the other way around. This conversion allows numerous devices on a LAN to connect to the internet under a single public IP address.
By masking internal network addresses from external views, NAT enhances security, conserves the finite pool of public IP addresses, and ensures that internet traffic is accurately directed to the appropriate device within a local network.
11. Explain What DNS Is And How It Works
DNS (Domain Name System) is the internet’s mechanism for converting human-readable website names (such as www.example.com) into IP addresses (such as 192.0.2.1), that computers use to recognize one another within the network.
Whenever you type a website address into your browser, your computer consults DNS to retrieve the corresponding IP address from a DNS server. With this IP address, your computer is able to establish a connection to the server hosting the website.
12. Describe The Process Of Subnetting And Its Purpose
Subnetting involves segmenting a larger network into several smaller, logical networks, known as subnets, to enhance the manageability and security of the network. Its primary goals include boosting network performance through the minimization of congestion, increasing security by segregating clusters of devices and enhancing the allocation efficiency of IP addresses to prevent their squandering.
This process requires adjusting the network’s subnet mask, which defines the dimensions of each subnet.
13. What is a VPN, and How Does it Work?
A Virtual Private Network (VPN) establishes a protected, encrypted link over the inherently less secure internet. This encrypted pathway ensures that users can send data across the internet privately and securely, as though their devices were directly connected to a private network.
Below is a detailed breakdown of the process:
- Starting the Connection: Activating the VPN software initiates communication to the VPN server via your internet connection, encrypting the request to connect right from the start.
- Verifying User Identity: Next, the VPN server checks your login details, like your username and password, to authenticate your access. This step confirms that only verified users can use the VPN service.
- Establishing the Secure Channel: Following successful authentication, an encrypted, secure link is formed between your device and the VPN server. This encrypted link acts as a private conduit, ensuring that any data passing through it remains secure.
- Securing Data Transmission: The data you send to the VPN server travels securely within this encrypted channel, shielding it from external threats or surveillance. This layer of encryption keeps your information safe from potential cyber threats, including those from hackers, Internet Service Providers (ISP), and government entities.
- Reaching the Destination: Upon arriving at the VPN server, your data is decrypted and then forwarded to its final online destination. As the data seems to originate from the VPN server rather than your personal device, it effectively masks your actual IP address and location, thereby preserving your online anonymity.
- Receiving Data: When you request data from the internet, like accessing a website, it is first sent to the VPN server. Here, it’s encrypted once more and transmitted back through the secure tunnel to your device. Upon arrival, your VPN client decrypts the information, making it accessible for normal use.
14. What Is DHCP, And Why Is It Used In Networks?
DHCP stands for Dynamic Host Configuration Protocol. It is a network management protocol used on IP networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network. This allows devices to communicate with other IP networks.
DHCP is used to automate the process of configuring devices on the network, eliminating the need for manual IP address configuration, which can be time-consuming and prone to errors.
By using DHCP, network administrators can ensure that devices are always given the correct IP settings, including subnet mask, default gateway, and DNS server information, facilitating a smooth and efficient network operation.
15. Can You Explain What QOS Is And Why It’s Important In Networking?
QoS stands for Quality of Service, which is a technology used to manage network traffic by prioritizing certain types of data over others. This ensures that critical network services, such as VoIP (Voice over Internet Protocol), streaming media, and online gaming, receive higher priority over less critical services like file downloads or email.
QoS is important because it ensures the efficient use of the network, especially in environments where network resources are limited and need to be allocated according to the importance of the data being transmitted.
By prioritizing bandwidth-sensitive applications, QoS helps maintain the performance and reliability of these applications, preventing delays, packet loss, and jitter, which are critical for real-time communications. Essentially, QoS allows network administrators to provide different priorities to different types of traffic, ensuring that the network performs optimally for its users.
Mid-Level Network Engineer Interview Questions
These mid-level network engineer interview questions are designed to assess not only candidates technical proficiency but also their ability to apply that knowledge in real-world scenarios, demonstrating adeptness in translating theory into practical solutions.
16. What Are The Differences Between MAC Addresses And IP Addresses – How Are They Used In Networking?
MAC (Media Access Control) addresses and IP (Internet Protocol) addresses are both key components in networking used to identify devices and facilitate communication. However, they operate at different layers of the network and have different purposes.
MAC addresses are unique identifiers assigned to the network interfaces for communicators at the data link layer (which is layer 2) of the OSI model. They are used for local network communication within the same segment or broadcast domain. A MAC address is a hardware address, which means it’s embedded into the network interface card (NIC) of a device and used for directing packets on the local network. These addresses have a fixed length of 48 bits (6 bytes) and are usually represented in hexadecimal format, separated by colons or hyphens (e.g., 00:1A:C2:9B:00:59).
On the other hand, IP addresses are logical addresses used at the network layer (Layer 3) of the OSI model for identifying devices on a network and facilitating internetwork communication. Unlike MAC addresses, IP addresses are used for routing data packets across different networks, enabling devices to communicate over the internet or between different LANs (Local Area Networks). They can be either IPv4, with a 32-bit length, or IPv6, with a 128-bit length, and they are assigned dynamically by a DHCP server or statically by an administrator.
17. Explain The Purpose Of ARP And How It Works
The Address Resolution Protocol, or ARP, is essential for facilitating communication within a Local Area Network (LAN). Its primary function is to link an Internet Protocol (IP) address, which identifies a device on the network at the logical level, to its physical Media Access Control (MAC) address.
This linkage is crucial because, while devices are identified by IP addresses at the network layer, actual data link layer communication on a LAN relies on MAC addresses.
How it works? When a device, let’s call it Device A, needs to send data to another device on the same LAN, referred to as Device B, and only knows Device B’s IP address, ARP comes into play. Device A will broadcast an ARP request across the LAN, essentially asking, ‘Who has this IP address, and what is your MAC address?’ Every device on the LAN receives this broadcast, but only Device B, the one with the matching IP address, responds with an ARP reply. This reply contains Device B’s MAC address, which Device A then uses to send the data directly to Device B.
To optimize this process, Device A stores the received MAC address in its ARP cache for future reference, thereby minimizing the need for repeated ARP requests.
18. Can You Tell Me About Route Selection Priority? What Makes One Route Better Than Another?
Route selection is a key aspect of network management and optimization. It consists of the process by which network devices, like routers, decide the most efficient path for data packets to travel from their source to their destination.
The most common metrics that influence route selection are hop counts, bandwidth, delay, reliability, load and cost.
19. How Are Loops Prevented In Layer 2 Networks?
Loops in Layer 2 networks are prevented using the Spanning Tree Protocol (STP) and its advanced versions.
STP ensures a network remains loop-free by deactivating extra links, effectively preventing endless data frame circulation. Its derivatives, such as Rapid Spanning Tree Protocol (RSTP) and Multiple Spanning Tree Protocol (MSTP), offer quicker network recovery and the ability to handle multiple VLANs within a single loop-free topology, ensuring efficient and reliable network operation.
20. What Is Port Aggregation And Why Would You Use It?
Port aggregation, also known as link aggregation or EtherChannel (Cisco terminology), combines multiple network connections in parallel to increase throughput beyond what a single connection could sustain or to provide redundancy in case one of the links fails.
This technique is used to enhance network capacity and reliability, allowing for higher data rates and improved resilience by automatically redistributing load if a link goes down, thus ensuring continuous network operation.
21. What Is The Purpose Of UDP If We Could Just Pack Data Into IP Payload?
The User Datagram Protocol (UDP) serves a distinct and valuable purpose in network communications despite the possibility of directly embedding data into IP packets. One of the primary advantages of UDP over simply using the IP protocol is its introduction of port numbers, which facilitate the process of data demultiplexing to the correct application on the receiving end.
This means that UDP allows multiple applications to run on a single device simultaneously, with each application being able to send and receive data through its unique port. Without UDP, managing communication between different applications over the network would be significantly more complex.
Additionally, UDP adds minimal overhead to the data packets, providing a lightweight transport mechanism. This is particularly beneficial for applications that require fast, efficient delivery of data, such as streaming media, real-time online games, and voice-over IP (VoIP) services. These applications can tolerate some data loss but are highly sensitive to delays, making the relatively lower transmission latency and overhead of UDP preferable to the more robust error-handling and flow control mechanisms of TCP.
22. Why Use BGP If We Have OSPF?
Deciding between using Border Gateway Protocol (BGP) and Open Shortest Path First (OSPF) is primarily dictated by the differing purposes and operational scales of these protocols within network infrastructures.
BGP is the protocol underpinning the global internet, managing how packets are routed between different autonomous systems (AS), which are large networks or collections of networks under a common administration. Its primary purpose is to exchange routing information across the internet, making it essential for inter-domain routing.
BGP’s design focuses on scalability and flexibility, allowing it to handle the vast, diverse, and constantly changing topology of the global internet. It supports policy-based routing, which allows administrators to control the flow of traffic based on policies rather than just shortest-path algorithms.
On the other hand, OSPF is designed for intra-domain routing within a single autonomous system. It is a link-state routing protocol that provides fast convergence and efficient routing within an AS by constructing a complete topology map of the network. OSPF is optimized for routing within smaller, more controlled environments and cannot scale to manage the complexities of the global internet.
In essence, while OSPF is ideal for internal network routing where quick convergence and detailed topological awareness are crucial, BGP is necessary for routing between different networks that are independently managed.
The use of BGP over OSPF for internet routing is due to its ability to manage complex, decentralized networks and its support for policy-based decision-making, which is critical for the functioning of the global internet.
23. Explain The Difference Between IPv4 And IPv6. What Are The Challenges Of Migrating From IPv4 To IPv6?
The primary difference between IPv4 and IPv6 lies in their address formats, which fundamentally impact the internet’s growth and functionality.
IPv4, the fourth version of the Internet Protocol, uses a 32-bit addressing scheme, allowing for approximately 4.3 billion unique IP addresses. While this number seemed sufficient in the early days of the internet, the rapid growth of online devices and services has exhausted these addresses, necessitating a shift to a more abundant addressing scheme.
IPv6, the successor to IPv4, addresses this limitation by using a 128-bit addressing scheme, which significantly increases the number of available IP addresses to approximately 3.4×10^38. This vast address space ensures scalability for the internet’s future growth, accommodating an ever-increasing number of devices and services.
Beyond the expanded address space, IPv6 also introduces enhancements in routing and network autoconfiguration. It simplifies packet headers for more efficient processing and supports new features such as address autoconfiguration, improved multicast routing, and better security mechanisms directly within the IP layer through IPsec.
However, migrating from IPv4 to IPv6 presents several challenges. One of the primary issues is the lack of backward compatibility between the two protocols. This means that networks must either run both protocols simultaneously (dual stacking) or use transition mechanisms (like tunneling or translation) to facilitate communication between IPv4 and IPv6 systems. Such processes can introduce complexity and potential performance issues.
Additionally, the migration requires updates to network infrastructure, including routers, switches, and firewalls, to support IPv6 features. This involves significant investment in both hardware and software, as well as training for IT staff to manage and secure IPv6 networks effectively.
Despite these challenges, the migration to IPv6 is essential for the long-term sustainability and growth of the internet, providing a more robust addressing scheme and enabling a new generation of internet services and devices.
24. Describe The Process And Importance Of Network Segmentation. How Would You Implement It In A Corporate Environment?
Network segmentation is a crucial security and management strategy that involves dividing a larger network into smaller, distinct segments or subnetworks. This process is fundamental for enhancing security, improving network performance, and simplifying management.
By segmenting networks, organizations can limit access to resources, contain network problems, and reduce the scope of potential attacks. To implement network segmentation in a corporate environment, you first need to assess the organization’s specific needs, considering factors like departmental functions, types of data processed, and compliance requirements.
Next, you should establish policies that dictate how traffic should be controlled between segments. These policies are based on the principle of least privilege, ensuring entities have only the access necessary for their function. Implementing segmentation can be achieved through various means, including virtual LANs (VLANs), firewalls, and network virtualization.
VLANs can separate network traffic at the switch level, while firewalls can enforce policies between segments. Software-defined networking (SDN) offers flexibility in segmentation through software configurations.
After planning, the next step is the actual configuration of network devices to create segments. This involves configuring VLANs, firewalls, and other controls as per the defined policies.
Rigorous testing is crucial to ensure that the segmentation does not disrupt normal operations and meets security objectives.
Continuous monitoring of segmented networks is essential for security and performance. Regular reviews and updates to the segmentation strategy and policies should be conducted to adapt to changes in the network or organization.
25. Can You Explain What STP (Spanning Tree Protocol) Is And How It Prevents Network Loops?
Spanning Tree Protocol (STP) is a network protocol designed to prevent loop formations in networks with redundant paths, ensuring a loop-free topology. It operates by identifying and disabling surplus connections between switches, effectively preventing the possibility of broadcast storms that can occur when multiple paths lead to cyclic data flows.
STP achieves this by electing a root bridge and then, through a series of exchanges between bridges (switches), determines the shortest path to the root. Paths not part of this shortest path tree are placed into a blocking state, preventing them from forwarding traffic, thus eliminating loops and ensuring stable network operation.
26. How Do You Troubleshoot A Network Issue Where Users Are Experiencing Slow Performance Accessing External Websites?
Troubleshooting a network issue where users experience slow performance accessing external websites involves a systematic approach to isolate and resolve the problem.
The first step is to confirm the scope and scale of the issue: whether it affects all users or is localized to specific users or departments. This can help determine if the problem is with the end-user device, local network, or connectivity to external sites.
Next, I would check the WAN (Wide Area Network) link utilization to see if the link is saturated. High utilization could indicate excessive traffic, possibly from large file transfers or streaming, affecting overall network performance. Tools like SNMP (Simple Network Management Protocol) can monitor bandwidth usage and pinpoint heavy traffic sources.
If WAN link saturation is not the issue, I would then examine the DNS (Domain Name System) resolution times, as slow DNS responses can delay website access. Using tools like nslookup or dig can help test DNS resolution speed and accuracy.
Additionally, assessing the performance of the network’s DNS server or considering the use of a public DNS service might be necessary.
Another crucial step is to check for any recent changes in the network configuration or firewall settings that could inadvertently affect traffic flow. This includes reviewing access control lists (ACLs), Quality of Service (QoS) settings, and any web filtering services that may be throttling bandwidth to certain sites.
Finally, it’s important to verify the health and performance of external websites themselves. Using traceroute or similar tools can help identify any latency or packet loss issues in the path between the user and the website, which might be outside the immediate control of the organization’s network.
27. What Tools And Metrics Would You Use To Monitor Network Performance And Health?
Using a blend of tools and metrics allows you to maintain a pulse on network performance and health. Here are some of the most common ones (Keep in mind this answer will vary as there are many tools; the idea is that candidates are able to answer with their own toolkit and why they use it):
Performance Monitoring Tools
- Network Performance Monitors (NPMs): Tools like SolarWinds, Nagios, and PRTG Network Monitor offer real-time visibility into the performance of network devices and traffic patterns. They can track metrics such as bandwidth usage, packet loss, and latency.
- Protocol Analyzers: Wireshark is a widely used protocol analyzer that helps in inspecting the details of network traffic at a granular level. It is instrumental in identifying anomalies and inefficiencies in data transmission.
- Speed Test Tools: Tools such as Ookla’s Speedtest provide quick assessments of internet connection speed, including download and upload speeds, which are critical for troubleshooting performance issues.
Key Metrics for Network Health:
- Bandwidth Utilization: This metric measures the amount of data being transmitted over a network connection in a given time frame, helping identify bottlenecks and ensure adequate bandwidth for critical applications.
- Latency: Latency indicates the time it takes for a data packet to travel from source to destination. High latency can significantly impact applications requiring real-time communication.
- Packet Loss: Packet loss occurs when packets fail to reach their destination, which can degrade network performance and affect application reliability. Monitoring packet loss helps in pinpointing unstable connections or hardware issues.
- Jitter: Jitter measures the variability in latency over time in a network. Consistent jitter can cause issues in voice-over IP (VoIP) and video streaming services.
Security Assessment Tools:
- Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS): These tools, such as Snort or Cisco’s Firepower, monitor network traffic for suspicious activities that could indicate a security threat, providing alerts and, in the case of IPS, taking actions to block the threat.
- Firewall Management Tools: Tools like FireMon and AlgoSec manage firewall rules and policies, ensuring that firewalls are effectively protecting the network without unnecessarily impeding performance.
- Vulnerability Scanners: Tools such as Nessus or Qualys scan network devices for known vulnerabilities, helping administrators to patch potential security holes before they can be exploited.
28. Explain How Load Balancing Works And Why It’s Important For Maintaining Network Availability And Performance
Load balancing is a technique used to distribute incoming network traffic across multiple servers or network paths to ensure no single server or path becomes overwhelmed with too much traffic. This is achieved through various methods, such as round-robin, least connections, and IP hash, among others.
The primary goal is to optimize resource use, maximize throughput, minimize response time, and avoid overloading any single resource.
Load balancers can operate both at the application layer (Layer 7) and at the transport layer (Layer 4) of the OSI model, handling requests intelligently based on content type, session information, or even specific application data.
The importance of load balancing goes beyond the distribution of traffic. It is a critical component for ensuring high availability and reliability of services. If a server fails, a load balancer can redirect traffic to the remaining operational servers, maintaining the availability of applications and services without any perceptible downtime to the end-user.
Load balancing facilitates scalability by allowing additional servers to be added or removed based on the demand without any disruption to the service. This scalability ensures that as a business grows and the volume of network traffic increases, the network infrastructure can adapt seamlessly, maintaining optimal performance levels.
Additionally, load balancing can provide security benefits by acting as a gatekeeper to your servers, mitigating DDoS attacks by distributing traffic or by identifying and blocking malicious traffic before it reaches the application server.
29. Describe A Time You Had To Optimize A Network To Improve Performance. What Steps Did You Take, And What Was The Outcome?
The purpose of this question is for you to understand candidates’ hands-on experience with network optimization. Rather than just providing a generic answer, candidates focus on explaining how they implemented theoretical knowledge in a real-world scenario.
Answers may vary, but you want candidates to be very specific when it comes to the steps and the results.
Here’s how a candidate should answer:
Reflecting on my experience, there was a notable instance where I was tasked with optimizing a network to alleviate performance issues that had plagued our organization for several months.
Our users were experiencing slow application response times, particularly during peak business hours, which was beginning to affect overall productivity. My first step was to conduct a thorough analysis of the network to identify the root causes of the slowdown. Using a combination of network monitoring tools and manual inspections, I pinpointed high bandwidth consumption by streaming and file-sharing services, along with significant packet loss on our main internet connection, as the main problems.
Based on these findings, I developed a multi-faceted optimization strategy. I began by implementing Quality of Service (QoS) rules to prioritize business-critical application traffic over less essential services. This ensured that our core applications received the bandwidth needed for optimal performance, even during periods of high network demand.
I also proposed and executed a project to introduce redundancy through a secondary internet connection. This, combined with configuring load balancing, allowed us to distribute traffic more evenly, significantly reducing the load on any single connection and enhancing overall network reliability.
To address the outdated network infrastructure contributing to the latency, I spearheaded an upgrade initiative. This involved replacing old switches and routers with newer models that offered better performance and introducing smart network design principles to reduce unnecessary traffic flows. We implemented VLANs to segment the network logically, which improved security and further reduced congestion.
The results of these efforts were immediately noticeable. Application response times improved dramatically, as evidenced by our monitoring tools and user feedback. The implementation of QoS and traffic prioritization resolved the critical application performance issues, while the network upgrades and redesign efforts significantly decreased latency across the board.
Moreover, the introduction of a secondary internet connection and load balancing not only provided a failover mechanism but also improved our network’s overall throughput. This redundancy ensured that a single point of failure would no longer result in network downtime, bolstering our organization’s operational resilience.
30. How Does SSL Encryption Work For Securing Data In Transit, And What Are Its Limitations?
SSL (Secure Sockets Layer) encryption is a popular security protocol for securing data in transit between a client and a server. It operates by establishing an encrypted link that ensures all data passed between the web server and browsers remain private and integral.
The process begins with an SSL handshake, where the client and server exchange key information, verify each other’s identities (using SSL certificates), and establish a session key for encryption. This session key is then used to encrypt data for the duration of the session, ensuring that sensitive information like credit card numbers, login credentials, and personal information is securely transmitted over the internet. However, SSL encryption has its limitations.
One of the primary concerns is its susceptibility to certain types of attacks, such as man-in-the-middle (MITM) attacks, where an attacker intercepts the communication between the client and the server.
Although SSL provides a mechanism for server authentication (via certificates), it does not inherently authenticate the client, which can be a loophole for unauthorized access in some scenarios.
Additionally, SSL relies on trusted certificates issued by Certificate Authorities (CAs), and any compromise or failure in the CA infrastructure can undermine SSL’s security.
Another limitation is the performance overhead associated with establishing an SSL connection and encrypting/decrypting data, which can impact the speed of secure communications, particularly on high-traffic websites.
Senior Network Engineer Interview Questions
The questions presented are a guideline to help you understand each candidate’s level of expertise and how they apply concepts in real-world scenarios. For these high-level senior network engineer interview questions, keep in mind that answers are likely to vary depending on each candidate’s experiences.
31. Describe Your Workflow When You’re Integrating A New Service/System. What Step Do You Regard As The Most Important?
This question is useful to understand the candidate’s approach to project management as well as their capacity for strategic planning and prioritization skills, which are all crucial when it comes to a senior role.
Answer sample:
In my experience, when integrating a new service or system, my workflow begins with a comprehensive planning phase. This involves gathering requirements, assessing the current infrastructure for compatibility, and defining clear, measurable objectives for the integration. I prioritize stakeholder engagement during this phase to align expectations and ensure all business needs are addressed.
Following planning, I move to the design phase, where I outline the technical architecture and develop a detailed implementation roadmap, considering factors like scalability, security, and redundancy.
The implementation phase is executed in stages, starting with a pilot or sandbox environment to validate the integration in a controlled setting. This step is crucial for identifying potential issues early on, allowing for adjustments before full-scale deployment.
Throughout this process, I emphasize rigorous documentation and communication with all stakeholders to maintain transparency. Testing is an integral part of my workflow, encompassing unit, integration, and user acceptance testing (UAT) to ensure the new system meets all functional and performance requirements.
Post-deployment, I focus on monitoring and optimization, analyzing system performance, and making necessary adjustments to ensure optimal operation.
If I had to highlight the most important step, it would be the initial planning and requirement-gathering phase. This foundational step sets the stage for the entire project, ensuring that all subsequent actions are aligned with the organization’s goals and the system’s technical requirements. Proper planning mitigates risks, streamlines the integration process, and significantly increases the likelihood of a successful outcome.
This approach reflects my belief in the adage, “Failing to plan is planning to fail,” especially in complex network engineering projects where the scope and impact of decisions are far-reaching.
32. You’re On Call And We Have A Major Outage. You Can’t Reach Any Of The Routers In The Network And Neither Your Escalation Engineer. What Do You Do?
This question tests the candidate’s ability to handle high-pressure situations independently, showcasing their problem-solving skills and resourcefulness. You’ll also understand more about their practical knowledge and experience in diagnosing and resolving critical network issues.
Answer sample:
In the event of a major outage where routers within the network are unreachable and the escalation engineer is not available, the immediate response is critical to minimizing impact and restoring service.
The initial step involves attempting to diagnose the scope and scale of the problem using available monitoring tools and systems. This includes checking network management systems (NMS) for alerts or indicators of what might have caused the outage, such as power failures, network congestion, or security incidents.
Without access to the escalation engineer, the next step would involve following the established incident management protocol. This typically includes informing the relevant stakeholders about the incident, including management and affected departments, to ensure transparency and initiate contingency plans if necessary.
Concurrently, I would attempt to isolate the issue by checking any recent changes to the network configuration or updates that might have triggered the outage.
Leveraging the collective knowledge and resources of the team is crucial, so I would reach out to other team members or departments that might offer insights or have experienced similar issues.
In parallel, accessing backup communication channels or secondary control systems that might not be affected by the outage could provide an alternative way to diagnose or even resolve the issue. Documentation plays a crucial role in such situations.
I would document all actions taken and findings, as this information can be critical for post-mortem analysis and preventing similar issues in the future.
If the primary methods of resolution are exhausted without success, activating disaster recovery plans, such as switching to backup systems or rerouting traffic through alternate pathways, becomes necessary to maintain business operations.
33. How Would You Approach A Network Merger If We Buy Another Company?
The purpose of this question is to evaluate how candidates manage complex projects that are key for business continuity and growth. It allows you to grasp their strategic planning skills as well as their technical expertise in integrating disparate technologies and infrastructures while maintaining or improving network performance and security.
Answer sample:
Approaching a network merger after acquiring another company requires a structured and strategic methodology to ensure a smooth transition and integration of network infrastructures.
My first step would be to conduct a thorough audit of both networks to understand their architectures, technologies, and configurations. This involves identifying hardware, software, security protocols, and any custom applications or services running on both networks.
Understanding the business objectives behind the merger is crucial. It informs the integration strategy to ensure that the consolidated network supports these goals without compromising on performance, security, or scalability.
Based on the audit, I would identify areas of compatibility and concern, such as overlapping IP schemes, differing security policies, or incompatible hardware, which need to be addressed.
The next phase involves detailed planning, where I draft a roadmap for integration that includes timelines, resource allocations, and contingency plans. This plan is developed in collaboration with stakeholders from both companies to align technical actions with business priorities and to ensure buy-in from all parties involved.
Communication is key during this process. I would establish clear channels and protocols for communication among the technical teams and between the IT department and the wider organization. Keeping everyone informed helps in managing expectations and reduces the impact of the changes on day-to-day operations.
Implementation would be carried out in phases, starting with non-critical systems to minimize disruptions. This phased approach allows for testing and adjustments before full-scale integration. Throughout this process, I prioritize security to ensure that the merged network does not introduce vulnerabilities.
Finally, post-merger, I focus on optimization and consolidation, removing redundancies, and ensuring that the network operates efficiently at scale. Continuous monitoring and feedback mechanisms are put in place to quickly identify and address any issues that arise.
34. Why IPv6 If We Have Nat?
The introduction of IPv6, despite the widespread use of Network Address Translation (NAT) with IPv4, addresses several key limitations and offers significant advantages that NAT cannot fully resolve.
NAT was developed as a temporary solution to the exhaustion of IPv4 addresses, allowing multiple devices on a private network to share a single public IPv4 address.
While NAT effectively extends the life of the IPv4 address space and provides a layer of privacy and security by hiding internal IP addresses, it introduces complexity and limitations in network configuration and communication.
IPv6, on the other hand, offers a vastly expanded address space due to its 128-bit address size, compared to the 32-bit size of IPv4. This expansion virtually eliminates the need for NAT, allowing every device to have a unique global address.
35. Can You Walk Me Through The Process You Would Follow To Replace A Stack Of Switches In An Edge Wiring Closet?
This question is perfect for understanding the candidate’s practical experience with network hardware and their understanding of physical network infrastructure. It also asses the engineer’s awareness of the potential impact of such changes on the network’s operations and their ability to mitigate disruptions.
Answer sample:
Initially, I would review the current network architecture and the specific role of the switches to be replaced.
Understanding the configurations, VLANs, and routing protocols in use is crucial. I’d also inventory the physical connections and document the existing setup.
Planning involves scheduling the replacement during off-peak hours to minimize impact and notify affected stakeholders of the planned downtime.
Before proceeding with the replacement, I’d ensure that the current configuration of each switch is backed up. This step is vital for quickly restoring services in case of any issues during the transition.
With preparations complete, I’d proceed to physically replace the old switches with the new ones. This involves carefully disconnecting and labeling cables, removing the old switches, mounting the new switches in the rack, and reconnecting the cables as per the documented setup.
Once the new switches are physically installed, I’d configure them according to the documented settings of the old switches. This includes setting up VLANs, implementing security policies, and configuring routing protocols as necessary.
Wherever possible, I’d leverage the backup configurations to expedite this process.
After configuration, comprehensive testing is essential to ensure the new switches are correctly integrated into the network and operating as expected. This includes testing connectivity, bandwidth, and latency, as well as verifying that all security features are active and effective.
With the new switches operational, I’d closely monitor the network performance to identify any issues early. This phase also allows for fine-tuning configurations to optimize network performance. Finally, updating network documentation to reflect the new hardware and configurations is crucial.
I’d also conduct a post-implementation review to evaluate the replacement process, identify lessons learned, and make recommendations for future upgrades.
36. From The Moment I Power On My Computer, Launch The Web Browser, And Navigate To Google.Com, Could You Describe The Sequence Of Events That Occur Within The Network To Facilitate This Action?
This question can take either a minute or an hour to answer, depending on the candidate’s knowledge, which makes it great to define their expertise level. There are many layers of detail.
Usually, if they talk about packet-level stuff on routers or if they spend a lot of time talking about what happens on a host before a packet even hits a router it’s a good sign.
For a technical and detailed explanation, GitHub has a great guide that can help you further understand all the complexities of the potential answers.
37. Explain The Process And Considerations For Implementing End-To-End Encryption Across A Multinational Corporation’s Network
Implementing end-to-end encryption (E2EE) across a multinational corporation’s network demands a meticulous process and consideration of various factors to uphold data security while maintaining operational efficiency.
The initial step requires a comprehensive assessment of data flows within the corporation, identifying the types of sensitive information transmitted and the communication channels utilized.
Understanding regulatory requirements and industry standards related to data privacy and security is crucial, as these factors significantly influence the design and implementation of E2EE solutions.
Following the assessment, the selection of encryption protocols and technologies that align with industry standards and meet the corporation’s needs is paramount. Commonly utilized protocols include TLS (Transport Layer Security) for securing communication over the Internet and IPsec (Internet Protocol Security) for securing network traffic within a private network.
Factors such as encryption strength, compatibility with existing systems, and support for key management must be carefully considered during the selection process.
Once encryption protocols and technologies are determined, the deployment of encryption solutions ensues, ensuring end-to-end protection of data transmissions. Encryption may be implemented at various network points where data is transmitted, including the application layer (e.g., using HTTPS for web traffic), network layer (e.g., IPsec VPNs for site-to-site connectivity), and data-at-rest (e.g., encryption of stored data on servers and endpoints).
Effective key management practices are essential for the successful implementation of E2EE solutions. Robust procedures for generating, storing, and distributing encryption keys securely must be established. Key rotation, revocation, and recovery processes should be defined to maintain the integrity and confidentiality of encrypted data.
Hardware security modules (HSMs) or key management platforms may be employed to enhance security and compliance. Integration of E2EE solutions with existing network infrastructure, applications, and security controls must be seamless to prevent disruptions and ensure consistent enforcement of security policies.
Testing interoperability and compatibility with network devices, firewalls, proxies, and other security appliances is imperative to maintain operational continuity and data protection. User education and awareness initiatives play a crucial role in promoting secure communication practices and encouraging the proper use of encryption tools.
Employees should be educated about the importance of E2EE and their responsibility in maintaining data security. Training programs should cover secure communication practices, encryption policies, and adherence to security guidelines.
Continuous monitoring and compliance efforts are necessary to detect and respond to security incidents related to encryption. Monitoring mechanisms should be implemented to identify unauthorized access attempts, encryption key compromises, and other security threats.
Regular audits of encryption configurations and practices ensure compliance with regulatory requirements and industry standards. Scalability and performance optimization are critical considerations in designing E2EE solutions to accommodate the corporation’s growing network infrastructure and data volumes.
Encryption algorithms and configurations should be optimized to minimize latency and overhead, particularly in latency-sensitive applications or high-throughput environments. Developing incident response plans and contingency measures for encryption-related security incidents is essential for effective risk management.
Procedures for incident detection, containment, investigation, and recovery should be established, including communication with stakeholders and regulatory authorities. Finally, continuous evaluation and improvement of E2EE implementations are essential to strengthen encryption controls and adapt to evolving threats and compliance requirements.
Security assessments, penetration testing, and vulnerability scanning should be conducted regularly to identify areas for enhancement and ensure the ongoing effectiveness of encryption measures.
38. Describe How You Would Design A Network To Support A Hybrid Work Environment With A Significant Number Of Remote Users While Ensuring Security And Performance
This question will allow you to learn more about the candidate’s understanding of modern network challenges and how they can come up with innovative solutions. Their response should provide insights into their technical proficiency and strategic thinking.
Answer sample:
Designing a network to support a hybrid work environment with a significant number of remote users while ensuring security and performance requires a strategic approach.
Firstly, I would assess the organization’s requirements, considering factors such as the number of remote users, their locations, and the applications they need to access.
Based on this assessment, I would design a network architecture that incorporates scalable and flexible technologies to accommodate remote access, such as VPNs or Zero Trust frameworks, while ensuring optimal performance through technologies like SD-WAN.
Then, I would implement robust security measures such as firewalls, intrusion detection systems, and endpoint security solutions to protect against cyber threats. Network segmentation would be utilized to isolate sensitive data and applications, ensuring that remote users only have access to the resources they need.
Additionally, I would ensure compliance with industry regulations and best practices to mitigate risks and safeguard data. To optimize network performance for remote users, I would leverage technologies like content delivery networks (CDNs) to cache content closer to end-users, reducing latency and improving user experience.
Quality of Service (QoS) mechanisms would be implemented to prioritize critical applications and ensure consistent performance across the network. Regular monitoring and performance tuning would be conducted to identify and address any bottlenecks or performance issues proactively.
39. Discuss The Protocols And Technologies You Would Employ To Build A Fault-Tolerant Network. How Do You Ensure Minimal Downtime?
By asking this question, you’ll assess candidates’ understanding of fault tolerance principles and how they are able to design resilient network architectures. The question allows candidates to show their knowledge of relevant protocols and technologies required to achieve fault tolerance.
Answer sample:
Designing a fault-tolerant network and ensuring minimal downtime are critical tasks for a senior network engineer. To achieve fault tolerance, I would employ a combination of protocols and technologies designed to eliminate single points of failure and provide redundancy at various levels of the network architecture.
At the core of the network, I would implement protocols such as Spanning Tree Protocol (STP) to prevent loops and ensure a loop-free topology.
Additionally, I would use technologies like Virtual Router Redundancy Protocol (VRRP) or Hot Standby Router Protocol (HSRP) to provide router redundancy, allowing for seamless failover in the event of a router failure.
At the access layer, I would leverage technologies like Link Aggregation (LACP) to create aggregated links between switches, increasing bandwidth and providing redundancy in case of link failures. Redundant power supplies and hot-swappable components would be utilized to minimize the impact of hardware failures.
I would also ensure geographic redundancy by deploying redundant data centers or remote sites connected via diverse network paths to mitigate the risk of site-wide outages due to natural disasters or other catastrophic events.
To ensure minimal downtime, I would implement proactive monitoring and alerting systems to detect and address issues before they impact network performance. Regular maintenance and firmware updates would be scheduled during maintenance windows to minimize disruption to operations.
Additionally, I would establish comprehensive disaster recovery and business continuity plans, including regular backups and failover procedures, to quickly restore services in the event of a network failure.
40. How Do You Approach The Migration Of Data Center Resources To The Cloud While Ensuring Business Continuity?
The answer to this question will allow you to gain insight into the candidate’s ability to develop a comprehensive migration plan that aligns with organizational objectives and manage technical complexities related to network architecture, security, and performance optimization.
Answer sample:
To migrate data center resources to the cloud while ensuring business continuity, I would adopt a systematic approach focused on thorough planning, risk mitigation, and effective execution.
Firstly, I would conduct a comprehensive assessment of the current infrastructure, identifying workloads suitable for migration based on factors such as data sensitivity and performance requirements.
Next, I would develop a detailed migration plan, outlining specific steps, timelines, and resource allocation while also considering potential risks and mitigation strategies.
Throughout the migration process, I would prioritize minimizing disruption to operations by implementing phased migrations, conducting thorough testing, and establishing rollback procedures as needed.
Post-migration, I would monitor the performance of cloud-based resources closely, optimize configurations, and regularly review disaster recovery and business continuity plans to maintain resilience.
41. Explain The Differences Between SD-WAN And Traditional WAN Technologies. What Are The Benefits And Challenges Of Implementing SD-WAN In An Existing Network?
SD-WAN (Software-Defined Wide Area Network) differs from traditional WAN technologies in several key aspects.
Firstly, SD-WAN leverages software-defined networking (SDN) principles to abstract network control and management, enabling centralized management and dynamic traffic routing based on application requirements and network conditions. In contrast, traditional WANs typically rely on static configurations and manual management of network devices.
Secondly, SD-WAN utilizes multiple connection types, including MPLS, broadband internet, and LTE, to create a hybrid network, optimizing cost and performance. Traditional WANs often rely heavily on MPLS circuits for connectivity, which can be costly and less flexible.
Additionally, SD-WAN offers enhanced security features, including encryption and segmentation, to protect data as it traverses the network. Traditional WANs may require additional security appliances or configurations to achieve similar levels of security.
One of the key benefits of implementing SD-WAN in an existing network is the ability to achieve improved performance and user experience. SD-WAN dynamically routes traffic over the most optimal path based on real-time network conditions, resulting in enhanced application performance and responsiveness. This can lead to higher productivity and satisfaction among end-users, as applications perform better and respond more quickly to user interactions.
SD-WAN also offers cost savings opportunities for organizations by reducing WAN expenses. By utilizing cheaper broadband internet connections alongside MPLS circuits, SD-WAN can significantly lower WAN costs without sacrificing performance or reliability.
However, implementing SD-WAN in an existing network also presents several challenges, especially in environments with multiple legacy systems or complex network architectures. Organizations may need to invest time and resources in planning and coordination to ensure a smooth integration of SD-WAN with their existing network infrastructure.
Additionally, managing Quality of Service (QoS) across multiple connection types and service providers can be challenging with SD-WAN. Organizations must carefully configure and monitor QoS settings to maintain consistent performance levels for critical applications and services.
42. Detail Your Experience With Network Virtualization. How Do You Manage And Secure Virtual Networks Differently From Physical Networks?
The importance of this question is that it provides a holistic view of the candidate’s qualifications and suitability for modern IT environments, allowing you to assess their expertise, management approach, adaptability and problem-solving skills.
Answer sample:
Managing virtual networks requires a different approach compared to physical networks, where the focus is predominantly on hardware-centric configurations. In contrast, virtual network management emphasizes the utilization of software-defined policies and automation.
In my role, I’ve used tools like VMware NSX and Cisco ACI to facilitate the provisioning, configuration, and monitoring of virtual networks. This approach ensures scalability, agility, and centralized control over network resources.
Securing virtual networks involves addressing specific vulnerabilities and threats inherent to virtualized environments. To mitigate risks associated with hypervisor vulnerabilities, VM escape attacks, and lateral movement within virtualized environments, I’ve implemented granular access controls, micro segmentation, and network isolation techniques.
Additionally, conducting regular security audits, vulnerability assessments, and compliance checks is crucial to maintaining the integrity and confidentiality of virtual network assets.
43. Discuss Your Approach To Diagnosing Intermittent Network Issues That Do Not Immediately Present A Clear Root Cause. How Do You Document And Track These Issues?
This question focuses on understanding how candidates deal with diagnosing and resolving complex network issues in a timely and efficient manner.
Answer sample:
When faced with intermittent network issues that lack an immediate clear root cause, my approach begins with gathering as much information as possible to understand the scope and nature of the problem.
This typically involves analyzing network logs, conducting packet captures, and utilizing network monitoring tools to identify patterns or anomalies in network traffic.
Once I have a comprehensive dataset, I systematically analyze potential causes, considering factors such as network configuration changes, hardware failures, software bugs, or environmental factors like electromagnetic interference.
To document and track these issues, I maintain detailed incident reports that outline the steps taken during the diagnosis process, including any observations, findings, and actions taken to address the problem. This documentation serves as a valuable reference for tracking progress, sharing insights with team members, and providing updates to stakeholders.
Throughout the diagnostic process, I prioritize communication and collaboration, consulting with colleagues, vendors, and other subject matter experts as needed to validate hypotheses and explore potential solutions.
In cases where the root cause remains elusive, I adopt a systematic and methodical approach, leveraging diagnostic tools and techniques to narrow down possibilities and eliminate potential causes one by one. This may involve implementing temporary fixes or workarounds to mitigate the impact of the issue while continuing to investigate and troubleshoot.
44. How Do You Evaluate The Security Posture Of Your Network? Discuss The Methodologies And Tools You Use For Penetration Testing And Vulnerability Assessments
This question is ideal for when you’re trying to understand the candidate’s expertise in network security and risk management.
Answer sample:
Evaluating the security posture of a network is a multifaceted process that requires a comprehensive approach. I employ various methodologies and tools for penetration testing and vulnerability assessments to ensure the robustness of our network security measures.
One key methodology I use is penetration testing, which involves simulating real-world cyber attacks to identify potential vulnerabilities and assess the effectiveness of our defensive measures. I often conduct both internal and external penetration tests, leveraging automated tools like Metasploit and Burp Suite, as well as manual testing techniques to identify vulnerabilities that may evade automated scans.
In addition to penetration testing, I regularly perform vulnerability assessments to proactively identify and remediate weaknesses in our network infrastructure. This involves using vulnerability scanning tools such as Nessus, OpenVAS, or Qualys to scan our network for known vulnerabilities in software, configurations, or system settings.
These assessments provide valuable insights into areas of potential risk, allowing us to prioritize remediation efforts based on the severity and impact of identified vulnerabilities.
45. Describe How You Would Use Machine Learning Or AI Technologies To Enhance Network Performance And Security. Provide A Specific Example Or Theoretical Application
This question allows you to dig into candidates’ ability to innovate and use advanced techniques to solve complex challenges in network management. Additionally, by providing a specific example or theoretical application, the candidate can demonstrate their creativity and strategic thinking.
Answer sample:
In leveraging machine learning or AI technologies to enhance network performance and security, I would focus on developing predictive analytics models to anticipate and prevent potential network issues before they occur.
For example, by analyzing historical network data and patterns using machine learning algorithms, we can identify anomalies or deviations from normal behavior that may indicate security threats or performance degradation.
These insights enable proactive interventions, such as automated traffic rerouting or security policy adjustments, to mitigate risks and optimize network efficiency in real time.
Additionally, AI-powered anomaly detection systems can continuously adapt and improve over time, enhancing our network’s resilience against evolving threats and dynamic traffic patterns.
Bonus Questions
- What do you know about X protocol?
If you need a candidate to be familiar with specific technologies or protocols, the easiest way to understand if they know what they’re talking about is by asking simple questions like this one. Rather than providing generic answers, the idea is that candidates are able to tell you everything they know about, in this case, X protocol and their experience implementing it.
- Tell me about the biggest production outage you ever caused, and how you fixed it.
The best part of this question is that you’ll be able to identify the candidate’s level of experience. The size of the network outage caused by the candidate can reveal the scale of environments they’ve worked in and the level of responsibility they’ve had in their previous roles. A candidate who has managed to resolve a significant outage on a large network demonstrates their ability to handle high-pressure situations and effectively coordinate with cross-functional teams to restore services promptly.
- What is the most interesting or challenging problem you have worked on? What was the solution?
One of the most important parts of this question is that candidates are able to show if they are capable of learning and being creative when it comes to problem-solving.
- Discuss a time when you had to negotiate with vendors for network hardware or software. How did you ensure you got the best value and met technical requirements?
This question evaluates a candidate’s ability to manage vendor relationships, negotiate contracts and make strategic decisions.
- How do you approach leading a team through a major network upgrade or overhaul? Can you give an example of how you’ve successfully managed such a project?
By asking about the candidate’s approach to leading a team through such a project and requesting an example of a successful project they’ve managed, you can gain insights into their strategic planning, communication skills, and ability to execute complex initiatives.
- Can you talk about a time when you had to manage stakeholder expectations for a network-related project that was not going according to plan? How did you handle communication and project realignment?
This question provides insight into the candidate’s approach to stakeholder communication during difficult situations. Managing stakeholder expectations requires clear and transparent communication, empathy, and the ability to establish trust and credibility. Candidates should discuss how they communicated with stakeholders, provided updates on project status, and addressed concerns or issues as they arose.
What to Keep in Mind When Deciding to Hire a Network Engineer
When hiring a network engineer, you have several aspects to keep in mind. Firstly, you need to make sure they can fulfill your expectations by having the necessary skills. But, besides the hard skills, you will also want to work with someone who understands the way your team and your company work.
You can set up a strong HR team to help you look for your ideal candidate. Or, if you want to speed up this process, feel free to reach out.
As a remote working recruitment agency specializing in tech staffing, we know all the benefits that hiring remote employees brings to the table, and therefore, we are devoted to helping companies experience those benefits as well.
We can help you hire a talented remote network engineer who, besides having the skills needed, will also adapt easily to your company and culture. Let’s talk!
