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Top CCNA Exam Questions and Answers:

Q 1) What is Networking?

Ans: Networking is used to connect or operate with a network. It is the process of creating as well as using wired or wireless networks for exchanging information, ideas, files, and other electronic communication.

Q 2) What does Protocol mean?

Ans: Protocol is being defined as the rules that would be connecting two or more devices to transfer the information from one device to another. It would be helping to know how data would be transferred from one network to another network for communication.

Q 3) What is the OSI reference model?

Ans: OSI is a reference model that tells how information and data are communicated over a network. It is a conceptual framework that understands the relationships of transmission.

Q 4) What would be the different layers of the OSI model?

Ans: Basically, there are 7 layers of the OSI model. Each layer has its functionality in the OSI model.

They are:

• Layer 1 – Physical
• Layer 2 – Data Link Layer
• Layer 3 – Network
• Layer 4 – Transport
• Layer 5 – Session
• Layer 6 – Presentation
• Layer 7- Application

Q 5) What is a Switch and why we are utilizing Switches?

Ans: Switch is utilized for receiving the signal to create a frame. It forwards the packets between numerous LAN segments. It would be supporting packet control when the data is sent to the Network layer or Data Link layer of the OSI model. While sending packets, a signal gets enabled and gets accessed by reading the destination address and forwards the frame to the appropriate frame, hence we use switches.

Q 6) What are Routers?

Ans: Routing is the process to find the path on which the information or data can pass from the source to its destination. The device by which routing would be done is called Routers.

Q 7) What is the difference between Switch, Routers, as well as Hub?

Ans: Switch

A Switch is utilized for receiving the signal to create a frame. It forwards the packets between numerous LAN segments. It is considered as the platform for packet control when the data is sent at a Network layer or Data Link layer of the OSI model. It would be supporting a single broadcast domain as well as multiple collision domains.

Routers     

The router is considered to be a networking gateway device that would be utilized to forward data packets to the computer networks. A router is connected by at least a single LAN with its IP address or with LAN or WAN. A router would be supporting two broadcast domains.

Hub

In the hub, if something comes in its port then it sends it out to the others. It is considered to be less expensive as well as the least complicated. It has a single broadcast domain as well as a single collision domain

Q 8) What is Half-duplex and Full-duplex?

Ans: In half-duplex, the transmission of information or communication is one-directional only. In full-duplex, the transmission of information or communication is from both the directions.

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