Reference Models Computer Networks

1.

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: Option 'D'

both (a) and (b)

2.

Application layer is implemented in

   A.) End system
   B.) NIC
   C.) Ethernet
   D.) None of these

Answer: Option 'A'

End system

3.

Transmission data rate is decided by

   A.) network layer
   B.) physical layer
   C.) data link layer
   D.) transport layer

Answer: Option 'B'

physical layer

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: Option 'C'

transport layer

5.

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: Option 'A'

Application layer

6.

The number of layers in Internet protocol stack

   A.) 5
   B.) 7
   C.) 6
   D.) 8

Answer: Option 'A'

5

7.

The number of layers in ISO OSI reference model

   A.) 5
   B.) 7
   C.) 6
   D.) 8

Answer: Option 'B'

7

8.

The functionalities of presentation layer includes

   A.) Data compression
   B.) Data encryption
   C.) Data description
   D.) All of these

Answer: Option 'D'

All of these

9.

In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______

   A.) Added
   B.) Rearranged
   C.) Removed
   D.) None of these

Answer: Option 'C'

Removed

10.

TCP/IP model was developed _____ the OSI model.

   A.) prior to
   B.) after
   C.) simultaneous to
   D.) none of these

Answer: Option 'A'

prior to

11.

Which layer is responsible for process to process delivery?

   A.) network layer
   B.) transport layer
   C.) data link layer
   D.) session layer

Answer: Option 'B'

transport layer

12.

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 these

Answer: Option 'C'

Functionality at one layer no way requires information from another layer

13.

OSI stands for

   A.) open system interconnection
   B.) operating system interface
   C.) the optical service implementation
   D.) none of these

Answer: Option 'A'

open system interconnection

15.

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: Option 'D'

Session layer

16.

Delimiting and synchronization of data exchange is provided by

   A.) Application layer
   B.) Session layer
   C.) Transport layer
   D.) Link layer

Answer: Option 'B'

Session layer

17.

The OSI model has ___ layers.

   A.) 4
   B.) 5
   C.) 6
   D.) 7

Answer: Option 'D'

7

18.

Which address is used in an internet employing the TCP/IP protocols?

   A.) physical address and logical address
   B.) port address
   C.) specific address
   D.) all of these

Answer: Option 'D'

all of these

19.

Which address identifies a process on a host?

   A.) specific address
   B.) port address
   C.) physical address
   D.) logical address

Answer: Option 'B'

port address

20.

This layer in an addition to OSI model

   A.) Application layer
   B.) Presentation layer
   C.) Session layer
   D.) Both b and c

Answer: Option 'D'

Both b and c


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