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?

Distortion

Noise

Attenuation

Cross talk

Question 1 of 10

Question 2 of 10

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

Dial-up modem

Router

Access point

Switch

Question 2 of 10

Question 3 of 10

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

Telephone line

Coaxial cable

Twisted pair cable

Fibre optic cable

Question 3 of 10

Question 4 of 10

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

Switch

Access point

Router

Dial-up modem

Question 4 of 10

Question 5 of 10

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

Satellite transmission

Asynchronous transmission

Synchronous transmission

Microwave transmission

Question 5 of 10

Question 6 of 10

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

Access point

Dial-up modem

Router

Switch

Question 6 of 10

Question 7 of 10

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

Distortion

Attenuation

Noise

Cross talk

Question 7 of 10

Question 8 of 10

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

Microwave

Radio signals

Satellite communication

Infra-red

Question 8 of 10

Question 9 of 10

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

Bandwidth

Baud rate

Signal strength

Data rate

Question 9 of 10

Question 10 of 10

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

Synchronous transmission

Asynchronous transmission

Microwave transmission

Satellite transmission

Question 10 of 10

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