CCNA Interview Questions and Answers

1Q) Define Protocol?

Ans: A Protocol is a device that connects data from one system to another. It will verify how data is transmitted between the networks and devices.

2Q) Mention IP Address Size?

Ans: IPV6 is a 128-bit address and IPV4 is a 32-bit address.

3Q) Mention the Range of Class A address?

Ans: It supports 16 million hosts on each of 127 networks, and it ranges from to

4Q) Mention the Range of Class B Address?

Ans: It supports 65000 hosts on each of 16000 networks, and it ranges from to

5Q) Mention the Range of Class C Address?

Ans: It supports 254 hosts on each of 2 million networks, and ranges from to



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6Q) What are the similarities between dynamic IP addressing and static IP addressing?

Ans: Dynamic IP addresses are assigned with the help of DHCP Server and Static IP addresses are assigned with the help of a Network Administrator.

7Q) In the Cisco router, what are the different memories used?

Ans: The memories used in the router are ROM, NVRAM, RAM, and Flash.

8Q) How many pins does the serial port of the router have?

Ans: The computer also is known as com port will available in 25 pin or 9th pin. In the router, we have 60 pins.

9Q) Define Routing?

Ans: A Routing is performed by a committed device called a Router. It is the process of selecting the paths in the network and forwards the data from source to destination through it.

10Q)What are the different types of cable, Explain?

Ans: Console, Serial, Cross, and straight are some cable used in networking. A console cable is used to access the router, Serial cable is used to connect the router to another router or switches from a PC.