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1) Select the correct statement(s) regarding IEEE 802.11 WLAN MAC access. a. DCF is a contention-based...

1) Select the correct statement(s) regarding IEEE 802.11 WLAN MAC access.

a. DCF is a contention-based access method in which data collisions can occur

b. Frame exchange and four frame exchange protocols are part of the DCF method

c. PCF is an optional method in which no data collisions occur

d. all statements are correct

2) ZigBee is a WPAN specification which is not part of the IEEE 802.15 family, and is designed to provide connectivity to machine-to-machine devices only.

True

False

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