Commonly Asked Networking Interview Questions And Answers | Set 6

1) What is the use of encryption and decryption?

Ans) Encryption is the process of converting the transmission data into another form that is not read by any other device other than the intended receiver.

Decryption is the process of converting back the encrypted data to its normal form. An algorithm called cipher is used in this conversion process.

2) Brief Ethernet?

Ans) Ethernet is nothing but a technology that is used to connect computers all over the network to transmit the data between each other.

For example, if we connect a computer and laptop to a printer, then we can call it as an Ethernet network.

Ethernet acts as the carrier for internet within short distance networks like a network in a building.

The main difference between Internet and Ethernet is security. Ethernet is safer than the internet as Ethernet is a closed loop and has only limited access.

3) Explain Data Encapsulation?

Ans) Encapsulation means adding one thing on top of the other thing. When a message or a packet is passed through the communication network (OSI layers), every layer adds its header information to the actual packet. This process is termed as Data Encapsulation.

Note: Decapsulation is exactly the opposite of encapsulation. The process of removing the headers added by the OSI layers from the actual packet is termed as Decapsulation.

4) How are networks classified based on their connections?

Ans) Networks are classified into two categories based on their connection types. They are mentioned below:

Peer-to-peer networks (P2P): When two or more computers are connected together to share resources without the use of a central server is termed as a peer-to-peer network. Computers in this type of network act as both server and client. Generally used in small companies as they are not expensive.

Server-based networks: In this type of network, a central server is located to store the data, applications etc of the clients. The server computer provides the security and network administration to the network.

5) Define Pipelining?

Ans) In Networking when a task is in progress another task gets started before the previous task is finished. This is termed as Pipelining.