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Consider the following statements:

Which of the above statement is correct?

A Hidden terminals can be handled by using either of RTS or CTS control frame.

B RTS/CTS exchange helps in reducing collisions and leads to efficient use of channel resources.

C 802.11 frame has three address fields.

D By the help of 802.11 frame, we can come to known whether encryption is used on n

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Answer $\rightarrow$ D.

A) False $\rightarrow$ as it is saying either of RTS or CTS, which is false since both are required.

B) False $\rightarrow$ RTS and CTS does not lead to efficient utilization of Channel, but they are considered as OVERHEAD over the Channel.

C) False $\rightarrow$ it has four Addresses.

D) True $\rightarrow$ $IEEE 802.11$ has field WEP subfield under frame control field, if set to 1 means WEP is used otherwise not used.

Ref :- this.

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