Exam-style question
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In CSMA/CA using RTS/CTS, what is the purpose of the CTS message?.
- A.To indicate that the receiver is ready and the channel can be used
- B.To encrypt the data using WPA2
- C.To identify the wireless network by its SSID
- D.To add the sender's address to a MAC address allow list
Model answer
What a good answer should say
- To indicate that the receiver is ready and the channel can be used
Explanation
Why this works
With RTS/CTS, the sender first requests permission to transmit using RTS. The receiver responds with CTS, indicating that it is ready and helping other devices avoid transmitting during the planned data transmission.
Common mistake
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