Computer Networks Solved MCQs

Computer Network MCQS

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

1 / 20

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

a. slope

b. phase

c. peak amplitude

d. frequency

2 / 20

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

a. Fiber optic cable

b. Twisted pair cable

c. Thin coaxial cable

d. Microwave link

3 / 20

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

a. Switch

b. PC

c. Smartphones

d. Servers

4 / 20

4. The IP header size is ………..

a. 20 bytes

b. 60 bytes

c. Depends upon the MDU

d. 20 to 60 bytes long

5 / 20

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

a. To detect errors

b. Encryption of data

c. To identify the user

d. To transmit faster

6 / 20

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

a. Ring

b. Local area

c. Star

d. Hierarchical

7 / 20

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

a. IEEE

b. FCC

c. ITU-T

d. ISOC

8 / 20

8. Firewalls are frequently set up to block

a. Sensitive traffic

b. Sensitive traffic

c. TCP traffic

d. UDP traffic

9 / 20

9. Transmission data rate is decided by

a. data link layer

b. physical layer

c. network layer

d. transport layer

10 / 20

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

a. Time period

b. Phase Shift

c. Phase

d. Frequency

11 / 20

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

a. Bus

b. Mesh

c. Star

d. Ring

12 / 20

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

a. Half-duplex

b. Full-duplex

c. Simplex

d. Automatic

13 / 20

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

a. PDM

b. Both FDM & TDM

c. FDM

d. TDM

14 / 20

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

a. RS232C

b. ASCII

c. Centronics

d. Text

15 / 20

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

a. routing

b. inter-network communication

c. Error control

d. Congestion control

16 / 20

16. 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. 255.255.0.0

b. 255.255.0

c. 255.255.255.240

d. 255.243.240

17 / 20

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

a. 37.8%

b. 36.8%

c. 35.8%

d. 35.5%

18 / 20

18. A proxy server is used as the computer?

a. with external access

b. performing file handling

c. acting as a backup

d. accessing user permissions

19 / 20

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

a. Documents

b. Servers

c. Entities

d. Components

20 / 20

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

a. File server

b. All

c. Network

d. Communication server

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The average score is 51%

Computer Networks Solved MCQs

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

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