Networking Interview Questions

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Networking Interview Questions

Whether it is for computer courses entrance exams, the technical aptitude test for interview or even in personal Interview, networking interview questions form part of a range of ability testing scenarios. Here are some of the most popular questions and their answers you can expect to encounter during a networking interview!

1. What is a Network?
Generally connected through a physical transmission medium, a network is nothing but a set of devices connected to each other. The internet is the most common example of a network.

2. What is a Node?
The point of connection, be it a computer or any other device is called a node. 

3. What do you understand about Network Topology? Mention its different types.
There are several ways in which the devices and layouts of a network can be connected to each other. This arrangement is called a network topology. 

  • Bus Topology: each node is connected to a single cable. This cable is also referred to as a central cable or bus.
  • Ring Topology: Each node is connected to at least two nodes.
  • Star Topology: Every node is connected to one single device. This device is otherwise termed as a central device.
  • Tree Topology: This can be said to be a mixture of both star and bus network topology wherein a single bus connects all the star networks.
  • Mesh Topology: Here, all nodes are typically connected to each other. However, this type of a topology can also be partially connected.
  • Hybrid Typology: This combines two or more network topologies into one and creates a new one.

4. Explain the point-to-point link.
A direct connection in a network between two computers is otherwise known as a point to point link.

5. Explain HTTP and HTTPS.
HyperText Transfer Protocol or HTTP allows for the display of web content.
HTTP Secure facilitates encrypted communication over a computer network. 

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6. Define the OSI Reference Model and name its layers.
An Open System Interconnection [OSI] is a reference model that refers to the manner how applications can communicate with each other in a networking system. Its layers are:

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  • Physical Layer
  • Network Layer
  • Data Link Layer
  • Transport Layer 
  • Presentation Layer
  • Session Layer
  • Application layer

7. Explain Hub, Switch and Router.
Hub: It is the most basic device for connection that contains multiple ports.
Switch: Mainly used for forwarding packets in a network.
Router: The smartest device of all, it is located at the gateway and forwards data packets

8. Point out the distinctions between Domain and Workgroup.

Domain Workgroup
Rules of authentication are set by Centralised authentication servers Rule of authentication varies by computer to computer and user by user
One server computer grants permission to other computers in terms of access and security All computers have the same configurations and settings; No permission is required
All computer devices and user accounts are registered in a central database Separate database for each computer
Modifications in one computer affect all connected computers Modifications made in one computer are limited to that computer
Maximum number of connections is unlimited The maximum number of connections is 20.

9. What do you understand by VPN?
A Virtual Private Network or VPN allows for a secure connection to be established across a network, generally the Internet.

More Networking Interview Questions
The list doesn’t end here! Apart from the abovementioned questions,  we have collated a list of some more networking interview questions below: 

  • Explain NIC
  • Explain the differences between the Internet, Intranet and Extranet.
  • List the characteristics of an effective network.
  • Briefly define DNS.
  • Explain the basic functions of a Firewall?
  • Encryption and Decryption. Identify the difference.
  • Give the meaning of Data Encapsulation
  • What is an Encoder and a Decoder?
  • List the elements of protocols.
  • What is an IP address?
  • What is Bandwidth?
  • What is the function of a router?
  • What is a MAC address?
  • What is ANSI?
  • Elucidate the basic differences between TCP and UDP.
  • Give a brief overview of DHCP.
  • How is a Static IP different from a Dynamic IP?
  • What is DNS?
  • What is the expanded form of FTP?
  • What is PAN, LAN, MAN, and WAN? Are there any differences?
  • What is a cookie?

Having in-depth knowledge over networking and security issues as well as communication skills and creative thinking keeps you in good standing while tackling networking interview questions. Apart from this, you also require a resume that highlights your achievements well! If you have any doubts, consult the experts at Leverage Edu who will assist in crafting an impeccable resume. Thus helping you take a step towards a rewarding career!

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