Solved MCQ on Network Layer in Computer Networks set-1

1. The ........ layer links the network support layers and the user support layers.

A. transport

B. network

C. data link

D. session

2) The ............. layer changes bits into electromagnetic signals.

A. physical

B. data link

C. transport

D. network

3) The .......... layer coordinates the functions required to transmit a bit stream over a physical medium.

A. transport

B. network

C. data link

D. physical

4) Which of the following is an application layer service?

A. remote log-in.

B. file transfer and access.

C. mail service

D. all of the above

5) The ......... layer is responsible for the source-to-destination delivery of a packet across multiple network links.

A. transport

B. network

C. data link

D. session

6) The .......... layer is the layer closest to the transmission medium.

A. physical

B. data link

C. network

D. transport

7) The ...........layer is responsible for the process-to-process delivery of th entire message.

A. transport

B. network

C. data link

D. physical

8) Mail services are available to network users through the .......... layer.

A. data link

B. physical

C. transport

D. application

9) The ........... layer establishes, maintains, and synchronizes the interactions between communicating devices.

A. transport

B. network

C. session

D. physical

10) The .......... layer lies between the network layer and the application layer.

A. physical

B. data link

C. transport

D. session

11) The .......... layer ensures interoperability between communicating devices through transformation of data into a mutually agreed upon format.

A. transport

B. network

C. data link

D. presentation

12) Transmission media lies below the .........layer.

A. physical

B. network

C. transport

D. application

13) The ........... layer enables the users to access the network.

A. session

B. application

C. data link

D. physical

14) Circuit switching takes place at the .......... layer.

A. data link

B. physical

C. network

D. transport

15) The ............ layer is responsible for moving frames form one node to the next.

A. physical

B. data link

C. transport

D. session

16) The routing processor of a router performs the ........ layer functions of the router.

A. physical and data link

B. network

C. transport

D. session

17) The ............. layer adds a header to the packet coming from the upper layer that includes the logical address of the sender and receiver.

A. physical

B. data link

C. network

D. transport

18) Network layer lies on .......... layer.

A. physical

B. data link

C. network

D. transport

19) The ...........layer is responsible for the delivery of a message from one process to another.

A. physical

B. transport

C. network

D. session

20) The data link layer takes the packet it gets from the network layer and encapsulates them into ......

A. cells

B. frames

C. packet

D. trailer

Answers:

1) A. transport

2) A. physical

3) D. physical

4) D. all of the above

5) B. network

6) A. physical

7) A. transport

8) D. application

9) C. session

10) C. transport

11) D. presentation

12) A. physical

13) B. application

14) B. physical

15) B. data link

16) B. network

17) C. network

18) A. physical

19) B. transport

20) B. frames

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