Which of the following statements is incorrect in relation to multiple access pr

Question

Which of the following statements is incorrect in relation to multiple access protocols:

A.pure ALOHA algorithm lets users transmit whenever they have data to be sent, and allows for collisions to happen; if a frame was destroyed, then the sender just waits a random amount of time and sends it again

B.slotted ALOHA system divides time into discrete intervals called slots, each interval corresponding to one frame

C.protocols in which stations listen for a carrier (i.e. a transmission) and act accordingly are called carrier sense protocols

D.the token ring protocol allows for collisions to happen, and next addresses the collisions

Explanation / Answer

D.the token ring protocol allows for collisions to happen, and next addresses the collisions.

A token ring network is a local area network. Where all computers are connected in a ring or star topology and pass one or more logical tokens from host to host.Only a host that holds a token can send data, and tokens are released when receipt of the data is confirmed. Token ring networks prevent data packets from colliding on a network segment because data can only be sent by a token holder and the number of tokens available is controlled.

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