642-742 pdf

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Exam A
QUESTION 1
Which three options are benefits of U-APSD? (Choose three.)
A. synchronization of the transmission and reception of voice frames
B. bandwidth reservation
C. optimized power-save mode periods
D. increased call capacity
E. priority bandwidth and polling

Correct Answer: ACD Section: (none) Explanation
Explanation/Reference:
QUESTION 2
Which two options allow a Cisco Unified Wireless IP Phone 7925G to conserve its battery? (Choose two.)
A. PS-Poll
B. S-APSD
C. U-APSD
D. 802.11h
E. 802.11r

Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 3
Which statement describes the benefit of WMM U-APSD over legacy 802.11 power-save mode?

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