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Aruba ACDA practice questions

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Question 1Design Fundamentals and Methodology

In a structured wireless design methodology, which document is produced first and defines the business drivers, constraints, and success criteria for the WLAN?

  1. The configuration baseline
  2. The site survey report
  3. The validation test plan
  4. The requirements specification Correct answer.

Explanation

A structured design process begins by capturing business and technical requirements before any survey or configuration work. The requirements specification establishes scope, constraints, and measurable success criteria that later design artifacts trace back to. Surveys, configurations, and test plans are downstream outputs of that requirements phase.

Question 2Design Fundamentals and Methodology

Which design phase immediately follows the completion and approval of the logical and physical WLAN design in a typical structured methodology?

  1. Post-deployment validation
  2. Implementation and configuration Correct answer.
  3. Decommissioning
  4. Requirements gathering

Explanation

Once the logical design (SSIDs, VLANs, security, roles) and physical design (AP placement, RF plan) are approved, the project moves into implementation and configuration. Validation follows implementation, not design approval directly. Requirements gathering precedes design, and decommissioning is an end-of-life activity.

Question 3Design Fundamentals and Methodology

A retail chain wants guest Wi-Fi in stores but requires that guest traffic never reach internal point-of-sale systems. Which design element most directly enforces this requirement?

  1. Assigning guest SSIDs to the same VLAN as corporate users but using WPA3
  2. Enabling band steering on the guest SSID
  3. Placing guest SSIDs on a dedicated VLAN with a firewall or role-based policy restricting access to internal subnets Correct answer.
  4. Increasing the minimum basic rate on the guest SSID

Explanation

Traffic separation is a segmentation concern, achieved through dedicated VLANs and enforcement points such as firewalls or role-based policies. RF tuning features like band steering and basic rates affect performance, not security boundaries. Sharing a VLAN with corporate users defeats the isolation goal regardless of encryption.

Question 4Design Fundamentals and Methodology

When gathering WLAN requirements, which item is best classified as a constraint rather than a functional requirement?

  1. The building's existing cabling limits AP uplinks to 1 Gbps Correct answer.
  2. Users must be able to roam between floors without dropping voice calls
  3. Guests must authenticate through a captive portal
  4. The network must support 802.11ax clients

Explanation

Constraints are fixed limitations the design must work within, such as existing cabling capacity. The other items describe desired capabilities the solution must deliver, which are functional requirements. Separating constraints from requirements guides trade-off decisions during design.

Question 5Design Fundamentals and Methodology

What is the primary purpose of a predictive (planning) site survey in the design methodology?

  1. To certify cable runs for PoE budget compliance
  2. To validate that roaming thresholds meet voice requirements
  3. To model AP placement and coverage using a floor plan before equipment is installed Correct answer.
  4. To measure interference from neighboring networks after deployment

Explanation

Predictive surveys use floor plans and attenuation models to estimate AP count, placement, and coverage before hardware is deployed. Measured interference and roaming validation are outcomes of validation or verification surveys. Cabling certification is a separate physical-layer activity.

Question 6Design Fundamentals and Methodology

A validation survey shows strong signal but poor throughput in a warehouse aisle. Which follow-up action best fits the methodology's iterative design loop?

  1. Analyze channel utilization and interference, then adjust channel plan and AP placement and re-validate Correct answer.
  2. Immediately add APs at maximum density across the entire warehouse
  3. Lower the transmit power on all APs to the minimum
  4. Replace the site survey tool with a different vendor

Explanation

The design methodology treats validation findings as inputs to a targeted redesign, so the cause must be diagnosed before changes are made. High signal with low throughput typically points to co-channel interference or high utilization. Blindly adding APs or minimizing power can worsen the problem.

Question 7Design Fundamentals and Methodology

Which design artifact defines the mapping of SSIDs to VLANs, security policies, and user roles?

  1. The rack elevation
  2. The bill of materials
  3. The RF coverage plan
  4. The logical design Correct answer.

Explanation

The logical design describes how the network is structured at Layers 2 and 3 and above, including SSIDs, VLANs, security, and role policies. The bill of materials and rack elevation are procurement and physical artifacts. The RF coverage plan addresses radio-level placement and coverage.

Question 8Design Fundamentals and Methodology

A hospital requires that clinical devices remain connected during roaming between APs. Which design consideration most directly supports this?

  1. Using open authentication for clinical SSIDs
  2. Disabling 5 GHz on clinical APs
  3. Tuning roaming thresholds and ensuring adequate cell overlap between APs Correct answer.
  4. Increasing the SSID count per AP

Explanation

Roaming quality depends on well-tuned client/AP roaming thresholds and sufficient cell overlap so transitions occur smoothly. SSID count does not improve roaming and can add overhead. Disabling 5 GHz reduces capacity, and open authentication violates security requirements.

Question 9Design Fundamentals and Methodology

Which factor is most important when determining the number of APs needed for a high-density auditorium design?

  1. The color of the ceiling tiles
  2. Expected client count and application throughput per client Correct answer.
  3. The number of wired switch ports in the IDF
  4. The brand of client devices used by attendees

Explanation

High-density design is capacity-driven: the number of clients and their required throughput determine AP count and channel reuse. Physical aesthetics, switch port count, and device brand are not primary capacity inputs. Capacity planning must precede coverage-only planning in dense venues.

Question 10Design Fundamentals and Methodology

A design team must choose between 20 MHz and 40 MHz channels in a dense office. Which reasoning best reflects sound design methodology?

  1. Use 80 MHz in 5 GHz to reduce the number of APs needed
  2. Use 40 MHz everywhere to maximize per-client throughput
  3. Use 20 MHz in dense areas to increase available non-overlapping channels and reduce co-channel interference Correct answer.
  4. Use the widest channel possible regardless of client density

Explanation

Channel width trades per-client throughput against spectral reuse. In dense environments, narrower 20 MHz channels yield more non-overlapping channels and lower co-channel interference. Wider channels reduce reuse and are generally reserved for low-density, high-throughput scenarios.

Question 11Design Fundamentals and Methodology

Which statement best describes the role of a design review in the WLAN methodology?

  1. It is performed only when a project runs over budget
  2. It is a procurement step to select hardware vendors
  3. It verifies that the proposed design meets documented requirements before implementation Correct answer.
  4. It replaces the need for post-deployment validation

Explanation

A design review is a checkpoint that confirms the design satisfies the requirements and constraints before build-out. It does not substitute for validation, which tests the deployed network. It is a quality gate, not a budget or procurement activity.

Question 12Design Fundamentals and Methodology

A school wants to prevent students from accessing the administrative SSID while allowing faculty. Which design approach is most appropriate?

  1. Change the administrative SSID name quarterly
  2. Hide the administrative SSID
  3. Define role-based access policies tied to authentication identity and apply them at the controller or gateway Correct answer.
  4. Restrict administrative access by MAC address allowlist only

Explanation

Identity-based role policies enforce who may join which network and what they may reach, which scales and survives credential changes. Hiding an SSID is not a security control, and rotating names adds no authorization. MAC allowlists are brittle and easily spoofed.

Question 13Design Fundamentals and Methodology

Which input is essential before performing an effective predictive RF design for a multi-floor building?

  1. The number of help-desk tickets last year
  2. The marketing budget for the WLAN
  3. Accurate floor plans with wall materials and attenuation values Correct answer.
  4. A list of end-user job titles

Explanation

Predictive modeling depends on accurate physical information, including floor plans and attenuation characteristics of walls and materials. Organizational data such as job titles and budgets do not affect RF propagation. Historical ticket counts are unrelated to predictive modeling inputs.

Question 14Design Fundamentals and Methodology

A design must support both corporate and IoT devices on the same APs. Which design decision best balances security and operational simplicity?

  1. Disable IoT support entirely to simplify the design
  2. Use the same VLAN for IoT and corporate traffic with WPA2-PSK
  3. Use separate SSIDs with distinct VLANs and security profiles for corporate and IoT traffic Correct answer.
  4. Put IoT and corporate devices on one open SSID

Explanation

Separate SSIDs mapped to distinct VLANs and security profiles let each device class get appropriate security while sharing physical AP infrastructure. Mixing traffic on one open SSID or VLAN removes segmentation. Refusing IoT support ignores a stated requirement.

Question 15Design Fundamentals and Methodology

Which metric is most appropriate for defining a coverage requirement for a general office area in a design document?

  1. A maximum number of SSIDs per AP
  2. A minimum received signal strength threshold at the client location Correct answer.
  3. The total number of switches in the closet
  4. The AP model's maximum transmit power

Explanation

Coverage requirements are expressed as measurable RF thresholds, such as minimum RSSI or SNR at client locations, so the design can be validated. SSID count, maximum AP transmit power, and switch counts are design parameters or infrastructure details, not coverage acceptance criteria.

Question 16Design Fundamentals and Methodology

In a design methodology, what distinguishes verification from validation?

  1. Validation is only performed by the hardware vendor
  2. Verification confirms the design was built as specified, while validation confirms it meets the intended use Correct answer.
  3. Verification is done before requirements are written
  4. Verification and validation are identical activities

Explanation

Verification checks conformance to the design specification, while validation checks fitness for the intended purpose against requirements. They are distinct quality activities performed at different points. Neither is a vendor-only task, and verification cannot precede requirements.

Question 17Design Fundamentals and Methodology

Which design choice best supports future capacity growth in a new office build without over-provisioning today?

  1. Skip documentation to allow flexible future changes
  2. Design cabling and switch port capacity for a higher AP count than initially deployed Correct answer.
  3. Use only 2.4 GHz to simplify planning
  4. Install the maximum number of APs immediately

Explanation

Designing infrastructure such as cabling and switch ports for future AP density allows capacity to grow without re-cabling. Installing maximum APs now over-provisions and adds interference. Skipping documentation and restricting to 2.4 GHz reduce future flexibility and performance.

Question 18Design Fundamentals and Methodology

What is the primary output of the physical design phase in a WLAN project?

  1. AP placement, mounting, cabling, and power plan Correct answer.
  2. The service level agreement
  3. The user role matrix
  4. The change management policy

Explanation

Physical design covers where and how APs are mounted, how they are cabled, and how they are powered. The role matrix belongs to logical design, while SLAs and change policies are governance documents. Physical design translates the RF plan into installable infrastructure.

Question 19Design Fundamentals and Methodology

A design proposes PoE for ceiling APs. Which constraint must be verified to ensure the design is feasible?

  1. The DNS server's lease time
  2. The color temperature of the office lighting
  3. The switch's PoE budget and the power draw of the selected AP model Correct answer.
  4. The number of SSIDs broadcast by neighboring networks

Explanation

PoE feasibility depends on the switch's total power budget and each AP's power draw, including whether the AP needs 802.3at or 802.3bt. Lighting, DNS leases, and neighboring SSIDs do not determine PoE capacity. Verifying power budgets prevents APs from being denied power.

Question 20Design Fundamentals and Methodology

Which approach best addresses a requirement for seamless guest onboarding across many venues?

  1. Standardize a captive portal with a consistent authentication profile across all sites Correct answer.
  2. Configure a unique portal per venue with unrelated policies
  3. Use open authentication with no portal at all
  4. Require manual MAC registration at each venue

Explanation

A standardized captive portal and authentication profile deliver a consistent onboarding experience and simplify operations across sites. Unique per-venue portals create inconsistency and management overhead. Open access violates onboarding requirements, and manual MAC registration does not scale.

Question 21Design Fundamentals and Methodology

Which document typically records the agreed acceptance criteria that the finished WLAN must satisfy?

  1. The incident log
  2. The MAC address table
  3. The vendor datasheet
  4. The requirements specification Correct answer.

Explanation

Acceptance criteria are derived from the requirements specification and state the measurable conditions the deployed network must meet. Incident logs and MAC tables are operational data, and vendor datasheets describe product capabilities. Acceptance criteria must trace back to documented requirements.

Question 22Design Fundamentals and Methodology

A design team is selecting between a centralized and a distributed controller architecture for a campus with intermittent WAN links to the data center. Which consideration is most relevant?

  1. The color scheme of the management dashboard
  2. Whether local survivability is needed at each site when the WAN is unavailable Correct answer.
  3. The type of ceiling mounts used for APs
  4. The number of SSIDs on the guest network

Explanation

Architecture selection must account for WAN reliability and whether each site needs to keep serving clients if connectivity to a central controller is lost. SSID counts, mounting hardware, and dashboard aesthetics do not determine control-plane placement. Survivability requirements often favor local or distributed control.

Question 23Design Fundamentals and Methodology

Which practice best ensures that a WLAN design remains maintainable after handover to operations?

  1. Keeping design decisions undocumented to allow flexibility
  2. Deleting the requirements specification after go-live
  3. Producing as-built documentation with diagrams, configurations, and design rationale Correct answer.
  4. Relying solely on the original installer's memory

Explanation

As-built documentation captures the deployed state and the reasoning behind design choices, enabling operations to troubleshoot and evolve the network. Undocumented decisions, reliance on memory, and discarding requirements all undermine maintainability. Documentation is a core deliverable of the methodology.

Question 24Design Fundamentals and Methodology

A design must support location services for asset tracking. Which design element most directly enables accurate location?

  1. Using the widest possible channels
  2. Enabling band steering on all SSIDs
  3. Adequate AP density and known AP placement coordinates in the location engine Correct answer.
  4. Disabling 802.11k and 802.11v

Explanation

Location accuracy depends on sufficient AP density and accurate AP placement data configured in the location engine. Band steering, channel width, and disabling roaming assistance do not improve location accuracy. Location design is treated as a distinct requirement within the RF plan.

Question 25Design Fundamentals and Methodology

During a design review, an engineer notes that the proposed AP count meets coverage targets but not the stated voice capacity target. What is the most methodologically sound response?

  1. Remove the voice capacity requirement from the document
  2. Add SSIDs until performance improves
  3. Approve the design because coverage targets are met
  4. Revisit the capacity requirement and adjust AP density and channel reuse, then re-run the design Correct answer.

Explanation

When a design fails any documented requirement, the methodology requires revising the design rather than waiving the requirement. Capacity shortfalls are addressed through AP density and channel reuse changes followed by re-validation. Approving a non-compliant design or altering requirements to fit the design inverts the process.

Question 26Design Fundamentals and Methodology

Which document is produced early in a WLAN design project to capture business drivers, constraints, and measurable success criteria before any RF work begins?

  1. The post-deployment validation report
  2. The bill of materials
  3. The requirements document Correct answer.
  4. The AP configuration template

Explanation

Requirements gathering precedes all technical design work and records business drivers, constraints, and measurable acceptance criteria. Later artifacts such as the BOM and validation report depend on those agreed requirements.

Question 27Design Fundamentals and Methodology

Which activity belongs to the predictive (planning) phase rather than the post-deployment phase of a WLAN project?

  1. Comparing measured throughput against acceptance criteria
  2. Walking the floor with a laptop to record measured RSSI
  3. Collecting client association logs from the live controller
  4. Simulating AP placement against a floor plan to estimate coverage Correct answer.

Explanation

Predictive design uses a model of the environment and simulated AP placement to estimate coverage before hardware is installed. The other activities all require a live or installed network and therefore belong to verification or validation.

Question 28Design Fundamentals and Methodology

In a WLAN design methodology, which statement best captures the purpose of the design phase itself?

  1. It defines the support contract and escalation paths
  2. It translates agreed requirements into a documented technical solution Correct answer.
  3. It proves that the installed network meets the customer's business goals
  4. It records the as-built configuration of every access point

Explanation

The design phase converts validated requirements into a technical solution that can be implemented and later verified. Proving business outcomes is validation, and as-built records come after implementation.

Question 29Design Fundamentals and Methodology

A retail chain wants a repeatable WLAN standard for 200 similar stores. Which design approach best fits this requirement?

  1. A unique bespoke design for each individual store
  2. A single flat design with maximum AP density everywhere
  3. A reference design with a small set of store-size profiles Correct answer.
  4. An ad hoc design created during each store's installation

Explanation

A reference design plus size-based profiles gives consistency and repeatability while scaling the design to each store's actual size. Bespoke or ad hoc designs per site increase cost and inconsistency, and uniform maximum density over-provisions.

Question 30Design Fundamentals and Methodology

Which design artifact typically defines the physical location, mounting height, and orientation of each access point?

  1. The guest onboarding workflow
  2. The change management procedure
  3. The AP placement plan Correct answer.
  4. The IP addressing scheme

Explanation

The AP placement plan records where each AP is mounted, at what height, and in what orientation, so installers can reproduce the intended RF design. Addressing, onboarding, and change procedures address other concerns.

Question 31Design Fundamentals and Methodology

A design team is told that the customer's cabling contractor can only deliver Category 5e runs to ceiling locations. Which design decision is most directly affected?

  1. The maximum supported Ethernet speed and PoE budget per AP run Correct answer.
  2. The number of SSIDs broadcast per AP
  3. The roaming standard used by voice clients
  4. The choice of WPA3 versus WPA2 security

Explanation

Cable category constrains the achievable link speed and power delivery over a run, which directly affects AP model selection and PoE budgeting. Security, SSID count, and roaming behavior are independent of cable category.

Question 32Design Fundamentals and Methodology

When writing a coverage requirement for a design document, which formulation is most useful to the engineer who must verify it later?

  1. A statement that coverage should be good throughout the building
  2. A target that the network should feel fast in open areas
  3. A measurable signal threshold at a defined percentage of locations in a named area Correct answer.
  4. A note that users should not complain about connectivity

Explanation

Verifiable requirements state a measurable threshold, a spatial scope, and a success proportion so results can be tested objectively. Subjective statements cannot be validated consistently.

Question 33Design Fundamentals and Methodology

During design, an engineer must decide how clients will be segmented so that guest traffic cannot reach internal servers. Which design element primarily enforces this?

  1. VLAN and policy design mapped to SSIDs Correct answer.
  2. Channel plan and transmit power settings
  3. Antenna downtilt on directional APs
  4. AP mounting height and orientation

Explanation

Segmentation is enforced logically through VLANs and the security policies applied per SSID or role. Channel plans, mounting, and antenna tilt affect RF behavior, not traffic separation.

Question 34Design Fundamentals and Methodology

A customer insists on a design that must survive the loss of any single distribution switch. Which design principle does this requirement express?

  1. Centralized authentication only
  2. Redundancy with no single point of failure Correct answer.
  3. Maximum throughput via channel bonding
  4. Least-cost component selection

Explanation

Surviving the loss of any one component is the definition of eliminating single points of failure through redundancy. Channel bonding, cost minimization, and authentication placement do not address component failure tolerance.

Question 35Design Fundamentals and Methodology

A design review finds that the proposed solution meets current requirements but leaves no documented path for adding capacity later. Which design principle is most clearly missing?

  1. Scalability planning Correct answer.
  2. Security hardening
  3. Regulatory compliance
  4. Cable management

Explanation

Scalability planning documents how the design can grow to meet future demand without rework. Security, compliance, and cable management are separate quality attributes not described by the finding.

Question 36Design Fundamentals and Methodology

Which pair correctly distinguishes verification from validation in a WLAN project?

  1. Verification checks fitness for use; validation checks the build against the specification
  2. Verification applies to security only; validation applies to RF coverage only
  3. Verification is performed only before installation; validation is performed only during installation
  4. Verification checks the build against the design specification; validation checks fitness for the customer's intended use Correct answer.

Explanation

Verification confirms the implementation matches the documented design, while validation confirms the solution actually satisfies the customer's business and usage needs. The two are complementary and both occur after implementation.

Question 37Design Fundamentals and Methodology

A design team must decide whether to design for 5 GHz only or for dual-band clients in an older building with many legacy devices. Which consideration should drive the decision?

  1. The number of APs the budget allows
  2. The preferred color scheme of the floor plans
  3. The vendor's marketing material for its newest AP
  4. The measured or documented mix of client capabilities in the environment Correct answer.

Explanation

Band strategy must follow the actual client population, since legacy 2.4 GHz-only devices cannot join a 5 GHz-only design. Budget, floor plan aesthetics, and marketing material do not describe client capability.

Question 38Design Fundamentals and Methodology

A design document specifies an AP density that satisfies capacity but the customer's budget only funds two-thirds of the APs. What is the most appropriate design methodology response?

  1. Remove the capacity requirement from the document to match the budget
  2. Deliver the full design and let the customer discover the shortfall at installation
  3. Document the gap and present options that trade coverage, capacity, or cost against the stated requirements Correct answer.
  4. Silently reduce the AP count and keep the original requirements unchanged

Explanation

Sound methodology requires that conflicts between requirements and constraints be surfaced explicitly, with documented trade-offs for the customer to decide. Silent reductions, surprises at installation, and rewriting requirements all undermine the process.

Question 39Design Fundamentals and Methodology

An engineer is choosing between designing for a 25 percent channel utilization target and a 50 percent target in an open-plan office. Which reasoning best reflects sound design methodology?

  1. Utilization targets are irrelevant because only RSSI matters in design
  2. A higher utilization target always improves user experience because it uses spectrum efficiently
  3. The target should be set to whatever the current network already shows
  4. A lower utilization target preserves headroom for bursty traffic and future growth at the cost of more APs Correct answer.

Explanation

Designing to a lower utilization ceiling leaves airtime headroom for bursts and growth, trading against additional infrastructure. Higher targets risk congestion, RSSI alone is insufficient, and copying current values does not establish a design target.

Question 40Design Fundamentals and Methodology

Which input most directly determines whether a proposed WLAN design can be implemented in a leased office space?

  1. The choice of RADIUS vendor
  2. The number of VLANs in the design
  3. The preferred SSID naming convention
  4. Landlord and building constraints on cabling and equipment mounting Correct answer.

Explanation

Physical implementation in leased space depends on what the building permits for cabling routes and equipment mounting. Naming conventions, authentication vendor choice, and VLAN counts are logical decisions unaffected by lease terms.

Question 41Campus Wired Network Design

In a typical Aruba campus design, which role does an Aruba Mobility Conductor (formerly Mobility Master) perform?

  1. It forwards all user data traffic between access switches
  2. It centrally manages and orchestrates the managed controllers and gateways Correct answer.
  3. It acts as the DHCP and DNS server for the campus
  4. It provides the physical PoE power to access points

Explanation

The Mobility Conductor is a management and orchestration plane that configures and monitors managed devices; it does not sit in the user data path. Data forwarding and PoE are handled by other components such as gateways, switches, and APs.

Question 42Campus Wired Network Design

Which Aruba solution is designed to provide a single management and policy framework across wired and wireless campus access?

  1. Aruba AirWave only
  2. Aruba Central with ArubaOS-CX switching Correct answer.
  3. Aruba ClearPass only
  4. Aruba Instant On

Explanation

Aruba Central combined with ArubaOS-CX switches delivers unified wired and wireless management and consistent policy enforcement. ClearPass provides NAC/RADIUS, AirWave is legacy management, and Instant On targets small business.

Question 43Campus Wired Network Design

When designing a two-tier campus LAN, what is the primary function of the access layer?

  1. Connecting end devices such as APs, phones, and PCs to the network Correct answer.
  2. Providing WAN edge connectivity to the internet
  3. Performing inter-VLAN routing for the entire campus
  4. Hosting the centralized management controller cluster

Explanation

The access layer provides the physical and logical connection point for end devices and enforces port-level policy. Routing, WAN edge, and management functions reside at other layers or dedicated devices.

Question 44Campus Wired Network Design

In ArubaOS-CX VSX, what is the primary purpose of the inter-switch-link (ISL)?

  1. To serve as the OOB management path
  2. To connect the pair to the WAN edge router
  3. To synchronize state and carry control and data traffic between the two VSX peers Correct answer.
  4. To provide PoE power between the two switches

Explanation

The ISL is the dedicated link that carries synchronization and traffic between VSX peers so they act as one logical device. It is not a PoE, WAN, or out-of-band management link.

Question 45Campus Wired Network Design

In a VSX pair, what is the role of the keepalive link?

  1. It distributes routing updates to downstream access switches
  2. It provides redundant power to the peer switch
  3. It detects peer liveness to prevent a split-brain condition when the ISL fails Correct answer.
  4. It carries all user data traffic between the peers

Explanation

The keepalive link is a separate path used to verify peer health so both switches do not incorrectly assume the primary role if the ISL fails. It does not carry user data or power.

Question 46Campus Wired Network Design

Which ArubaOS-CX feature allows a switch to route traffic between VLANs at wire speed without sending traffic to an external router?

  1. Static inter-VLAN routing with SVIs Correct answer.
  2. Link Aggregation Control Protocol
  3. Spanning Tree Protocol
  4. Port-based VLAN isolation

Explanation

Switch virtual interfaces (SVIs) let a Layer 3 switch route between VLANs locally at wire speed. STP and LACP are Layer 2 functions, and VLAN isolation prevents rather than enables routing.

Question 47Campus Wired Network Design

A designer needs redundant default gateway service for a VLAN across a VSX pair. Which approach provides first-hop redundancy with active-active forwarding?

  1. A single SVI on one peer only
  2. Static routes pointing to one peer
  3. VRRP with the backup peer shut down
  4. VSX with an active-active SVI and a virtual MAC shared by both peers Correct answer.

Explanation

VSX active-active SVIs share a virtual MAC so both peers forward for the same gateway, providing redundancy and load sharing. Single-peer SVIs, disabled backups, and static routes to one peer lack active-active redundancy.

Question 48Campus Wired Network Design

Which protocol should be used to bundle multiple physical links between an ArubaOS-CX switch and a server for increased bandwidth and redundancy?

  1. LLDP
  2. OSPF
  3. LACP Correct answer.
  4. STP

Explanation

LACP dynamically negotiates and maintains a link aggregation group, providing bandwidth aggregation and redundancy. STP, OSPF, and LLDP serve different purposes.

Question 49Campus Wired Network Design

In a campus design, what is the recommended purpose of an out-of-band management network?

  1. To carry user application traffic during peak hours
  2. To provide dedicated administrative access independent of the production data path Correct answer.
  3. To serve as the primary internet gateway
  4. To provide PoE to access points

Explanation

An OOB management network gives administrators a separate path to devices so management remains available even if production forwarding fails. It is not for user traffic, PoE, or internet access.

Question 50Campus Wired Network Design

Which Aruba product provides centralized RADIUS, TACACS+, and role-based network access control for a campus?

  1. ClearPass Policy Manager Correct answer.
  2. Mobility Conductor
  3. ArubaOS-CX
  4. AirWave

Explanation

ClearPass Policy Manager delivers AAA services and role-based policy enforcement for wired and wireless access. The other products handle management, monitoring, or switching.