Which of the following is not a field in TCP header ?
| A. | Sequence number |
| B. | Fragment offSet |
| C. | Checksum |
| D. | Window size |
|
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| A. | 0.5 ms |
| B. | 20 ms |
| C. | 50 ms |
| D. | 200 ms |
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Option: D Explanation : Click on Discuss to view users comments. pankaj said: (9:01pm on Saturday 20th June 2015)
Distance=48000Propagation speed=2.4*10^8 metre/secondPropagation time=distance/speed=48000/2.4*10^8=2*10^-4sec*10^6=200ms
Kashish said: (12:16am on Thursday 25th June 2015)
please explain the answer. I think it is 0.2 ms which is not an option. Moreover, I had 48,000 distance in my paper.
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----------- is a bit-oriented protocol for communication over point-to-point and multipoint links .
| A. | Stop-and-wait |
| B. | HDLC |
| C. | Sliding window |
| D. | Go-back-N |
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Option: A Explanation : Click on Discuss to view users comments. |
Which one of the following is true for asymmetric-key cryptography?
| A. | Private key is kept by the receiver and public key is announced to the public. |
| B. | Public key is kept by the receiver and private key is announced to the public. |
| C. | Both private key and public key are kept by the receiver. |
| D. | Both private key and public key are announced to the public. |
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Option: A Explanation : Click on Discuss to view users comments. |
