1. The OSI model has ________layers.
a. 4
b. 5
c. 6
d. 7
Answer: (d).7

2. TCP/IP model does not have ______ layer but OSI model have this layer.
a. session layer
b. presentation layer
c. application layer
d. both (a) and (b)
Answer: (d).both (a) and (b)

3. OSI stands for
a. open system interconnection
b. operating system interface
c. optical service implementation
d. none of the mentioned
Answer: (a).open system interconnection

4. Which layer links the network support layers and user support layers
a. session layer
b. data link layer
c. transport layer
d. network layer
Answer: (c).transport layer

5. TCP/IP model was developed _____ the OSI model.
a. prior to
b. after
c. simultaneous to
d. none of the mentioned
Answer: (a).prior to

6. Which layer is responsible for process to process delivery?
a. network layer
b. transport layer
c. session layer
d. data link layer
Answer: (b). transport layer

7. Which layer provides the services to user?
a. application layer
b. session layer
c. presentation layer
d. none of the mentioned
Answer: (a).application layer

8. In the layer hierarchy as the data packet moves from the upper to the lower layers, headers are
a. Added
b. Removed
c. Rearranged
d. Modified
Answer: (a).Added

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

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

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