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# GATE 2022: Computer Network Quiz-6

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Question 1

The maximum length of the cable (in km) for transmitting data at a rate of 100 Mbps in ethernet LAN with frame size of 1000 bits (take signal speed as 2 × 106 km/sec) is ________.

Question 2

Encoding technique use in ethernet (IEEE 802 .3) is

Question 3

The maximum length of the cable (min) for transmitting data at a rate of 800 Mbps in IEEE 802.3 LAN with a frame size of 16,000 bits is ________ km. Assume the signal speed in the cable to be, 2,50,000 km

Question 4

Consider a network, in which the data transmission rate is 10 Mbps. It uses CSMA/CD in the MAC layer. The maximum signal propagation time from one node to another node is 50 microseconds. What is the minimum size of a frame in the network in bits?

Question 5

A channel is operating at 5000 bps and the propagation delay is 16 ms. What would be the minimum frame size (bytes) for stop and wait flow control to get 60% link utilization ________.

Question 6

Consider the network with 8 nodes running the carrier sense multiple access MAC protocol. The maximum datarate of network is 10 Mbps. Each node send traffic according to some unknown random process at an average rate of 1 Mbps per node including retries. If networks utilization is 0.75, with each packet size 10000 bits and each node average queue size is 5 packet, then the fraction of packets sends by the nodes experiences a collision are ________ in % (upto 2 decimal places) [Assume no packet dropped except collided packets]
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