Computer Networks Solved MCQs

Computer Network MCQS

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

1 / 20

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

a. Phase

b. Time period

c. Phase Shift

d. Frequency

2 / 20

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

a. To transmit faster

b. To detect errors

c. To identify the user

d. Encryption of data

3 / 20

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

a. 35.8%

b. 37.8%

c. 36.8%

d. 35.5%

4 / 20

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

a. Half-duplex

b. Simplex

c. Automatic

d. Full-duplex

5 / 20

5. The IP header size is ………..

a. 20 bytes

b. 60 bytes

c. 20 to 60 bytes long

d. Depends upon the MDU

6 / 20

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

a. IEEE

b. ISOC

c. ITU-T

d. FCC

7 / 20

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

a. FDM

b. TDM

c. Both FDM & TDM

d. PDM

8 / 20

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

a. Star

b. Hierarchical

c. Ring

d. Local area

9 / 20

9. Transmission data rate is decided by

a. transport layer

b. physical layer

c. data link layer

d. network layer

10 / 20

10. Firewalls are frequently set up to block

a. TCP traffic

b. Sensitive traffic

c. UDP traffic

d. Sensitive traffic

11 / 20

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

a. Components

b. Servers

c. Entities

d. Documents

12 / 20

12. A proxy server is used as the computer?

a. acting as a backup

b. accessing user permissions

c. performing file handling

d. with external access

13 / 20

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

a. PC

b. Switch

c. Servers

d. Smartphones

14 / 20

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

a. Ring

b. Bus

c. Mesh

d. Star

15 / 20

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

a. RS232C

b. ASCII

c. Text

d. Centronics

16 / 20

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

a. inter-network communication

b. Error control

c. routing

d. Congestion control

17 / 20

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

a. peak amplitude

b. frequency

c. phase

d. slope

18 / 20

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

a. Thin coaxial cable

b. Fiber optic cable

c. Twisted pair cable

d. Microwave link

19 / 20

19. 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. 255.255.0

b. 255.255.255.240

c. 255.255.0.0

d. 255.243.240

20 / 20

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

a. File server

b. Communication server

c. Network

d. All

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The average score is 53%

Computer Networks Solved MCQs

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

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