Network Engineer Interview Questions List

Latest Network Engineer Interview Questions and Answers 2024 Edition

Network engineers regularly have wide positions. In a given quarter, they may be entrusted with anything from the execution and management of an inside network to sorting out why the company's switches aren't working any longer. If you're preparing for your next network engineering job interview, our guide on Network Engineer Career Path will provide invaluable insights and interview tips.

Presently, on the off chance that you are searching for a task that is associated with the Computer Network then you need to plan for the Computer Network Interview Questions.

PC Network is a bunch of PCs that are associated with one another for sharing assets. The significant sharing of assets over the association is the Internet.

The best illustration of a PC network is the Internet. Another example of PC networks is intranet facilities within organizations.

The facts confirm that each interview is distinctive according to the diverse occupation profiles.

Here, we have arranged the significant Computer Network Interview Questions and Answers to assist you with achieving your interview.

In this article, we have compiled a list of the top network engineer interview questions and answers to help you prepare. This list of top network engineer interview questions and answers has been compiled in consultation with industry experts and trainers.

 

List of Top Network Engineer Interview Questions and Answers

The top network engineer interview questions and answers have been divided into seven sets to help you segment them and prepare.

It is highly beneficial to go set by set in your preparation to be thorough and stand a good chance at securing the position.

 

Top Network Engineer Interview Questions and Answers for Beginners

1) What is a LAN? 

A LAN stands for Local Area Network. It refers to the connection among computers and other network devices located within a small physical area.

 

2) What is a hub? 

A hub refers to a point or joint where a connection occurs. It can be a computer or device that is part of a network. At least two hubs are needed to form a network connection.

 

3) What are switches? 

Switches can connect two or more network segments. These are intelligent network devices that store information in their routing tables, like paths, hops, and bottlenecks. With this information, they can determine the best path for data to move. Switches work at the OSI Network Layer.

 

4) What is data encapsulation? 

Data encapsulation is the process of breaking data into smaller, manageable pieces before it is transmitted across the network. In this process, source and destination addresses are appended to the headers, along with error checks.

 

5) Describe network topology. 

Network Topology refers to the layout of a computer network. It shows how devices and cables are spread out, as well as how they connect.

 

6) What is a VPN? 

A VPN stands for Virtual Private Network, a technology that allows a secure tunnel to be created across a network like the Internet. For example, VPNs enable you to set up a secure dial-up connection to a remote server.

 

7) What is NAT? 

NAT stands for Network Address Translation. This is a protocol that provides a way for multiple computers on a common network to share a single connection to the Internet.

 

8) What is WAN? 

WAN stands for Wide Area Network. It is an interconnection of computers and devices that are geographically dispersed. It connects networks located in different regions and countries.

 

9) What is the OSI Physical Layer? 

The physical layer performs the transformation from data bits to electrical signals and vice versa. This is where network devices and cable types are considered and configured.

 

10) What is a proxy server? 

 Proxy servers primarily prevent external users from identifying the IP addresses of an internal network. Without knowledge of the correct IP address, the physical location of the network cannot be determined. This makes network locations more secure.

 

Top Network Engineer Interview Questions and Answers for Intermediates

1) What is the spine network? 

A spine network is a centralized framework designed to distribute various routes and data to multiple networks. It also handles the management of bandwidth and multiple channels.

 

2) What is a hub-to-hub connection? 

A hub-to-hub connection refers to a direct connection between two computers on a network. A hub-to-hub connection does not need any other network devices besides connecting a cable to the NIC cards of the two computers.

 

3) What is anonymous FTP? 

Anonymous FTP is a way of granting user access to files on public servers. Users allowed access to data on these servers do not need to identify themselves but instead log in as anonymous guests.

 

4) What is a subnet mask? 

A subnet mask is combined with an IP address to identify two parts: the extended network address and the host address. Like an IP address, a subnet mask is made up of 32 bits, and it determines the network and host portions.

 

5) What is the maximum length allowed in a UTP cable? 

A single segment of UTP cable has an effective length of 90 to 100 meters. This limit can be overcome by using repeaters and switches.

 

6) How does network topology affect network setup? 

Network topology dictates what media you should use to interconnect devices. It also serves as a basis for selecting the materials, connectors, and terminations suitable for the configuration.

 

7) What is RIP? 

RIP, or Routing Information Protocol, is used by routers to send data from one network to another. It effectively manages routing data by broadcasting its routing table to all other routers within the network.

 

8) What is the importance of carrying out a Fault Tolerance System? 

A fault tolerance system ensures continuous data availability by eliminating a single point of failure.

 

9) What does 10Base-T mean? 

The 10 refers to the data transfer rate, which in this case is 10 Mbps. The term "Base" refers to baseband, as opposed to broadband.

 

10) How would you handle a network using a router? 

 Routers have a built-in console that allows you to configure various settings, such as security and data logging. You can assign restrictions to computers, like what resources they are allowed access to or when they can browse the Internet. You can also impose restrictions on what websites are not visible across the entire network.

 

Top Network Engineer Interview Questions and Answers for Experienced Professionals

1) What is COBIT® (Control Objectives for Information and Other Related Technologies)? 

COBIT® is a framework for developing, implementing, and monitoring information technology and management practices. It is a framework by ISACA (Information System Audit and Control Association) designed for all IT governance to bridge the gap between technical issues, business risk, and control requirements.

 

2) What is the significance of carrying out a Fault Tolerance System? 

Implementing a fault tolerance system ensures that data is continuously available by eliminating a single point of failure.

 

3) How does network topology affect network setup? 

Network topology dictates what media you should use to interconnect devices and serves as a basis for selecting the materials, connectors, and terminations suitable for the configuration.

 

4) How are tunnels used in networking? 

Tunnels create a virtual passage for data exchange between two communicating computers without using IPsec themselves. The gateway connecting their LANs to the transit network creates a virtual tunnel and uses the IPsec protocol to secure all communication passing through it.

 

5) Explain the significance of Encryption on a network. 

Encryption is the process of encoding information into a code that is unintelligible to unauthorized users. This data is then decoded or decrypted back to its normal, readable format using a secret key or password. Encryption ensures that data intercepted in transit remains unreadable, as the user must have the correct password or key to decrypt it.

 

6) What is multicast routing? 

Multicast routing is a form of broadcasting that sends a message to a selected group of recipients rather than transmitting it to all users on a subnet.

 

7) What is a private IP address? 

Private IP addresses are assigned for use on intranets. These addresses are used for internal networks through the IP address and are not routable on external public networks. This ensures that no conflicts are present among internal networks.

 

8) What is the OSI Session Layer? 

The OSI Session Layer provides the protocols and means for two devices on the network to communicate with each other by holding a session. This includes establishing the session, managing data exchange during the session, and terminating the session upon completion.

 

9) What are proxy servers, and how do they protect computer networks? 

Proxy servers primarily prevent external users from identifying the IP addresses of an internal network. Without knowledge of the correct IP address, the physical location of the network cannot be determined. This data on IP addresses can help identify the network's location. Proxy servers can make a network invisible to external users.

 

10) What is the function of the OSI Session Layer? 

 The OSI Session Layer provides the protocols and means for two devices on the network to communicate with each other by holding a session. This includes establishing the session, managing data exchange during the session, and terminating the session upon completion.

 

Top Network Engineer Interview Questions and Answers for Advanced Professionals

1) What is the profile in terms of networking concepts? 

Profiles are the configuration settings created for each user. A profile could be created that places a user in a group, for example.

 

2) What is sneakernet? 

Sneakernet is believed to be the earliest form of networking where data is physically transferred using removable media, such as a disk or tapes.

 

3) What protocols fall under the TCP/IP Internet Layer? 

Four protocols are managed by this layer: ICMP, IGMP, IP, and ARP.

 

4) When it comes to networking, what are rights? 

Rights refer to the authorized permission to perform specific actions on the network. Each user on the network can be granted individual rights, depending on what needs to be considered by that user.

 

5) What is one fundamental requirement for establishing VLANs? 

VLANs are required at the switch level. There is only one broadcast domain at the switch level. This means whenever a new user is connected to a switch, they become part of the same broadcast domain, so VLANs are needed to separate these domains.

 

Conclusion

Network Engineering has become a popular career choice amongst a lot of professionals these days. This is motivated by the lucrative compensation made by qualified Network Engineers.

To secure a good job in this domain, it is important to be thorough with the top network engineer interview questions and answers. This list has been compiled by industry experts to help you land a good job.

It is recommended that you do a training course from a reputed training partner like Sprintzeal to help lay a strong knowledge base in this domain.

This knowledge combined with the studying of these top network engineer interview questions and answers will help you in your career.

If you are headed for your interview, be sure to go through this blog on top network engineer interview questions and answers to have a good chance of securing it. All the best!

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