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Q. To turn the tables
Answer : To change the sorry scheme
1. The _______ layer changes bits into electromagnetic signals.

A. Physical

B. Transport

C. Data link

D. None of these

● Topic: Data Communication ● Contributed by: Sadan Malik


2. The _______ layer is the layer closest to the transmission medium.

A. Network

B. Physical

C. Data link

D. Transport

● Topic: Data Communication ● Contributed by: Sadan Malik


3. The Internet model consists of _______ layers.

A. 3

B. 5

C. 7

D. 8

● Topic: Data Communication ● Contributed by: Sadan Malik


4. What is the main function of the transport layer?

A. Process-to-process delivery

B. Node-to-node delivery

C. Synchronization

D. Updating and maintenance of routing tables

● Topic: Data Communication ● Contributed by: Sadan Malik


5. A cable break in a _______ topology stops all transmission.

A. Mesh

B. Star

C. Primary

D. Bus

● Topic: Data Communication ● Contributed by: Sadan Malik


6. A television broadcast is an example of _______ transmission.

A. Half-duplex

B. Full-duplex

C. Simplex

D. Automatic

● Topic: Data Communication ● Contributed by: Sadan Malik


7. An unauthorized user is a network _______ issue.

A. Performance

B. Reliability

C. Security

D. All of the Above

● Topic: Data Communication ● Contributed by: Sadan Malik


8. The information to be communicated in a data communications system is the ________

A. Medium

B. Protocol

C. Transmission

D. Message

● Topic: Data Communication ● Contributed by: Sadan Malik


9. The _______ is the physical path over which a message travels.

A. Protocol

B. Medium

C. Signal

D. All of the above

● Topic: Data Communication ● Contributed by: Sadan Malik


10. Which topology requires a central controller or hub?

A. Star

B. Mesh

C. Bus

D. Ring

● Topic: Data Communication ● Contributed by: Sadan Malik


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