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

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Question 1 of 10

Computer Science

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

Satellite transmission

Asynchronous transmission

Microwave transmission

Synchronous transmission

Question 1 of 10

Question 2 of 10

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

Satellite communication

Infra-red

Radio signals

Microwave

Question 2 of 10

Question 3 of 10

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

Noise

Attenuation

Distortion

Cross talk

Question 3 of 10

Question 4 of 10

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

Router

Switch

Dial-up modem

Access point

Question 4 of 10

Question 5 of 10

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

Router

Access point

Switch

Dial-up modem

Question 5 of 10

Question 6 of 10

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

Twisted pair cable

Fibre optic cable

Coaxial cable

Telephone line

Question 6 of 10

Question 7 of 10

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

Cross talk

Attenuation

Noise

Distortion

Question 7 of 10

Question 8 of 10

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

Bandwidth

Baud rate

Signal strength

Data rate

Question 8 of 10

Question 9 of 10

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

Dial-up modem

Router

Switch

Access point

Question 9 of 10

Question 10 of 10

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

Asynchronous transmission

Microwave transmission

Synchronous transmission

Satellite transmission

Question 10 of 10

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