Wireless Technologies Flashcards
7 cards from real ACA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Wireless Technologies flashcards as text
Which Aruba feature automatically adjusts AP transmit power and channel to optimize RF coverage?
Answer: ARM (Adaptive Radio Management)
ARM (Adaptive Radio Management) dynamically adjusts AP transmit power and channel selection to minimize interference and optimize coverage.
What is the purpose of a 'virtual AP' (VAP) in an Aruba WLAN deployment?
Answer: It allows a single physical AP to broadcast multiple SSIDs with different policies
A virtual AP (VAP) is a logical entity on a physical Aruba AP that maps an SSID to a specific VLAN and security policy.
Which 802.11 standard first introduced support for operation in the 6 GHz frequency band?
Answer: 802.11ax (Wi-Fi 6E)
802.11ax Wi-Fi 6E extended the standard to the 6 GHz band, providing additional spectrum and less congestion.
What does CSMA/CA stand for and why is it used in Wi-Fi?
Answer: Carrier Sense Multiple Access / Collision Avoidance — used to reduce frame collisions on shared wireless medium
CSMA/CA (Carrier Sense Multiple Access / Collision Avoidance) is Wi-Fi's medium access method; devices listen before transmitting to avoid collisions.
In an Aruba instant AP (IAP) deployment, what role does the 'virtual controller' play?
Answer: It is the elected master IAP that manages the cluster configuration without an external controller
In Aruba Instant, one IAP is elected as the virtual controller to manage cluster configuration, eliminating the need for a dedicated hardware controller.
Which wireless security attack involves an unauthorized AP mimicking a legitimate SSID to intercept client traffic?
Answer: Evil Twin attack
An Evil Twin attack uses a rogue AP broadcasting the same SSID as the legitimate network to trick clients into associating with it.
What is the recommended maximum retry count behavior when a wireless client fails to connect to an AP?
Answer: The client backs off using exponential backoff and retries up to a vendor-defined limit
Wi-Fi clients use binary exponential backoff to manage retransmissions, increasing the contention window with each failed attempt up to a maximum retry limit.