GATE CSE 2007 | GATE CSE Year Wise Previous Years Questions

GATE CSE 2007

MCQ (Single Correct Answer)

-0.6

There are n stations in a slotted LAN. Each station attempts to transmit with a probability p in each time slot. What is the probability that ONLY one station transmits in a given time slot?

np(1 - p)^{n - 1}

(1 - p)^{n - 1}

p(1 - p)^{n - 1}

1 - (1 - p)^{n - 1}

GATE CSE 2007

MCQ (Single Correct Answer)

-0.6

The message 11001001 is to be transmitted using the CRC polynomial x³ + 1 to protect it from errors. The message that should be transmitted is:

11001001000

11001001011

11001010

110010010011

GATE CSE 2007

MCQ (Single Correct Answer)

-0.6

The distance between two stations M and N is L kilometers. All frames are K bits long. The propagation delay per kilometer is t seconds. Let R bits/second be the channel capacity. Assuming that processing delay is negligible, the minimum number of bits for the sequence number field in a frame for maximum utilization, when the sliding window protocol is used, is:

$$\left\lceil {{{\log }_2}{{2LtR + 2K} \over K}} \right\rceil $$

$$\left\lceil {{{\log }_2}{{2LtR} \over K}} \right\rceil $$

$$\left\lceil {{{\log }_2}{{2LtR + K} \over K}} \right\rceil $$

$$\left\lceil {{{\log }_2}{{2LtR + 2K} \over {2K}}} \right\rceil $$

GATE CSE 2007

MCQ (Single Correct Answer)

-0.6

The address of a class B host is to be split into subnets with a 6-bit subnet number. What is the maximum number of subnets and the maximum number of hosts in each subnet?

62 subnets and 262142 hosts.

64 subnets and 262142 hosts.

62 subnets and 1022 hosts.

64 subnets and 1024 hosts.

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