ACP Aruba Wireless Technologies and Solutions 2 — Questions and Answers
Question 1: Which Aruba feature allows a single physical AP to broadcast multiple SSIDs with different security policies?
- Virtual AP (VAP) (Correct answer)
- Air Monitor (AM)
- Mesh Portal
- Spectrum Monitor
Correct answer: Virtual AP (VAP)
Virtual APs allow a single physical AP to host multiple SSIDs, each with its own VLAN, security settings, and QoS policies.
Question 2: In Aruba's 802.11ax (Wi-Fi 6) implementation, what technology enables simultaneous uplink transmissions from multiple clients?
- DL-OFDMA
- UL-MU-MIMO (Correct answer)
- BSS Coloring
- TWT
Correct answer: UL-MU-MIMO
Uplink MU-MIMO (UL-MU-MIMO) in 802.11ax allows multiple clients to transmit simultaneously to the AP, improving uplink efficiency.
Question 3: What is the purpose of BSS Coloring in Wi-Fi 6 (802.11ax)?
- Assign VLANs to BSSIDs
- Reduce co-channel interference by tagging frames with a color ID (Correct answer)
- Enable WPA3 encryption
- Prioritize video traffic
Correct answer: Reduce co-channel interference by tagging frames with a color ID
BSS Coloring tags frames from different BSSs with unique color identifiers so stations can distinguish overlapping networks and reduce unnecessary deferrals.
Question 4: Which Aruba Central feature provides AI-driven anomaly detection and root cause analysis for WLAN issues?
- AirWave
- AppRF
- AI Insights (Correct answer)
- ClearPass Policy Manager
Correct answer: AI Insights
AI Insights in Aruba Central uses machine learning to detect network anomalies and provide guided root cause analysis to accelerate troubleshooting.
Question 5: An AP configured in Spectrum Monitor mode primarily performs which function?
- Forward client data to the controller
- Scan the RF spectrum to detect non-802.11 interference sources (Correct answer)
- Provide wireless connectivity on all radios
- Act as a mesh backhaul node
Correct answer: Scan the RF spectrum to detect non-802.11 interference sources
Spectrum Monitor mode dedicates the AP to scanning RF spectrum for non-Wi-Fi interferers like microwaves, Bluetooth, and radar using Aruba's spectrum analysis engine.
Question 6: What is the maximum number of spatial streams supported by an 802.11ac Wave 2 AP using MU-MIMO?
- 2 streams to 2 clients
- 4 streams to 4 clients (Correct answer)
- 8 streams to 8 clients
- 1 stream per client only
Correct answer: 4 streams to 4 clients
802.11ac Wave 2 MU-MIMO supports downlink transmissions to up to 4 clients simultaneously, with each client receiving up to 4 spatial streams.
Question 7: Which ArubaOS tunnel mode encapsulates all wireless client traffic in GRE and forwards it to the mobility controller?
- Decrypt-Tunnel
- Split-Tunnel
- Bridge Mode
- Tunnel Mode (Correct answer)
Correct answer: Tunnel Mode
In Tunnel Mode, all client traffic is encapsulated in GRE and forwarded to the mobility controller for centralized policy enforcement and routing.
ACP Aruba Wireless Technologies and Solutions 2
Which Aruba feature allows a single physical AP to broadcast multiple SSIDs with different security policies?