168
78.4k

980+ Computer Networks Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) , Electrical Engineering , Bachelor of Science in Computer Science TY (BSc CS) , Bachelor of Science in Information Technology FY (BSc IT) , Bachelor of Science in Information Technology SY (BSc IT) .

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
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
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
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
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
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
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
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
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
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
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
12.

The OSI model has ___ layers.

A. 4
B. 5
C. 6
D. 7
Answer» D. 7
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)
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
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
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
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
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
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
20.

Transmission data rate is decided by

A. network layer
B. physical layer
C. data link layer
D. transport layer
Answer» B. physical layer
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
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
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
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
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)
26.

The physical layer is responsible for

A. line coding
B. channel coding
C. modulation
D. all of the mentioned
Answer» D. all of the mentioned
27.

The physical layer translates logical communication requests from the ______ into hardware specific operations.

A. data link layer
B. network layer
C. trasnport layer
D. application layer
Answer» A. data link layer
28.

A single channel is shared by multiple signals by

A. analog modulation
B. digital modulation
C. multiplexing
D. none of the mentioned
Answer» C. multiplexing
29.

Wireless transmission can be done via

A. radio waves
B. microwaves
C. infrared
D. all of the mentioned
Answer» D. all of the mentioned
30.

The data link layer takes the packets from _____ and encapsulates them into frames for transmission.

A. network layer
B. physical layer
C. transport layer
D. application layer
Answer» A. network layer
31.

Which one of the following task is not done by data link layer?

A. framing
B. error control
C. flow control
D. channel coding
Answer» D. channel coding
32.

Which sublayer of the data link layer performs data link functions that depend upon the type of medium?

A. logical link control sublayer
B. media access control sublayer
C. network interface control sublayer
D. none of the mentioned
Answer» B. media access control sublayer
33.

Header of a frame generally contains

A. synchronization bytes
B. addresses
C. frame identifier
D. all of the mentioned
Answer» D. all of the mentioned
34.

Automatic repeat request error management mechanism is provided by

A. logical link control sublayer
B. media access control sublayer
C. network interface control sublayer
D. none of the mentioned
Answer» A. logical link control sublayer
35.

When 2 or more bits in a data unit has been changed during the transmission, the error is called

A. random error
B. burst error
C. inverted error
D. none of the mentioned
Answer» B. burst error
36.

CRC stands for

A. cyclic redundancy check
B. code repeat check
C. code redundancy check
D. cyclic repeat check
Answer» A. cyclic redundancy check
37.

Which one of the following is a data link protocol?

A. ethernet
B. point to point protocol
C. hdlc
D. all of the mentioned
Answer» D. all of the mentioned
38.

Which one of the following is the multiple access protocol for channel access control?

A. csma/cd
B. csma/ca
C. both (a) and (b)
D. none of the mentioned
Answer» C. both (a) and (b)
39.

The technique of temporarily delaying outgoing outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called

A. piggybacking
B. cyclic redundancy check
C. fletcher’s checksum
D. none of the mentioned
Answer» A. piggybacking
40.

The network layer concerns with

A. bits
B. frames
C. packets
D. none of the mentioned
Answer» C. packets
41.

Which one of the following is not a function of network layer?

A. routing
B. inter-networking
C. congestion control
D. none of the mentioned
Answer» D. none of the mentioned
42.

The 4 byte IP address consists of

A. network address
B. host address
C. both (a) and (b)
D. none of the mentioned
Answer» C. both (a) and (b)
43.

In virtual circuit network each packet contains

A. full source and destination address
B. a short vc number
C. both (a) and (b)
D. none of the mentioned
Answer» B. a short vc number
44.

Which one of the following routing algorithm can be used for network layer design?

A. shortest path algorithm
B. distance vector routing
C. link state routing
D. all of the mentioned
Answer» D. all of the mentioned
45.

Multidestination routing

A. is same as broadcast routing
B. contains the list of all destinations
C. data is not sent by packets
D. none of the mentioned
Answer» C. data is not sent by packets
46.

A subset of a network that includes all the routers but contains no loops is called

A. spanning tree
B. spider structure
C. spider tree
D. none of the mentioned
Answer» A. spanning tree
47.

Which one of the following algorithm is not used for congestion control?

A. traffic aware routing
B. admission control
C. load shedding
D. none of the mentioned
Answer» D. none of the mentioned
48.

The network layer protocol of internet is

A. ethernet
B. internet protocol
C. hypertext transfer protocol
D. none of the mentioned
Answer» B. internet protocol
49.

ICMP is primarily used for

A. error and diagnostic functions
B. addressing
C. forwarding
D. none of the mentioned
Answer» A. error and diagnostic functions
50.

Transport layer aggregates data from different applications into a single stream before passing it to

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

Done Studing? Take A Test.

Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.