In a simple echo-request message, the value of the sum is 01010000 01011100. Then, value of checksum is ___________
A. 10101111 10100011
B. 01010000 01011100
C. 10101111 01011100
D. 01010000 10100011
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In windows ____________ can be used to trace the route of the packet from the source to the destination.
A. Traceroute
B. Tracert
C. Ping
D. Locater
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During debugging, we can use the ____________ program to find if a host is alive and responding.
A. Traceroute
B. Shell
C. Ping
D. Java
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Two machines can use the timestamp request and timestamp replay messages to determine the ___________ needed for an IP datagram to travel between them.
A. Half-trip time
B. Round-trip time
C. Travel time for the next router
D. Time to reach the destination/source
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In case of time exceeded error, when the datagram visits a router, the value of time to live field is _________
A. Remains constant
B. Decremented by 2
C. Incremented by 1
D. Decremented by 1
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The source-quench message in ICMP was designed to add a kind of ____________ to the IP.
A. Error control
B. Flow control
C. Router control
D. Switch control
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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.
A. Destination unreachable
B. Source quench
C. Router error
D. Time exceeded
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ICMP error message will not be generated for a datagram having a special address such as _______
A. 127.0.0.0
B. 12.1.2
C. 11.1
D. 127
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Which of these is not a type of error-reporting message?
A. Destination unreachable
B. Source quench
C. Router error
D. Time exceeded
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During error reporting, ICMP always reports error messages to ________
A. Destination
B. Source
C. Next router
D. Previous router
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Word of the Day
27 Aug
Grievous
(of something bad) very severe or serious.
خطرناک ، تشویشناک، سنگین

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