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Question

In which method a station sends data when it receives a special frame called a token.

A
Polling
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B
Token passing
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C
Collision
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D
CDMA
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Solution

The correct option is D Token passing

In which method a station sends data when it receives a special frame called a token passing.

Token Passing. In the access method known as token passing, a special type of packet, called a token, circulates around a cable ring from computer to computer. When any computer on the ring needs to send data across the network, it must wait for a free token. ... The computer can now transmit data.

On a local area network, token passing is a channel access method where a signal called a token is passed between nodes to authorize that node to communicate. In contrast to polling access methods, there is no pre-defined "master" node.

It uses a special three-byte frame called a "token" that travels around a logical "ring" of workstations or servers. This token passing is a channel access method providing fair access for all stations, and eliminating the collisions of contention-based access methods.


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