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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) .

251.

The data bit to be transmitted are broken into discrete __________ at the data link layer.

A. frame
B. stuff
C. character
D. data
Answer» A. frame
252.

A standard mechanism provided by internet which helps in copying a file from one host to another is known as ________.

A. smtp
B. dns server
C. telnet
D. ftp
Answer» D. ftp
253.

Which one of the below is not an component of Internet mail system

A. user agent
B. smtp sender
C. smtp receiver
D. transfer agent
Answer» D. transfer agent
254.

How many layers are present in the Internet protocol stack (TCP/IP model)?

A. 5
B. 7
C. 6
D. 10
Answer» A. 5
255.

Application layer is implemented in ____________

A. end system
B. nic
C. ethernet
D. packet transport
Answer» A. end system
256.

Transport layer is implemented in ______________

A. end system
B. nic
C. ethernet
D. signal transmission
Answer» A. end system
257.

The functionalities of the presentation layer include ____________

A. data compression
B. data encryption
C. data description
D. all of the mentioned
Answer» D. all of the mentioned
258.

Delimiting and synchronization of data exchange is provided by __________

A. application layer
B. session layer
C. transport layer
D. link layer
Answer» B. session layer
259.

Physical or logical arrangement of network is __________

A. topology
B. routing
C. networking
D. control
Answer» A. topology
260.

Which network topology requires a central controller or hub?

A. star
B. mesh
C. ring
D. bus
Answer» A. star
261.

Data communication system spanning states, countries, or the whole world is ________

A. lan
B. wan
C. man
D. pan
Answer» B. wan
262.

Data communication system within a building or campus is________

A. lan
B. wan
C. man
D. pan
Answer» A. lan
263.

Which of this is not a guided media?

A. fiber optical cable
B. coaxial cable
C. wireless lan
D. copper wire
Answer» C. wireless lan
264.

Coaxial cable consists of _______ concentric copper conductors.

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
265.

Fiber optics posses following properties __________

A. immune electromagnetic interference
B. very less signal attenuation
C. very hard to tap
D. all of the mentioned
Answer» D. all of the mentioned
266.

If an Optical Carrier is represented as OC-n, generally the link speed equals(in Mbps) __________

A. n*39.8
B. n*51.8
C. 2n*51.8
D. none of the mentioned
Answer» B. n*51.8
267.

Radio channels are attractive medium because __________

A. can penetrate walls
B. connectivity can be given to mobile user
C. can carry signals for long distance
D. all of the mentioned
Answer» D. all of the mentioned
268.

Geostationary satellites ___________

A. are placed at a fixed point above the earth
B. rotate the earth about a fixed axis
C. rotate the earth about a varying axis
D. all of the mentioned
Answer» A. are placed at a fixed point above the earth
269.

Bits can be sent 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
270.

The 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
271.

In asynchronous serial communication the physical layer provides ___________

A. start and stop signalling
B. flow control
C. both start & stop signalling and flow control
D. only start signalling
Answer» C. both start & stop signalling and flow control
272.

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
273.

Wireless transmission of signals can be done via ___________

A. radio waves
B. microwaves
C. infrared
D. all of the mentioned
Answer» D. all of the mentioned
274.

Transmission control protocol ___________

A. is a connection-oriented protocol
B. uses a three way handshake to establish a connection
C. receives data from application as a single stream
D. all of the mentioned
Answer» D. all of the mentioned
275.

Datagram networks mainly refers to _________

A. connection oriented networks
B. connection less networks
C. telephone networks
D. internetwork
Answer» B. connection less networks
276.

The network layer is concerned with __________ of data.

A. bits
B. frames
C. packets
D. bytes
Answer» C. packets
277.

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

A. routing
B. inter-networking
C. congestion control
D. error control
Answer» D. error control
278.

In virtual circuit network each packet contains ___________

A. full source and destination address
B. a short vc number
C. only source address
D. only destination address
Answer» B. a short vc number
279.

Which of the following routing algorithms 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
280.

Which of the following is not correct in relation to multi-destination routing?

A. is same as broadcast routing
B. contains the list of all destinations
C. data is not sent by packets
D. there are multiple receivers
Answer» C. data is not sent by packets
281.

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. special tree
Answer» A. spanning tree
282.

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

A. traffic aware routing
B. admission control
C. load shedding
D. routing information protocol
Answer» D. routing information protocol
283.

The network layer protocol for internet is __________

A. ethernet
B. internet protocol
C. hypertext transfer protocol
D. file transfer protocol
Answer» B. internet protocol
284.

ICMP is primarily used for __________

A. error and diagnostic functions
B. addressing
C. forwarding
D. routing
Answer» A. error and diagnostic functions
285.

Which of the following are transport layer protocols used in networking?

A. tcp and ftp
B. udp and http
C. tcp and udp
D. http and ftp
Answer» C. tcp and udp
286.

Which one of the following is a version of UDP with congestion control?

A. datagram congestion control protocol
B. stream control transmission protocol
C. structured stream transport
D. user congestion control protocol
Answer» A. datagram congestion control protocol
287.

A _____ is a TCP name for a transport service access point.

A. port
B. pipe
C. node
D. protocol
Answer» A. port
288.

Transport layer protocols deals with ____________

A. application to application communication
B. process to process communication
C. node to node communication
D. man to man communication
Answer» B. process to process communication
289.

Which of the following is a transport layer protocol?

A. stream control transmission protocol
B. internet control message protocol
C. neighbor discovery protocol
D. dynamic host configuration protocol
Answer» A. stream control transmission protocol
290.

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

A. prior network
B. chief network
C. prime network
D. overlay network
Answer» D. overlay network
291.

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
292.

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

A. broadcast network
B. unicast network
C. multicast network
D. anycast network
Answer» A. broadcast network
293.

Bluetooth is an example of __________

A. personal area network
B. local area network
C. virtual private network
D. wide area network
Answer» A. personal area network
294.

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

A. protocol architecture
B. protocol stack
C. protocol suite
D. protocol system
Answer» B. protocol stack
295.

Network congestion occurs _________

A. in case of traffic overloading
B. when a system terminates
C. when connection between two nodes terminates
D. in case of transfer failure
Answer» A. in case of traffic overloading
296.

Which of this is not a constituent of residential telephone line?

A. a high-speed downstream channel
B. a medium-speed downstream channel
C. a low-speed downstream channel
D. an ultra-high speed downstream channel
Answer» C. a low-speed downstream channel
297.

DSL telcos provide which of the following services?

A. wired phone access
B. isp
C. wired phone access and isp
D. network routing and isp
Answer» C. wired phone access and isp
298.

The function of DSLAM is to __________

A. convert analog signals into digital signals
B. convert digital signals into analog signals
C. amplify digital signals
D. de-amplify digital signals
Answer» A. convert analog signals into digital signals
299.

Which of the following terms is not associated with DSL?

A. dslam
B. co
C. splitter
D. cmts
Answer» D. cmts
300.

HFC contains _______

A. fibre cable
B. coaxial cable
C. a combination of fibre cable and coaxial cable
D. twisted pair cable
Answer» C. a combination of fibre cable and coaxial cable

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