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Computer Networks MCQs

998+ questions with answers

1

The IETF standards documents are called ________

a RFC
b RCF
c ID
d DFC
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2

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
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3

The structure or format of data is called ___________

a Syntax
b Semantics
c Struct
d Formatting
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4

Communication between a computer and a keyboard involves ______________ transmission.

a Automatic
b Half-duplex
c Full-duplex
d Simplex
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5

The first Network was called ________

a CNNET
b NSFNET
c ASAPNET
d ARPANET
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6

A _______ is the physical path over which a message travels.

a Path
b Medium
c Protocol
d Route
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7

Which of this is not a network edge device?

a PC
b Smartphones
c Servers
d Switch
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8

A _________ set of rules that governs data communication.

a Protocols
b Standards
c RFCs
d Servers
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9

Three or more devices share a link in ________ connection.

a Unipoint
b Multipoint
c Point to point
d Simplex
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10

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

a computer network
b distributed system
c networking system
d mail system
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11

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 a process is active and another is inactive
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12

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
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13

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
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14

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

a broadcast network
b unicast network
c multicast network
d anycast network
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15

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 hub
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16

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
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17

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
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18

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

a local area network
b virtual private network
c enterprise private network
d storage area network
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19

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
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20

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
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21

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
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22

Which of the following terms is not associated with DSL?

a DSLAM
b CO
c Splitter
d CMTS
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23

HFC contains _______

a Fibre cable
b Coaxial cable
c A combination of Fibre cable and Coaxial cable
d Twisted Pair Cable
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24

Among the optical-distribution architectures that are essentially switched ethernet is __________

a AON
b PON
c NON
d MON
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25

StarBand provides __________

a FTTH internet access
b Cable access
c Telephone access
d Satellite access
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26

Home Internet Access is provided by __________

a DSL
b FTTP
c Cable
d All of the mentioned
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27

ONT is connected to splitter using _________

a High speed fibre cable
b HFC
c Optical cable
d Twisted pair cable
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28

Which of the following factors affect transmission rate in DSL?

a The gauge of the twisted-pair line
b Degree of electrical interfernece
c Shadow fading
d The gauge of the twisted-pair line and degree of electrical interference
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29

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

a 5
b 7
c 6
d 10
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30

The number of layers in ISO OSI reference model is __________

a 5
b 7
c 6
d 10
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31

Which of the following layers is an addition to OSI model when compared with TCP IP model?

a Application layer
b Presentation layer
c Session layer
d Session and Presentation layer
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32

Application layer is implemented in ____________

a End system
b NIC
c Ethernet
d Packet transport
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33

Transport layer is implemented in ______________

a End system
b NIC
c Ethernet
d Signal transmission
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34

Delimiting and synchronization of data exchange is provided by __________

a Application layer
b Session layer
c Transport layer
d Link layer
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35

In OSI model, 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
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36

In TCP IP Model, 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
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37

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

a Added
b Removed
c Rearranged
d Randomized
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38

OSI stands for __________

a open system interconnection
b operating system interface
c optical service implementation
d open service Internet
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39

The number of layers in ISO OSI reference model is __________

a 4
b 5
c 6
d 7
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40

TCP/IP model does not have ______ layer but OSI model have this layer.

a session layer
b transport layer
c application layer
d network layer
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41

Which layer is used to link the network support layers and user support layers?

a session layer
b data link layer
c transport layer
d network layer
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42

Which address is used on the internet for employing the TCP/IP protocols?

a physical address and logical address
b port address
c specific address
d all of the mentioned
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43

Which layer is responsible for process to process delivery in a general network model?

a network layer
b transport layer
c session layer
d data link layer
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44

Which address is used to identify a process on a host by the transport layer?

a physical address
b logical address
c port address
d specific address
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45

Which layer provides the services to user?

a application layer
b session layer
c presentation layer
d physical layer
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46

Transmission data rate is decided by ____________

a network layer
b physical layer
c data link layer
d transport layer
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47

The physical layer is concerned with ___________

a bit-by-bit delivery
b process to process delivery
c application to application delivery
d port to port delivery
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48

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

a coaxial cable
b twisted pair cable
c optical fiber
d electrical cable
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49

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
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50

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 physical transport sublayer
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