Which Is CORRECT Regarding IEEE 802.11 Standards

Multiple Choice

Which is CORRECT regarding IEEE 802.11 standards?

A) All standards except 802.11n rely on the spread spectrum technology.
B) Frequency bands used by the standards are licensed by the government.
C) Open authentication means that a user selected password is used for the authentication of a host station.
D) The standards allow hands-off between basic service sets.
E) In order to transmit frames, a host should associate with an AP first and then authenticate itself to the AP.