Computer Networks Solved MCQs

Computer Network MCQS

Computer Networks Solved MCQs for Computer Instructor B-17 | AJKPSC, FPSC, KPSC and PPSC

1 / 20

1. Which of the following does not represent a function of the network layer?

a. Congestion control

b. routing

c. Error control

d. inter-network communication

2 / 20

2. The IP header size is ………..

a. 60 bytes

b. Depends upon the MDU

c. 20 bytes

d. 20 to 60 bytes long

3 / 20

3. What type of transmission occurs in communication between a computer and a keyboard?

a. Automatic

b. Simplex

c. Half-duplex

d. Full-duplex

4 / 20

4. In a frequency-domain plot, the horizontal axis measures the….

a. phase

b. peak amplitude

c. frequency

d. slope

5 / 20

5. Which organization has authority over interstate and international commerce in the communications field?

a. FCC

b. ITU-T

c. ISOC

d. IEEE

6 / 20

6. Which networking topology requires a central controller or hub?

a. Ring

b. Bus

c. Star

d. Mesh

7 / 20

7. Parity Bits are used for which of the following purposes?

a. To detect errors

b. To transmit faster

c. Encryption of data

d. To identify the user

8 / 20

8. Firewalls are frequently set up to block

a. Sensitive traffic

b. TCP traffic

c. UDP traffic

d. Sensitive traffic

9 / 20

9. Which of the following enables users on a LAN to share computer programs and data?

a. File server

b. Network

c. Communication server

d. All

10 / 20

10. Which of the following cannot be used as a transmission medium for 802.3 Ethernet?

a. Fiber optic cable

b. Microwave link

c. Twisted pair cable

d. Thin coaxial cable

11 / 20

11. The term ……… describes the position of the waveform relative to time 0.

a. Phase Shift

b. Phase

c. Frequency

d. Time period

12 / 20

12. Transmission data rate is decided by

a. transport layer

b. physical layer

c. network layer

d. data link layer

13 / 20

13. Which of the following is best network topology for large businesses?

a. Hierarchical

b. Star

c. Local area

d. Ring

14 / 20

14. The IP network 192.168.50.0 is to be divided into 10 equal-sized subnets. Which of the following subnet masks can be used for this requirement?

a. 255.255.255.240

b. 255.243.240

c. 255.255.0.0

d. 255.255.0

15 / 20

15. A proxy server is used as the computer?

a. acting as a backup

b. performing file handling

c. accessing user permissions

d. with external access

16 / 20

16. Which of this is not a network edge device?

a. Smartphones

b. Switch

c. PC

d. Servers

17 / 20

17. Which of these is a standard interface for serial data transmission?

a. Centronics

b. RS232C

c. ASCII

d. Text

18 / 20

18. Which multiplexing technique shifts each signal to a different carrier frequency.

a. Both FDM & TDM

b. FDM

c. TDM

d. PDM

19 / 20

19. What is the maximum efficiency of Slotted ALOHA when G = 1?

a. 35.8%

b. 36.8%

c. 37.8%

d. 35.5%

20 / 20

20. Complex networks today are made up of hundreds and sometimes thousands of

a. Servers

b. Documents

c. Entities

d. Components

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Computer Networks Solved MCQs

Computer Networks Solved MCQs for Computer Instructor B-17 | AJKPSC & PPSC Exam Practice

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