Computer Networks Solved MCQs

1.

When collection of various computers seems a single coherent system to its client, then it is called

A. computer network
B. distributed system
C. both (a) and (b)
D. none of the mentioned
Answer» B. distributed system
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2.

Two devices are in network if

A. a process in one device is able to exchange information with a process in another device
B. a process is running on both devices
C. pids of the processes running of different devices are same
D. none of the mentioned
Answer» A. a process in one device is able to exchange information with a process in another device
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3.

Which one of the following computer network is built on the top of another network?

A. prior network
B. chief network
C. prime network
D. overlay network
Answer» D. overlay network
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4.

In computer network nodes are

A. the computer that originates the data
B. the computer that routes the data
C. the computer that terminates the data
D. all of the mentioned
Answer» D. all of the mentioned
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5.

Communication channel is shared by all the machines on the network in

A. broadcast network
B. unicast network
C. multicast network
D. none of the mentioned
Answer» A. broadcast network
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6.

Bluetooth is an example of

A. personal area network
B. local area network
C. virtual private network
D. none of the mentioned
Answer» A. personal area network
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7.

A _____ is a device that forwards packets between networks by processing the routing information included in the packet.

A. bridge
B. firewall
C. router
D. all of the mentioned
Answer» C. router
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8.

A list of protocols used by a system, one protocol per layer, is called

A. protocol architecture
B. protocol stack
C. protocol suit
D. none of the mentioned
Answer» B. protocol stack
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9.

Network congestion occurs

A. in case of traffic overloading
B. when a system terminates
C. when connection between two nodes terminates
D. none of the mentioned
Answer» A. in case of traffic overloading
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10.

Which one of the following extends a private network across public networks?

A. local area network
B. virtual private network
C. enterprise private network
D. storage area network
Answer» B. virtual private network
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11.

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
view more info and meaning of OSI external link
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12.

The OSI model has ___ layers.

A. 4
B. 5
C. 6
D. 7
Answer» D. 7
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13.

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)
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14.

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
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15.

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 the mentioned
Answer» D. all of the mentioned
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16.

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
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17.

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
discuss
18.

Which address identifies a process on a host?

A. physical address
B. logical address
C. port address
D. specific address
Answer» C. port address
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19.

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
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20.

Transmission data rate is decided by

A. network layer
B. physical layer
C. data link layer
D. transport layer
Answer» B. physical layer
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21.

Which transmission media has the highest transmission speed in a network?

A. coaxial cable
B. twisted pair cable
C. optical fiber
D. electrical cable
Answer» C. optical fiber
discuss
22.

Bits can be send over guided and unguided media as analog signal by

A. digital modulation
B. amplitude modulation
C. frequency modulation
D. phase modulation
Answer» A. digital modulation
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23.

The portion of physical layer that interfaces with the media access control sublayer is called

A. physical signalling sublayer
B. physical data sublayer
C. physical address sublayer
D. none of the mentioned
Answer» A. physical signalling sublayer
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24.

physical layer provides

A. mechanical specifications of electrical connectors and cables
B. electrical specification of transmission line signal level
C. specification for ir over optical fiber
D. all of the mentioned
Answer» D. all of the mentioned
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25.

In asynchronous serial communication the physical layer provides

A. start and stop signalling
B. flow control
C. both (a) and (b)
D. none of the mentioned
Answer» C. both (a) and (b)
discuss
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