COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK TOPOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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CSMA/CD technology-is used when two nodes (on a network topology) transmit simultaneously, a carrier sensing scheme detects other signals while transmitting a frame. Both nodes (workstations/printers/mobiles) then stop transmitting and wait for a set time (usually 30 minutes) before trying to re-transmit.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Collisions do not occur in a star topology, because the central device manages traffic by using the carrier-sense multiple access with collision detection (CSMA/CD) protocol. In a star topology, a failure in the cable that a device uses to connect to the network will bring the whole network to a stop.
Detailed explanation-2: -Carrier-sense multiple access with collision avoidance (CSMA/CA) in computer networking, is a network multiple access method in which carrier sensing is used, but nodes attempt to avoid collisions by beginning transmission only after the channel is sensed to be “idle".
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