Tuesday, September 8, 2015

Pass4sure 640-722 Question Answer

The IEEE 802.11n standard provides 40-MHz channels, improved MAC efficiency, and MIMO. Which three elements define the 802.11n implementation of MIMO? (Choose three.) 

 

A. channel bonding
B. dynamic frequency selection
C. maximal ratio combining
D. packet aggregation
E. spatial multiplexing
F. transmit beam forming

Answer: C, E, F

 

 

 

Which two statements about WiMAX technology are true? (Choose two.) 


A. WiMAX is defined by 802.11i.
B. Typically, fixed WiMAX networks have a higher-gain directional antenna installed near the client.
C. WiMAX is capable of working as a long-range system over several miles.
D. WiMAX works only for licensed frequencies.

Answer: B, C

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.