ACA Wireless Technologies 4

Question 1

Which Aruba feature automatically adjusts AP transmit power and channel to optimize RF coverage?

Accepted Answer

ARM (Adaptive Radio Management)

Answer

ARM (Adaptive Radio Management) dynamically adjusts AP transmit power and channel selection to minimize interference and optimize coverage.

Question 2

What is the purpose of a 'virtual AP' (VAP) in an Aruba WLAN deployment?

Accepted Answer

It allows a single physical AP to broadcast multiple SSIDs with different policies

Answer

A virtual AP (VAP) is a logical entity on a physical Aruba AP that maps an SSID to a specific VLAN and security policy.

Question 3

Which 802.11 standard first introduced support for operation in the 6 GHz frequency band?

Accepted Answer

802.11ax (Wi-Fi 6E)

Answer

802.11ax Wi-Fi 6E extended the standard to the 6 GHz band, providing additional spectrum and less congestion.

Question 4

What does CSMA/CA stand for and why is it used in Wi-Fi?

Accepted Answer

Carrier Sense Multiple Access / Collision Avoidance — used to reduce frame collisions on shared wireless medium

Answer

CSMA/CA (Carrier Sense Multiple Access / Collision Avoidance) is Wi-Fi's medium access method; devices listen before transmitting to avoid collisions.

Question 5

In an Aruba instant AP (IAP) deployment, what role does the 'virtual controller' play?

Accepted Answer

It is the elected master IAP that manages the cluster configuration without an external controller

Answer

In Aruba Instant, one IAP is elected as the virtual controller to manage cluster configuration, eliminating the need for a dedicated hardware controller.

(ACA) Aruba Certified Associate Certification Practice Test

(ACA) Aruba Certified Associate Certification Practice Test

ACA Wireless Technologies 4