Computer Networks MCQs Quiz Multiple Choice Questions & Answers

1. Computer Network is

1. Collection of hardware components and computers
2. Interconnected by communication channels
3. Sharing of resources and information
4. All of the Above

2. What is a Firewall in Computer Network?

1. The physical boundary of Network
2. An operating System of Computer Network
3. A system designed to prevent unauthorized access
4. A web browsing Software

3. How many layers does OSI Reference Model has?

1. 4
2. 5
3. 6
4. 7

4. DHCP is the abbreviation of

1. Dynamic Host Control Protocol
2. Dynamic Host Configuration Protocol
3. Dynamic Hyper Control Protocol
4. Dynamic Hyper Configuration Protocol

5. IPV4 Address is

1. 8 bit
2. 16 bit
3. 32 bit
4. 64 bit

6. DNS is the abbreviation of

1. Dynamic Name System
2. Dynamic Network System
3. Domain Name System
4. Domain Network Service

7. What is the meaning of Bandwidth in Network?

1. Transmission capacity of a communication channels
2. Connected Computers in the Network
3. Class of IP used in Network
4. None of Above

8. ADSL is the abbreviation of

1. Asymmetric Dual Subscriber Line
2. Asymmetric Digital System Line
3. Asymmetric Dual System Line
4. Asymmetric Digital Subscriber Line

9. What is the use of Bridge in Network?

1. to connect LANs
2. to separate LANs
3. to control Network Speed
4. All of the above

10. Router operates in which layer of OSI Reference Model?

1. Layer 1 (Physical Layer)
2. Layer 3 (Network Layer)
3. Layer 4 (Transport Layer)
4. Layer 7 (Application Layer)

11. Each IP packet must contain

1. Only Source address
2. Only Destination address
3. Source and Destination address
4. Source or Destination address

12. Bridge works in which layer of the OSI model?

1. Appliation layer
2. Transport layer
3. Network layer
4. Datalink layer

13. ………………….. provides a connection-oriented reliable service for sending messages

1. TCP
2. IP
3. UDP
4. All of the above

14. Which layers of the OSI model are host-to-host layers?

1. Transport, Session, Persentation, Application
2. Network, Transport, Session, Presentation
3. Datalink, Network, Transport, Session
4. Physical, Datalink, Network, Transport

15. Which of the following IP address class is Multicast

1. Class A
2. Class B
3. Class C
4. Class D

16. Which of the following is correct regarding Class B Address of IP address

1. Network bit – 14, Host bit – 16
2. Network bit – 16, Host bit – 14
3. Network bit – 18, Host bit – 16
4. Network bit – 12, Host bit – 14

17. The last address of IP address represents

1. Unicast address
2. Network address
3. Broadcast address
4. None of above

18. How many bits are there in the Ethernet address?

1. 64 bits
2. 48 bits
3. 32 bits
4. 16 bits

19. How many layers are in the TCP/IP model?

1. 4 layers
2. 5 layers
3. 6 layers
4. 7 layers

20. Which of the following layer of OSI model also called end-to-end layer?

1. Presentation layer
2. Network layer
3. Session layer
4. Transport layer

21. Why IP Protocol is considered as unreliable?

1. A packet may be lost
2. Packets may arrive out of order
3. Duplicate packets may be generated
4. All of the above

22. What is the minimum header size of an IP packet?

1. 16 bytes
2. 10 bytes
3. 20 bytes
4. 32 bytes

23. Which of following provides reliable communication?

1. TCP
2. IP
3. UDP
4. All of the above

24. What is the address size of IPv6 ?

1. 32 bit
2. 64 bit
3. 128 bit
4. 256 bit