HPE Aruba Networking Certified Associate - Campus Access (ACA) HPE6-A85 — Questions and Answers

Question 1: Which QoS mechanism enforces a traffic rate limit by dropping packets that exceed the defined rate?

Traffic shaping
Weighted Random Early Detection (WRED)
Traffic policing (Correct answer)
Weighted Fair Queuing (WFQ)

Correct answer: Traffic policing

Traffic policing drops or re-marks packets that exceed the configured rate limit, providing hard enforcement of the policy.

Question 2: What does Aruba AirWave VisualRF provide to network administrators?

A floor plan-based view of AP placement and wireless coverage (Correct answer)
Real-time firmware compliance status
Switch port utilization heat maps
VLAN configuration visualization

Correct answer: A floor plan-based view of AP placement and wireless coverage

VisualRF in Aruba AirWave provides a floor plan-based visualization of AP placement, wireless coverage, and RF environment.

Question 3: Which type of VLAN is dedicated to carrying voice traffic with priority tagging on Aruba switches?

Data VLAN
Native VLAN
Management VLAN
Voice VLAN (Correct answer)

Correct answer: Voice VLAN

A Voice VLAN is a dedicated VLAN configured on switch ports to carry VoIP traffic with appropriate QoS priority tagging.

Question 4: Which queuing mechanism gives absolute priority to delay-sensitive traffic, ensuring it is always dequeued first?

Class-Based Weighted Fair Queuing (CBWFQ)
First In First Out (FIFO)
Weighted Fair Queuing (WFQ)
Strict Priority Queuing (PQ) (Correct answer)

Correct answer: Strict Priority Queuing (PQ)

Strict Priority Queuing always services the highest-priority queue first before any other queue, guaranteeing minimal delay for sensitive traffic like VoIP.

Question 5: What is the key difference between static routing and dynamic routing?

Static routing requires a dedicated router; dynamic routing works on switches
Static routes are manually configured; dynamic routes are learned automatically via routing protocols (Correct answer)
Static routing only works with IPv6; dynamic routing works with IPv4
Static routing uses encryption; dynamic routing does not

Correct answer: Static routes are manually configured; dynamic routes are learned automatically via routing protocols

Static routes are manually entered by an administrator and do not adapt to topology changes, while dynamic routing protocols automatically discover and update routes based on network changes.

Question 6: Which Aruba solution provides posture assessment to check endpoint compliance before granting network access?

ClearPass OnGuard (Correct answer)
Aruba Central
NetEdit
AirWave

Correct answer: ClearPass OnGuard

ClearPass OnGuard is the posture assessment agent that checks endpoint health (antivirus, patch level, firewall status) before allowing access.

Question 7: What does WRED stand for and what problem does it solve?

Weighted Round-Robin External Delivery — balances load across WAN circuits
Weighted Random Early Detection — prevents tail-drop congestion by proactively dropping packets before queues fill (Correct answer)
Wireless Routing Efficiency Design — optimizes wireless routing paths
Wide-Range Error Detection — identifies transmission errors on WAN links

Correct answer: Weighted Random Early Detection — prevents tail-drop congestion by proactively dropping packets before queues fill

WRED (Weighted Random Early Detection) randomly drops packets before queues are completely full, preventing TCP global synchronization and favoring lower-priority traffic for drops.

Question 8: What is the difference between a routing protocol and a routed protocol?

A routing protocol carries user data; a routed protocol only manages router tables
A routing protocol exchanges routing information between routers; a routed protocol is the protocol whose traffic is being routed (Correct answer)
A routing protocol runs only on edge routers; a routed protocol runs on all devices
A routing protocol uses UDP; a routed protocol uses TCP

Correct answer: A routing protocol exchanges routing information between routers; a routed protocol is the protocol whose traffic is being routed

A routing protocol like OSPF exchanges topology information between routers, while a routed protocol like IPv4 is the actual payload being forwarded.

Question 9: Which deployment model does Aruba Central support to allow management of both cloud-connected and on-premises infrastructure?

Air-gapped offline management
Hypervisor-only deployment
Physical appliance management only
Hybrid cloud management (Correct answer)

Correct answer: Hybrid cloud management

Aruba Central supports a hybrid cloud management model, allowing organizations to manage cloud-connected devices alongside on-premises infrastructure from the same platform.

Question 10: What is route summarization (also called route aggregation)?

Distributing routes from one protocol into another
Assigning multiple IP addresses to a single router interface
Combining multiple specific routes into a single larger prefix to reduce routing table size (Correct answer)
Splitting a large subnet into smaller ones for better management

Correct answer: Combining multiple specific routes into a single larger prefix to reduce routing table size

Route summarization combines multiple contiguous specific routes into a single summary advertisement to reduce routing table size and LSA flooding.

Question 11: What is the most likely cause when a DHCP client cannot obtain an IP address?

DHCP server unreachable, scope exhaustion, or missing DHCP helper-address on the router (Correct answer)
Physical cable fault on the switch uplink
Spanning tree port blocked on the access layer
802.1X authentication timeout

Correct answer: DHCP server unreachable, scope exhaustion, or missing DHCP helper-address on the router

DHCP failures are typically caused by the DHCP server being unreachable, the IP scope being exhausted, or a missing relay agent on the router.

Question 12: Which DSCP Assured Forwarding (AF) class is recommended for interactive video conferencing traffic?

AF11 (DSCP 10)
AF41 (DSCP 34) (Correct answer)
CS1 (DSCP 8)
AF21 (DSCP 18)

Correct answer: AF41 (DSCP 34)

AF41 (DSCP 34) is the recommended marking for interactive video traffic per RFC 4594, providing high-priority assured forwarding with low drop probability.

Question 13: In Aruba Central, what does the Audit Trail feature track?

All configuration changes made by administrators with timestamps and user identities (Correct answer)
DHCP lease assignments for tracked devices
Client roaming events between access points
Firmware version history for all managed devices

Correct answer: All configuration changes made by administrators with timestamps and user identities

The Audit Trail in Aruba Central logs all configuration changes including who made the change, what was changed, and when it occurred.

Question 14: What is the purpose of RADIUS accounting in an Aruba network security deployment?

To encrypt user credentials during authentication
To assign IP addresses via DHCP
To provide session records (start/stop/interim) for audit, billing, and analytics (Correct answer)
To replace the need for 802.1X

Correct answer: To provide session records (start/stop/interim) for audit, billing, and analytics

RADIUS accounting sends Start, Interim-Update, and Stop messages to the RADIUS server, recording session duration, bytes transferred, and user identity for audit purposes.

Question 15: What does BGP stand for and where is it primarily used?

Basic Gateway Protocol; used within a single enterprise campus
Backup Gateway Protocol; used for redundant default routes
Bridged Gateway Protocol; used for Layer 2 extensions
Border Gateway Protocol; used between autonomous systems on the internet (Correct answer)

Correct answer: Border Gateway Protocol; used between autonomous systems on the internet

BGP is the path-vector routing protocol used between autonomous systems and is the routing protocol of the internet.

Question 16: What is the function of the Aruba EdgeConnect 'Boost' WAN optimization feature?

To compress wireless frames at the AP level
To add redundant WAN links automatically when primary links fail
To increase the physical speed of WAN interfaces
To apply TCP acceleration and data reduction techniques to specific application traffic (Correct answer)

Correct answer: To apply TCP acceleration and data reduction techniques to specific application traffic

EdgeConnect Boost applies TCP acceleration, data deduplication, and compression to designated application flows, reducing WAN bandwidth usage and improving application response times.

Question 17: In the context of Aruba routing, what is a VLAN interface (SVI) used for?

To route traffic between VLANs at Layer 3 on a multilayer switch (Correct answer)
To manage DHCP scope assignments
To configure trunk ports between switches
To enable spanning tree on a VLAN

Correct answer: To route traffic between VLANs at Layer 3 on a multilayer switch

A VLAN interface (Switch Virtual Interface) provides a Layer 3 IP address for a VLAN, enabling inter-VLAN routing on a multilayer switch.

Question 18: Which Aruba Central feature provides AI-powered insights to identify and resolve network issues?

AI Insights (Correct answer)
RF Planning
Network Health
Client Match

Correct answer: AI Insights

AI Insights in Aruba Central leverages machine learning to analyze network data and proactively identify potential issues.

Question 19: What is the valid range of DSCP values that can be assigned to IP packets?

0–15
0–7
0–255
0–63 (Correct answer)

Correct answer: 0–63

DSCP uses a 6-bit field in the IP header's ToS byte, giving a range of 0 to 63.

Question 20: What does 'application-aware routing' mean in the context of Aruba SD-WAN?

All applications are encrypted before leaving the branch
SD-WAN automatically updates application software on branch servers
The SD-WAN device inspects URLs to filter web content
Traffic is steered over WAN links based on the specific application's requirements such as latency, jitter, or packet loss thresholds (Correct answer)

Correct answer: Traffic is steered over WAN links based on the specific application's requirements such as latency, jitter, or packet loss thresholds

Application-aware routing in Aruba SD-WAN identifies applications and routes their traffic over the WAN path that best meets their specific performance requirements, such as low-latency paths for VoIP.

Question 21: What type of alert in Aruba Central notifies administrators about threshold-based events?

Event Notifications
Health Checks
Threshold Alerts (Correct answer)
Audit Logs

Correct answer: Threshold Alerts

Threshold Alerts in Aruba Central trigger notifications when monitored metrics exceed or fall below defined values.

Question 22: In ClearPass, which component is responsible for enforcing the policy decision by communicating directly with the network device (e.g., controller or switch)?

AirGroup
Enforcement Profiles & Policies (Correct answer)
Insight
Policy Manager

Correct answer: Enforcement Profiles & Policies

Enforcement Profiles define what action to take (e.g., VLAN, role, ACL), and the Enforcement Policy maps those profiles to policy rule outcomes sent to the network device.

Question 23: On an Aruba CX switch, which command displays the VLAN database?

show ip route
show interfaces
show spanning-tree
show vlan (Correct answer)

Correct answer: show vlan

The show vlan command on Aruba CX switches displays all configured VLANs and their associated port memberships.

Question 24: What is the role of the Aruba Orchestrator in an SD-WAN deployment?

To provide wireless spectrum analysis for branch APs
To serve as the centralized SD-WAN management and policy controller for all EdgeConnect appliances (Correct answer)
To perform deep packet inspection on all WAN traffic
To act as the primary DHCP server for all branch offices

Correct answer: To serve as the centralized SD-WAN management and policy controller for all EdgeConnect appliances

Aruba Orchestrator is the centralized management platform for Aruba EdgeConnect SD-WAN, providing policy configuration, template management, visibility, and orchestration across all branch appliances.

Question 25: Which Aruba feature steers dual-band capable clients to the 5 GHz band instead of 2.4 GHz?

ClientMatch
ARM
AirMatch
Band Steering (Correct answer)

Correct answer: Band Steering

Band Steering encourages dual-band clients to connect to the less congested 5 GHz band by delaying probe responses on 2.4 GHz.

Question 26: In Wi-Fi 6 (802.11ax), what is the maximum number of spatial streams supported?

6
4
12
8 (Correct answer)

Correct answer: 8

Wi-Fi 6 (802.11ax) supports up to 8 spatial streams for MIMO transmission, doubling the theoretical throughput per radio.

Question 27: Which ARP security feature on Aruba switches prevents ARP spoofing attacks by validating ARP packets against the DHCP Snooping binding table?

Gratuitous ARP Blocker
ARP Guard
ARP Proxy
Dynamic ARP Inspection (DAI) (Correct answer)

Correct answer: Dynamic ARP Inspection (DAI)

Dynamic ARP Inspection (DAI) validates ARP packets against the DHCP Snooping binding table, dropping ARP packets with invalid MAC-to-IP mappings to prevent ARP spoofing.

Question 28: What Aruba tool would you use to visualize the RF environment and identify coverage gaps?

Aruba NetEdit topology view
Aruba Central Audit Trail
Aruba Central RF Health or Aruba AirWave VisualRF (Correct answer)
ClearPass Access Tracker

Correct answer: Aruba Central RF Health or Aruba AirWave VisualRF

Aruba Central RF Health and AirWave VisualRF provide floor plan-based RF visualization to identify coverage gaps, interference, and channel planning issues.

Question 29: In Aruba's product portfolio, what does 'HPE Aruba Networking' refer to?

Only the HPE wired switching products
A separate company from Aruba Networks
A cloud-only service offering
The rebranded Aruba product line under HPE ownership (Correct answer)

Correct answer: The rebranded Aruba product line under HPE ownership

Following Hewlett Packard Enterprise's acquisition of Aruba Networks in 2015, the combined portfolio is marketed as 'HPE Aruba Networking,' encompassing both Aruba wireless and HPE switching products.

Question 30: Which Aruba feature enables seamless client roaming between APs without re-authentication delays?

Client Match
Band Steering
AirSlice
Fast Roaming (802.11r) (Correct answer)

Correct answer: Fast Roaming (802.11r)

IEEE 802.11r (Fast BSS Transition) enables fast roaming by caching security credentials so clients roam between APs without full re-authentication.

Question 31: What is the primary purpose of Quality of Service (QoS) in a network?

To prioritize certain types of traffic to ensure performance (Correct answer)
To increase the total available bandwidth
To encrypt traffic between endpoints
To block unauthorized network access

Correct answer: To prioritize certain types of traffic to ensure performance

QoS prioritizes certain traffic types (such as voice and video) to guarantee the performance levels they require, rather than increasing raw bandwidth.

Question 32: What cloud infrastructure provider powers Aruba Central's backend?

Amazon Web Services (AWS) (Correct answer)
Microsoft Azure
IBM Cloud
Google Cloud Platform

Correct answer: Amazon Web Services (AWS)

Aruba Central runs on Amazon Web Services, leveraging its global infrastructure for reliability and geographic scalability.

Question 33: What is NAT (Network Address Translation) primarily used for in enterprise networks?

To compress packets before sending them over the WAN
To encrypt traffic between internal and external networks
To assign VLAN tags to outbound traffic
To translate private IP addresses to public IP addresses for Internet access (Correct answer)

Correct answer: To translate private IP addresses to public IP addresses for Internet access

NAT translates private RFC 1918 IP addresses used internally to a public IP address for Internet communication, conserving public IPv4 address space.

Question 34: What is the first step in a systematic network troubleshooting methodology?

Define the problem and gather information (Correct answer)
Restart all network devices
Replace suspected hardware components
Update all device firmware

Correct answer: Define the problem and gather information

The first step in systematic troubleshooting is clearly defining the problem by gathering information from users and monitoring systems before taking any action.

Question 35: What is the Aruba GreenLake platform?

A physical data center appliance for on-premises cloud computing
An open-source network operating system for Aruba devices
A cloud-delivered, consumption-based IT platform for managing Aruba networking infrastructure as a service (Correct answer)
A wireless spectrum analysis tool for RF planning

Correct answer: A cloud-delivered, consumption-based IT platform for managing Aruba networking infrastructure as a service

Aruba GreenLake is a cloud-delivered, consumption-based service model that delivers networking infrastructure and management as a service with flexible, pay-as-you-grow pricing.

Question 36: What does the term 'channel bonding' mean in the context of 802.11n and later standards?

Encrypting channel traffic with AES bonding
Aggregating two adjacent 20 MHz channels into a 40 MHz or wider channel for higher throughput (Correct answer)
Combining multiple SSIDs onto one channel
Linking two APs together for redundancy

Correct answer: Aggregating two adjacent 20 MHz channels into a 40 MHz or wider channel for higher throughput

Channel bonding combines adjacent 20 MHz channels into 40, 80, or 160 MHz channels to increase data throughput.

Question 37: Which Aruba security feature uses tunneled node to forward all client traffic to a central security inspection point?

Gateway Advanced Security (formerly Policy Enforcement Firewall)
Role-based access control
Dynamic Segmentation with tunnel mode (Correct answer)
AirGroup

Correct answer: Dynamic Segmentation with tunnel mode

Dynamic Segmentation in tunnel mode forwards client traffic through a GRE tunnel to the Mobility Controller or SD-Branch gateway for centralized policy enforcement and deep packet inspection.

Question 38: Which Aruba Central dashboard widget shows the real-time health of the entire network?

Topology Map
Client Overview
Network Summary (Correct answer)
Device Inventory

Correct answer: Network Summary

The Network Summary widget in Aruba Central provides a real-time view of overall network health including device and client status.

Question 39: Which 802.11 QoS standard defines four access categories (Voice, Video, Best Effort, Background)?

802.11e / WMM (Correct answer)
802.11r
802.11v
802.11k

Correct answer: 802.11e / WMM

802.11e (implemented as WMM — Wi-Fi Multimedia) defines four access categories with different EDCA parameters to prioritize time-sensitive traffic.

Question 40: Which routing protocol uses the Dijkstra shortest path first (SPF) algorithm and is classified as a link-state protocol?

BGP
EIGRP
RIP
OSPF (Correct answer)

Correct answer: OSPF

OSPF (Open Shortest Path First) is a link-state routing protocol that builds a complete topology map and uses Dijkstra's SPF algorithm to compute the best paths.

Question 41: In Aruba switching, what is VSX (Virtual Switching Extension) used for?

To extend VLANs across WAN links
To create an active-active switch pair that appears as a single logical switch (Correct answer)
To virtualize access points as switch ports
To provide out-of-band management access

Correct answer: To create an active-active switch pair that appears as a single logical switch

VSX on Aruba CX switches creates an active-active high-availability pair that appears as a single logical device to the rest of the network.

Question 42: What Aruba solution integrates with EdgeConnect SD-WAN to provide cloud-delivered security at branch offices without backhauling traffic to HQ?

Aruba Instant
Aruba AirWave
Security Service Edge (SSE) cloud security integration (Correct answer)
Aruba ClearPass

Correct answer: Security Service Edge (SSE) cloud security integration

Aruba SD-WAN integrates with cloud-based Security Service Edge (SSE) solutions, allowing branch Internet traffic to be inspected locally by cloud security rather than backhauled to a central data center.

Question 43: What is the purpose of a network baseline in performance monitoring?

To configure default gateway settings
To define the network topology diagram
To establish normal operating metrics for comparison against anomalies (Correct answer)
To set maximum bandwidth limits

Correct answer: To establish normal operating metrics for comparison against anomalies

A network baseline documents normal operating metrics so that deviations can be identified as potential issues or anomalies.

Question 44: What is the purpose of a loopback interface in Aruba router configuration?

To bridge wired and wireless networks
To provide a stable router ID and management endpoint that is always up (Correct answer)
To connect to the internet service provider
To create a test loop for cable continuity testing

Correct answer: To provide a stable router ID and management endpoint that is always up

A loopback interface provides a stable, always-up IP address used as a router ID for protocols like OSPF and as a reliable management endpoint.

Question 45: Which IPv6 address type is only routable within the local network segment and always begins with fe80?

Global Unicast
Link-Local (fe80::/10) (Correct answer)
Loopback (::1)
Multicast

Correct answer: Link-Local (fe80::/10)

IPv6 Link-Local addresses (fe80::/10 prefix) are automatically assigned to interfaces and are only routable within the local link, not forwarded by routers.

Question 46: What protocol does OSPF use at the IP layer for neighbor communication?

IP Protocol 89 (Correct answer)
IP Protocol 88
UDP 520
TCP 179

Correct answer: IP Protocol 89

OSPF uses IP Protocol number 89 for all communication including hello packets, LSAs, and database exchange between neighbors.

Question 47: Which wireless attack does Aruba's Wireless Intrusion Protection (WIP) detect by identifying a legitimate SSID broadcast from an unauthorized MAC address?

Deauthentication flood
Evil twin / honeypot AP (Correct answer)
ARP poisoning
DHCP starvation

Correct answer: Evil twin / honeypot AP

An evil twin attack uses a rogue AP broadcasting a legitimate SSID to lure clients; WIP detects the SSID/BSSID mismatch against the valid AP table.

Question 48: What distinguishes Aruba Instant On from standard Aruba Instant (IAP) products?

Instant On supports more VLANs
Instant On only supports 2.4 GHz radio
Instant On requires a mobility controller
Instant On is designed for small business while IAP targets enterprise deployments (Correct answer)

Correct answer: Instant On is designed for small business while IAP targets enterprise deployments

Aruba Instant On is a simplified networking solution targeted at small and medium businesses with easy setup, while Aruba Instant (IAP) is the enterprise-grade controller-less solution with advanced features.

Question 49: Which metrics does Aruba SD-WAN monitor to determine the health of a WAN path for real-time applications like VoIP?

Packet loss, latency, and jitter (Correct answer)
BGP route count
Number of active VPN tunnels
Maximum transmission unit (MTU) size

Correct answer: Packet loss, latency, and jitter

Aruba SD-WAN continuously measures packet loss, latency, and jitter on each WAN path and uses these metrics to steer real-time application traffic to the path with the best quality.

Question 50: What is the purpose of the traceroute command in network troubleshooting?

To display the MAC address table
To test physical cable continuity
To verify VLAN trunk configuration
To identify each hop along the path to a destination and measure per-hop latency (Correct answer)

Correct answer: To identify each hop along the path to a destination and measure per-hop latency

Traceroute sends packets with incrementing TTL values to identify each router hop between source and destination and measure per-hop round-trip times.

Question 51: What is DHCP Snooping, and what does it protect against?

A protocol that speeds up DHCP lease renewal; protects against IP conflicts
A monitoring tool that logs all DHCP traffic; protects against bandwidth overuse
A security feature that validates DHCP messages; protects against rogue DHCP servers (Correct answer)
A feature that encrypts DHCP traffic; protects against eavesdropping

Correct answer: A security feature that validates DHCP messages; protects against rogue DHCP servers

DHCP Snooping validates DHCP messages on untrusted ports and blocks unauthorized DHCP server responses, protecting clients from receiving incorrect IP configuration from rogue servers.

Question 52: What is the purpose of DHCP in an IP network?

To resolve domain names to IP addresses
To encrypt traffic between client and server
To route packets between different IP networks
To automatically assign IP addresses and network parameters to client devices (Correct answer)

Correct answer: To automatically assign IP addresses and network parameters to client devices

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses, subnet masks, default gateways, and DNS server addresses to client devices on a network.

Question 53: What metric does RIP use to determine the best path?

Delay
Bandwidth
Hop count (Correct answer)
Cost

Correct answer: Hop count

RIP uses hop count as its sole metric, with a maximum of 15 hops, and routes with 16 hops are considered unreachable.

Question 54: What advantage does cloud-hosted Aruba Central provide over traditional on-premises network management systems?

On-premises systems support more devices than cloud platforms
Cloud hosting eliminates the need for dedicated NMS servers, reduces maintenance overhead, and provides always-current software (Correct answer)
Cloud-based management requires lower WAN bandwidth than on-premises systems
Aruba Central does not require any licensing unlike on-premises NMS platforms

Correct answer: Cloud hosting eliminates the need for dedicated NMS servers, reduces maintenance overhead, and provides always-current software

Cloud-hosted Aruba Central eliminates the need to provision, maintain, and update dedicated NMS server hardware, as Aruba manages the infrastructure and continuously delivers new features.

Question 55: What is the purpose of ECMP (Equal-Cost Multi-Path) routing?

To elect a primary and backup path for failover
To summarize multiple subnets into a single route advertisement
To prevent routing loops in distance-vector protocols
To load-balance traffic across multiple paths with equal routing metrics (Correct answer)

Correct answer: To load-balance traffic across multiple paths with equal routing metrics

ECMP allows a router to load-balance traffic across multiple equal-cost paths simultaneously, increasing throughput and redundancy.

Question 56: On Aruba AOS-CX switches, where are QoS policies most commonly applied to enforce traffic prioritization?

On ingress and egress interfaces using QoS profiles (Correct answer)
Only on uplink ports connecting to routers
Within the spanning tree configuration
On the switch management VLAN interface only

Correct answer: On ingress and egress interfaces using QoS profiles

On Aruba AOS-CX, QoS schedules and policies are applied to physical or LAG interfaces at ingress (classification/remarking) and egress (scheduling/queuing).

Question 57: What is IPv6 and why was it developed?

An encryption protocol developed to secure IPv4 networks
A wireless standard developed to replace 802.11ac
The successor to IPv4 developed to address IPv4 address exhaustion with a 128-bit address space (Correct answer)
A routing protocol designed to replace OSPF in large networks

Correct answer: The successor to IPv4 developed to address IPv4 address exhaustion with a 128-bit address space

IPv6 was developed to replace IPv4 due to IPv4 address exhaustion, using 128-bit addresses to provide an essentially unlimited pool of unique IP addresses.

Question 58: In OSPF, what triggers a Shortest Path First (SPF) recalculation?

A change in the link-state database due to a new or changed LSA (Correct answer)
An administrator manually triggering the process
A change in VLAN configuration
A scheduled timer regardless of topology changes

Correct answer: A change in the link-state database due to a new or changed LSA

OSPF triggers an SPF recalculation whenever the link-state database changes due to a new, updated, or withdrawn LSA from any router.

Question 59: Which Aruba Mobility Controller configuration option prevents a wireless client from communicating directly with other clients on the same SSID?

Load balancing
Client isolation (intra-BSS traffic blocking) (Correct answer)
Band steering
ARM channel selection

Correct answer: Client isolation (intra-BSS traffic blocking)

Client isolation (intra-BSS blocking) prevents Layer 2 traffic between clients on the same SSID, commonly used for guest networks to protect clients from each other.

Question 60: In Aruba AOS-CX switches, what is the default number of QoS queues available per port?

16
8 (Correct answer)
4
2

Correct answer: 8

Aruba AOS-CX switches support 8 egress queues per port, allowing granular traffic prioritization aligned to 802.1p CoS or DSCP values.

HPE Aruba Networking Certified Associate - Campus Access (ACA) HPE6-A85

The ACA Campus Access certification validates foundational knowledge of HPE Aruba Networking wired and wireless campus access solutions, covering switching, WLAN, routing, security, and network management. It targets entry-level network professionals and field technicians working with Aruba products.

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90 min

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67%

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