OSI Reference Model

Computer Networks Questions & Answers – Reference Models  OSI Ref Model– 1

This set of Computer Networks Multiple Choice Questions & Answers (MCQs) focuses on “Reference Models – 1 OSI Ref Model”.

1. The number of layers in Internet protocol stack
a) 5
b) 7
c) 6
d) None of the mentioned
View Answer

Answer: a
Explanation: None.

2. The number of layers in ISO OSI reference model
a) 5
b) 7
c) 6
d) None of the mentioned

Answer: b
Explanation: None.

3. This layer in an addition to OSI model
a) Application layer
b) Presentation layer
c) Session layer
d) Both b and c

Answer: d
Explanation: None.

4. Application layer is implemented in
a) End system
b) NIC
c) Ethernet
d) None of the mentioned

Answer: a
Explanation: None.

4. Transport layer is implemented in
a) End system
b) NIC
c) Ethernet
d) None of the mentioned

Answer: a
Explanation: None.

5. The functionalities of presentation layer includes
a) Data compression
b) Data encryption
c) Data description
d) All of the mentioned

Answer: d
Explanation: None.

6. Delimiting and synchronization of data exchange is provided by
a) Application layer
b) Session layer
c) Transport layer
d) Link layer

Answer: b
Explanation: None.

7. In OSI model, when data is sent from device A to device B, the 5th layer to recieve data at B is
a) Application layer
b) Transport layer
c) Link layer
d) Session layer

Answer: d
Explanation: None.

8. In Internet protocol stack, when data is sent from device A to device B, the 5th layer to receive data at B is
a) Application layer
b) Transport layer
c) Link layer
d) Session layer

Answer: a
Explanation: None.

9. In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______
a) Added
b) Removed
c) Rearranged
d) None of the mentioned

Answer: b
Explanation: None.

10. Identify the statement which cannot be associated with OSI model
a) A structured way to discuss and easier update syatem components
b) One layer may duplicate lower layer functionality
c) Functionality at one layer no way requires information from another layer
d) None of the mentioned

Answer: c

Explanation: One layer may use the information from another layer Ex: time stamp value.