Computer Science Chapter 4 Data Communication Mcqs Test Online 9th Class Punjab

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Question 1 of 10

Computer Science

1. Which of the following impairment refers to undesired signals that enter the path of the transmitted signal due to electromagnetic radiation?

Attenuation

Cross talk

Noise

Distortion

Question 1 of 10

Question 2 of 10

2. What represents the overall data transmission capacity of a computer network?

Baud rate

Signal strength

Data rate

Bandwidth

Question 2 of 10

Question 3 of 10

3. In which of the following transmission, the time interval between the characters is always the same?

Microwave transmission

Asynchronous transmission

Satellite transmission

Synchronous transmission

Question 3 of 10

Question 4 of 10

4. In which type of data transmission start/stop bits are used?

Microwave transmission

Asynchronous transmission

Satellite transmission

Synchronous transmission

Question 4 of 10

Question 5 of 10

5. Which of the following transmission media uses light waves for transmitting information?

Fibre optic cable

Coaxial cable

Telephone line

Twisted pair cable

Question 5 of 10

Question 6 of 10

6. Which of the following device forwards information from one network to another by selecting the best pathway available?

Router

Access point

Dial-up modem

Switch

Question 6 of 10

Question 7 of 10

7. In which of the following impairment, the strength of signal falls off with distance?

Attenuation

Distortion

Cross talk

Noise

Question 7 of 10

Question 8 of 10

8. Which of the following device is used for connecting computers together in wired local area network?

Dial-up modem

Access point

Switch

Router

Question 8 of 10

Question 9 of 10

9. Which of the following device is used for connecting computers together in wireless local area network?

Switch

Dial-up modem

Access point

Router

Question 9 of 10

Question 10 of 10

10. Which of the following is used for short distance communication?

Satellite communication

Microwave

Infra-red

Radio signals

Question 10 of 10

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