Draw the IP datagram header format. “IP datagram has a checksum field still it is called an unreliable protocol”. Justify?

2601

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What are the principles that were applied to arrive at the seven layers in OSI model?

3434

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What are the reasons for using layered protocols ?

3677

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Enumerate the main responsibilities of data link layer ?

2017

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Is the nyquist theorem true for optical fibre or only for copper wire ? Explain.

3258

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Why do data link layer protocols position the checksum in the trailer and not in the header ?

2427

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Compare the maximum window size in go-back-N and selective-repeat ARQs.

2302

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Why does ATM use the cell of small and fixed length ?

2656

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Give the equivalent binary word for the polynomial x8+x2+x+1.

1700

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In which of the 7 layers of OSI will a service handling conversion of characters is from EBCDIC to ASCII be normally implemented ?

1650

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Convert the IP address 197.228.17.56 into binary ?

4076

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Compare satellite with fiber as a communication medium and enumerate the application areas where satellite still holds a niche(or special)marker.

1816

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A binary signal is sent over a 3-khz channel whose signal-to-noise ratio is 20 db.Calculate the maximum achievable data rate ?

2914

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What does ‘data transparency’ mean ? With the help of a flow chart, explain the process of bit de-stuffing at the receiver’s end.

1780

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Explain The ATM reference model

1841

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