Aruba Wireless Mesh Professional 4.2 認定 AWMP 試験問題:

1. In 802.11n, what is the difference between HT20 and HT40 operation?

A) 20 MHz wide channels are used with HT20, while 40 MHz channels are used with HT40
B) HT20 uses a short guard interval while HT40 uses a long guard interval
C) HT40 corresponds to a 40Mbps PHY rate, while HT20 uses a 20Mbps PHY rate
D) HT20 uses 2 spatial streams, while HT40 uses 4 spatial streams

2. Which of the following key elements are not part of 802.11n?

A) 40 MHz channel
B) Support of maximum 5 antennas per radio
C) backward compatible to 802.11 a/b/g
D) 4.9 GHz support
E) packet aggregation

3. Which methods by default can be used to access an Aruba mesh router?

A) Telnet
B) SSH
C) Serial
D) HTTPS

4. Which of these statements is correct, concerning antenna selection in mesh network design? Choose all that apply.

A) Use of non Aruba-certified antennas could be in violation of regulatory domain certifications.
B) Almost any good quality antennas will function equivalently to an Aruba-certified antenna, as long as they are aimed correctly.
C) Specifying two SISO (Single Input Single Output) antennas is a recommended substitute for a MIMO antenna.
D) Antenna type and gain are important considerations; antennas should be chosen for specific purposes.

5. Downtilt omnidirectional antennas are primarily useful for

A) Covering environments with lots of vertical obstructions using high mounting locations (e.g. container yards)
B) Pigeons
C) Maximizing backhaul bandwidth on point-to-multipoint mesh deployments
D) Covering large open areas from low mounting locations (e.g. playing fields)

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