What is the purpose of RTS (request to send) and CTS (clear to send) frames in WiFi (802.11) networks? Select one or more of the answers below. [Hint: check two answers below].

Question

What is the purpose of RTS (request to send) and CTS (clear to send)  frames in WiFi (802.11) networks? Select one or more of the answers below. [Hint: check two answers below].

Accepted Answer

A CTS that is sent allows a receiver to force other nodes (other than the intended sender who sent the RTS) to refrain from transmitting, thus allowing the sender who sent the RTS to then transmit a frame with less likelihood of a collision.

Accepted Answer

RTC/CTS frames helps nodes in a wireless network mitigate the effects of the hidden terminal problem.

Answer

RTC/CTS frames allow a sender to gather CTS frames from all other network nodes, so that it knows it can then send without collisions.

Answer

A CTS  allows a receiver to let the sender (who sent that RTS) know that it (the receiver) has enough buffers to hold a frame transmitted by that sender

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