Computer Network Mcqs

Page No. 44

Which layer is responsible for process-to-process delivery?


aPhysical layer

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b Network layer

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cTransport layer

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d Application layer

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View Answer Transport layer

In a simple echo-request message, the value of the sum is 01010000 01011100. Then, value of checksum is ___________


a10101111 10100011

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b01010000 01011100

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c10101111 01011100

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d01010000 10100011

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View Answer 10101111 10100011

In windows ____________ can be used to trace the route of the packet from the source to the destination.


atraceroute

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btracert

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cping

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dlocater

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View Answer tracert

During debugging, we can use the ____________ program to find if a host is alive and responding.


atraceroute

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bshell

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cping

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djava

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View Answer ping

Two machines can use the timestamp request and timestamp replay messages to determine the ___________ needed for an IP datagram to travel between them.


aHalf-trip time

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bRound-trip time

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cTravel time for the next router

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dTime to reach the destination/source

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View Answer Round-trip time

In case of time exceeded error, when the datagram visits a router, the value of time to live field is _________


aRemains constant

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bDecremented by 2

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c Incremented by 1

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d Decremented by 1

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View Answer Decremented by 1

The source-quench message in ICMP was designed to add a kind of ____________ to the IP.


aerror control

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bflow control

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crouter control

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dswitch control

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View Answer flow control

When a router cannot route a datagram or host cannot deliver a datagram, the datagram is discarded and the router or the host sends a ____________ message back to the source host that initiated the datagram.


aDestination unreachable

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b Source quench

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cRouter error

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dTime exceeded

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ICMP error message will not be generated for a datagram having a special address such as _______


a127.0.0.0

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b12.1.2

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c11.1

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d127

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View Answer 127.0.0.0

Which of these is not a type of error-reporting message?


aDestination unreachable

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bSource quench

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cRouter error

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dTime exceeded

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View Answer Router error

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