| 32. | Consider the following S1 and S2 : S1 : A hard handover is one in which the channel in the source cell is retained and used for a while in parallel with the channel in the target cell. S2 : A soft handover is one in which the channel in the source cell is retained and only then the channel in the target cell is engaged. |
| Discuss |
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Answer: (d).Both S1 and S2 are not true
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| 33. | How many distinct stages are there in DES algorithm, which is parameterized by a 56-bit key? |
| Discuss |
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Answer: (a).16
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| 34. | Which of the following algorithms is not a broadcast routing algorithm? |
| Discuss |
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Answer: (c).Reverse path forwarding
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| 35. | The period of a signal is 10 ms. What is its frequency in Hertz? |
| Discuss |
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Answer: (b).100
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| 36. | For n devices in a network, ____ , number of duplex-mode links are required, for a mesh topology. |
| Discuss |
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Answer: (c).n(n + 1) /2
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| 37. | How many characters per second (7 bits + 1 parity) can be transmitted over a 3200 bps line if the transfer is asynchronous? (Assuming 1 start bit and 1 stop bit) |
| Discuss |
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Answer: (b).320
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| 38. | Which of the following is not a field in TCP header ? |
| Discuss |
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Answer: (b).Fragment offSet
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| 39. | What is the propagation time if the distance between the two points is 48,900 ? Assume the propagation speed to be 2.4 x 108 meter/second in cable. |
| Discuss |
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Answer: (d).200 ms
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| 40. | _________________ is a bit-oriented protocol for communication over point-to-point and multi-point links . |
| Discuss |
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Answer: (a).Stop-and-wait
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