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Aruba Architect Expert (Written) practice questions

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Question 1Network Architecture and Design Methodology

In a structured network design methodology, what is the primary purpose of the requirements-gathering phase before any topology is proposed?

  1. To produce the final bill of materials for procurement
  2. To configure the initial management VLAN on the core switches
  3. To document business goals, constraints, and technical requirements that will drive design decisions Correct answer.
  4. To select the routing protocol that will be deployed in the core

Explanation

Requirements gathering captures business drivers, constraints, and technical goals so later design choices can be traced back to validated needs. Selecting protocols, hardware, or configurations are downstream activities that should follow, not precede, requirements analysis.

Question 2Network Architecture and Design Methodology

A design team separates the campus network into access, distribution, and core layers. Which design principle does this layering primarily support?

  1. Modularity that contains faults and simplifies growth Correct answer.
  2. Elimination of the need for routing
  3. Encryption of all inter-switch traffic
  4. Centralized single-switch forwarding

Explanation

Hierarchical layering creates modules with defined roles, which limits fault domains, simplifies troubleshooting, and allows each layer to scale independently. Layering does not inherently provide encryption or remove the need for routing.

Question 3Network Architecture and Design Methodology

During design validation, a team compares a proposed design against the documented requirements and finds a gap in redundancy for the WAN edge. What is the most appropriate next step in the methodology?

  1. Proceed to implementation and address the gap during operations
  2. Remove the redundancy requirement from the document
  3. Iterate the design to close the gap, then re-validate against requirements Correct answer.
  4. Escalate to procurement to buy spare hardware without changing the design

Explanation

A validated design methodology treats gaps found in validation as inputs to another design iteration, followed by re-validation. Proceeding with a known gap or altering requirements to match the design defeats the purpose of validation.

Question 4Network Architecture and Design Methodology

Which statement best describes the role of a design document's logical topology diagram?

  1. It shows addressing, routing domains, and functional relationships independent of physical location Correct answer.
  2. It captures the project budget breakdown by phase
  3. It records the physical rack elevations and cable lengths
  4. It lists the serial numbers of deployed equipment

Explanation

A logical topology conveys functional and addressing relationships, such as subnets, routing boundaries, and device roles, abstracted from physical placement. Physical rack layouts, asset serials, and budgets belong in other document types.

Question 5Network Architecture and Design Methodology

A campus design places a single firewall between the core and the data center, and all inter-zone traffic must traverse it. Which design risk does this introduce?

  1. An increase in Layer 2 broadcast domains
  2. A single point of failure and a potential traffic bottleneck Correct answer.
  3. Loss of VLAN tagging on access ports
  4. Inability to use dynamic routing anywhere in the network

Explanation

Concentrating all inter-zone traffic through one device creates both an availability risk and a capacity chokepoint. The other outcomes are unrelated to firewall placement.

Question 6Network Architecture and Design Methodology

What does the concept of 'design for failure' primarily encourage in network architecture?

  1. Assuming components never fail and optimizing for lowest cost
  2. Deploying only a single high-capacity link between sites
  3. Removing monitoring to reduce operational overhead
  4. Building redundancy and graceful degradation so component failures do not cause outages Correct answer.

Explanation

Designing for failure means assuming any component can fail and providing redundancy, fast convergence, and graceful degradation. Ignoring failure modes or removing monitoring contradicts this principle.

Question 7Network Architecture and Design Methodology

A design must support 5,000 wireless clients in a single large auditorium with high-density expectations. Which requirement category should capture the per-client throughput and concurrent association targets?

  1. Naming convention requirements
  2. Regulatory compliance requirements
  3. Physical cabling requirements
  4. Capacity and performance requirements Correct answer.

Explanation

Client density, concurrency, and throughput targets are capacity and performance requirements that drive AP selection and RF design. Compliance, cabling, and naming conventions are separate requirement categories.

Question 8Network Architecture and Design Methodology

In a modular campus design, what is the recommended relationship between the distribution layer and the access layer?

  1. Access switches connect directly to the core to minimize hops
  2. Each access block connects to distribution switches that aggregate and apply policy Correct answer.
  3. Distribution switches connect only to each other in a ring
  4. Access switches bypass distribution and route directly to the WAN edge

Explanation

The distribution layer aggregates access blocks and enforces policy such as routing boundaries and filtering. Bypassing distribution collapses the hierarchy and removes a policy aggregation point.

Question 9Network Architecture and Design Methodology

A network architect is asked to reduce the blast radius of a misconfiguration in a data center fabric. Which design methodology outcome best addresses this?

  1. Increasing the size of a single flat Layer 2 domain
  2. Consolidating all services onto one large switch
  3. Removing all routing boundaries between pods
  4. Defining fault domains and change boundaries per module Correct answer.

Explanation

Explicit fault domains and change boundaries limit how far a misconfiguration or failure can propagate. Larger flat domains and consolidation increase blast radius rather than reduce it.

Question 10Network Architecture and Design Methodology

What is the primary purpose of a design review with peer architects before implementation?

  1. To identify design flaws and gaps through independent scrutiny Correct answer.
  2. To finalize the procurement purchase order
  3. To assign blame for previous outages
  4. To schedule the implementation cutover window

Explanation

A peer design review provides independent technical scrutiny to catch flaws, risks, and unmet requirements before build. It is not a blame exercise, a purchasing step, or a scheduling activity.

Question 11Network Architecture and Design Methodology

A design team must choose between a traditional three-tier campus and a collapsed core for a small branch with fewer than 200 users. Which consideration most strongly favors the collapsed core?

  1. Greater separation between access and core functions
  2. Increased number of policy enforcement points
  3. Higher port density requirements at the core
  4. Reduced device count and cost while retaining adequate hierarchy Correct answer.

Explanation

A collapsed core merges distribution and core functions, reducing device count and cost where scale does not justify full separation. It reduces, rather than increases, policy points and layer separation.

Question 12Network Architecture and Design Methodology

Which artifact most directly communicates to operations staff how traffic should flow between security zones in a proposed design?

  1. A traffic-flow matrix mapping sources, destinations, and permitted services Correct answer.
  2. A rack elevation drawing
  3. A cable schedule
  4. An equipment warranty register

Explanation

A traffic-flow matrix documents which zones and services are allowed to communicate, guiding firewall policy and validation. Rack elevations, cable schedules, and warranty records do not describe logical traffic.

Question 13Network Architecture and Design Methodology

A proposed design places all wireless controllers in a single data center with no local survivability at remote sites. Which requirement is most at risk?

  1. Guest portal branding
  2. Wireless encryption standard compliance
  3. Site survivability during WAN failure Correct answer.
  4. Channel plan reuse across floors

Explanation

Centralizing control without local survivability means a WAN outage can disable wireless at remote sites. Encryption standards, channel reuse, and portal branding are unaffected by controller placement.

Question 14Network Architecture and Design Methodology

What does an 'as-is' versus 'to-be' comparison provide in the design methodology?

  1. A guarantee that no downtime will occur
  2. A final configuration template for all devices
  3. A replacement for the requirements document
  4. A baseline of current state and a target state to guide migration steps Correct answer.

Explanation

Comparing current and target states clarifies the delta the design must address and informs migration planning. It does not guarantee zero downtime, replace requirements, or serve as a configuration template.

Question 15Network Architecture and Design Methodology

A design uses a single OSPF area for the entire enterprise to simplify operations. Which design trade-off should the architect document?

  1. Mandatory use of BGP at the edge
  2. Reduced summarization and larger topology churn scope Correct answer.
  3. Increased need for static routes
  4. Inability to use VLANs

Explanation

A single area limits route summarization and allows topology changes to propagate more widely, which is the key trade-off to document. It does not prevent VLAN use or force static routing or BGP.

Question 16Network Architecture and Design Methodology

Which statement best captures the principle of 'design for manageability'?

  1. Minimizing documentation to reduce overhead
  2. Avoiding monitoring tools to reduce alerts
  3. Maximizing the number of unique device configurations
  4. Standardizing configurations and naming so the network is predictable to operate Correct answer.

Explanation

Manageability comes from standardization, consistent naming, and documentation that make operations predictable and repeatable. Unique configurations and reduced documentation or monitoring increase operational risk.

Question 17Network Architecture and Design Methodology

A design team is evaluating whether to use a spine-leaf fabric for a data center. Which requirement most strongly justifies spine-leaf over a traditional three-tier design?

  1. Elimination of Layer 3 routing
  2. Predictable east-west latency between any two servers Correct answer.
  3. Fewer physical switches in all cases
  4. Reduced need for redundant links

Explanation

Spine-leaf provides consistent hop count and predictable latency between any pair of leaf switches, which suits east-west-heavy traffic. It does not inherently reduce redundancy needs, always use fewer switches, or remove routing.

Question 18Network Architecture and Design Methodology

What is the purpose of defining success criteria during the requirements phase?

  1. To provide measurable targets for validating the completed design Correct answer.
  2. To determine the vendor selection automatically
  3. To fix the project schedule in advance
  4. To replace the need for a design review

Explanation

Success criteria are measurable targets that let the team validate whether the design meets its goals. They complement, rather than replace, reviews and do not automatically select vendors or fix schedules.

Question 19Network Architecture and Design Methodology

A branch design routes all traffic back to a central data center for internet access. Which design concern does this hairpinning introduce?

  1. Guaranteed compliance with data sovereignty
  2. Elimination of the need for local switching
  3. Added latency and WAN capacity consumption Correct answer.
  4. Reduced dependence on the WAN circuit

Explanation

Backhauling branch internet traffic to a central site adds latency and consumes WAN bandwidth that local internet breakout could avoid. It increases WAN dependence and is unrelated to local switching or sovereignty.

Question 20Network Architecture and Design Methodology

Which design technique best limits the scope of a Layer 2 broadcast domain in a large campus?

  1. Connecting all access switches into one flat VLAN
  2. Removing all distribution-layer switches
  3. Using only hubs to connect access switches
  4. Segmenting users into VLANs with Layer 3 boundaries between them Correct answer.

Explanation

VLAN segmentation with Layer 3 boundaries between segments constrains broadcast scope. Flat VLANs, hubs, or removing distribution switches expand broadcast domains rather than limit them.

Question 21Network Architecture and Design Methodology

What does a 'design constraint' represent in the methodology?

  1. A preferred feature that may be included if convenient
  2. A limitation such as budget, legacy equipment, or regulation that the design must respect Correct answer.
  3. A vendor marketing claim
  4. A test case used during validation

Explanation

Constraints are non-negotiable limitations the design must accommodate, such as budget, existing infrastructure, or regulatory mandates. Preferences, test cases, and marketing claims are different concepts.

Question 22Network Architecture and Design Methodology

An architect proposes dual-homed servers connected to two separate access switches that in turn connect to the same single distribution switch. Which resiliency weakness remains?

  1. The access switches cannot forward traffic
  2. The design cannot support VLANs
  3. The single distribution switch is a shared point of failure Correct answer.
  4. The servers lack any redundant NICs

Explanation

Dual-homing to separate access switches only helps if those paths diverge; a shared upstream distribution switch reintroduces a single point of failure. The servers do have redundancy, and the access switches and VLANs function normally.

Question 23Network Architecture and Design Methodology

Which document typically records the rationale behind a specific design decision so future architects understand why an alternative was rejected?

  1. A change management ticket
  2. A device inventory spreadsheet
  3. A cable test report
  4. An architecture decision record Correct answer.

Explanation

Architecture decision records capture the context, decision, and rejected alternatives with rationale. Cable reports, inventories, and change tickets document other aspects and do not preserve design rationale.

Question 24Network Architecture and Design Methodology

A design must accommodate a merger that will double the number of sites within two years. Which design attribute is most important to emphasize?

  1. Scalability through modular, repeatable site designs Correct answer.
  2. Centralizing all services at one site
  3. Maximizing unique per-site configurations
  4. Minimizing documentation for speed

Explanation

Modular, repeatable designs scale by replicating proven building blocks for new sites. Unique configurations and minimal documentation impede growth, and heavy centralization increases risk and latency.

Question 25Network Architecture and Design Methodology

What is the main benefit of validating a design with a proof-of-concept in a lab before full deployment?

  1. Confirming that key technologies and integrations behave as designed under realistic conditions Correct answer.
  2. Replacing the requirements-gathering phase
  3. Guaranteeing production performance at full scale
  4. Eliminating the need for a design document

Explanation

A proof-of-concept validates critical assumptions and integrations in a controlled environment before committing to production. It does not remove documentation needs, guarantee full-scale performance, or substitute for requirements.

Question 26Network Architecture and Design Methodology

Which activity is typically performed first in a structured network design methodology?

  1. Creating a detailed bill of materials
  2. Selecting routing protocols for the proposed topology
  3. Gathering business and technical requirements Correct answer.
  4. Performing a post-implementation audit

Explanation

A structured design methodology begins with requirements gathering to understand business drivers and technical needs. This foundation ensures subsequent design decisions are aligned with actual needs.

Question 27Network Architecture and Design Methodology

In a modular network design, what is the primary purpose of the core layer?

  1. To aggregate access switches within a building
  2. To connect end devices such as printers and workstations
  3. To enforce security policies for end-user traffic
  4. To provide high-speed, resilient transport between distribution modules Correct answer.

Explanation

The core layer is designed for high-speed, low-latency transport and resilience, interconnecting distribution modules without performing policy enforcement or access aggregation.

Question 28Network Architecture and Design Methodology

A network architect is designing a new campus network and must choose between a two-tier collapsed core and a three-tier architecture. The campus has multiple buildings with high port density and a requirement for policy enforcement between buildings. Which design choice is most appropriate?

  1. A three-tier architecture with a dedicated distribution layer for policy enforcement Correct answer.
  2. A two-tier collapsed core with all routing performed at the access layer
  3. A two-tier collapsed core to reduce latency between access and core
  4. A three-tier architecture with policy enforcement pushed to the core layer

Explanation

A three-tier architecture with a dedicated distribution layer allows policy enforcement and aggregation to be handled separately from the core, which is essential for high-density multi-building campuses. The distribution layer provides a natural point for policy and routing boundaries.

Question 29Network Architecture and Design Methodology

During the design of a large enterprise network, the architect must decide how to document the design so that operations staff can understand traffic flow and troubleshooting procedures. Which artifact is most appropriate for this purpose?

  1. A project schedule with milestones
  2. A high-level physical topology diagram
  3. A list of equipment serial numbers
  4. A detailed logical topology diagram with traffic flow annotations Correct answer.

Explanation

A logical topology diagram that includes traffic flow annotations provides operations staff with a clear view of how traffic should traverse the network, aiding in troubleshooting and understanding design intent.

Question 30Network Architecture and Design Methodology

An architect is designing a data center network that must support a large number of east-west traffic flows with low latency and high redundancy. The architect proposes a spine-leaf fabric. Which characteristic of spine-leaf most directly addresses these requirements?

  1. It centralizes all routing at the spine layer to simplify configuration.
  2. It provides multiple equal-cost paths between any two leaf switches. Correct answer.
  3. It relies on Spanning Tree Protocol to prevent loops.
  4. It uses a three-tier hierarchy with a dedicated core layer.

Explanation

Spine-leaf fabrics use a full mesh of links between spines and leaves, creating multiple equal-cost paths that enable low-latency, high-bandwidth east-west traffic and redundancy.

Question 31Campus and Branch Wired/Wireless Design

Which WLAN client behavior is the primary reason Aruba recommends limiting a single broadcast domain to roughly 2,000 clients or fewer in a campus design?

  1. Client roaming between controllers requires every client to share a single VLAN
  2. RADIUS authentication fails when a subnet exceeds 2,000 addresses
  3. Broadcast and multicast traffic plus ARP scale with subnet size and consume airtime and gateway resources Correct answer.
  4. WPA3 key derivation degrades as the number of clients per subnet grows

Explanation

Subnet sizing in campus designs is driven by broadcast/multicast propagation and ARP traffic, which grow with the number of endpoints in the domain and consume both wired and wireless resources. Keeping broadcast domains bounded limits that overhead and simplifies troubleshooting.

Question 32Campus and Branch Wired/Wireless Design

A branch office has 40 wireless clients, two WAN links, and no local Aruba controller. Which deployment model best fits the requirement for local survivability with centralized management?

  1. Standalone autonomous APs configured individually
  2. Aruba gateway or controller-less AP deployment managed by Central Correct answer.
  3. A single Mobility Master with no local forwarding
  4. Aruba Mobility Controller with a local cluster at the branch

Explanation

Small branches typically use gateway or controller-less AP architectures that can be managed centrally while keeping traffic local and surviving WAN loss. This avoids the cost and complexity of a branch controller cluster.

Question 33Campus and Branch Wired/Wireless Design

In an ArubaOS 8 architecture, which component is responsible for maintaining the master configuration database and pushing it to managed devices?

  1. The ClearPass policy server
  2. The AirWave management server
  3. The Mobility Master Correct answer.
  4. The Mobility Controller data plane

Explanation

Mobility Master is the management and configuration layer in ArubaOS 8, holding the master configuration and orchestrating managed devices. Controllers handle the data plane, while AirWave and ClearPass serve monitoring and policy functions respectively.

Question 34Campus and Branch Wired/Wireless Design

Which PoE standard should be specified for an access point that requires up to 45 W over a single Ethernet cable?

  1. 802.3at Type 1
  2. 802.3af
  3. 802.3az
  4. 802.3bt Type 3 Correct answer.

Explanation

802.3bt Type 3 delivers up to 60 W at the PSE and supports loads above the 30 W ceiling of 802.3at. 802.3af and 802.3at Type 1 provide 15.4 W and 15.4 W respectively at the PSE.

Question 35Campus and Branch Wired/Wireless Design

What is the primary purpose of an Aruba Mobility Conductor cluster in a large campus design?

  1. To terminate guest Captive Portal sessions
  2. To provide high availability for the management and configuration plane Correct answer.
  3. To replace the need for redundant uplinks
  4. To forward all client traffic through a central point

Explanation

Clustering the management layer protects configuration and orchestration services from a single node failure. Data forwarding remains distributed across managed devices.

Question 36Campus and Branch Wired/Wireless Design

Which RF design principle best describes the recommended coverage overlap between adjacent 5 GHz cells in a high-density lecture hall?

  1. Approximately 15 to 20 percent overlap at the cell edge Correct answer.
  2. No overlap, with cells sized for maximum data rate
  3. Overlap equal to one full channel width
  4. Full cell overlap so every client sees at least three APs

Explanation

A modest cell-edge overlap of roughly 15 to 20 percent supports seamless roaming while minimizing co-channel interference. Excessive overlap increases contention in high-density areas.

Question 37Campus and Branch Wired/Wireless Design

Which protocol allows an Aruba access point to discover and join a controller across a routed Layer 3 network without broadcasts?

  1. PAPI over UDP with static controller IP configuration or DNS discovery Correct answer.
  2. Spanning Tree Protocol
  3. 802.1X EAP-TLS
  4. LLDP-MED only

Explanation

APs use the Aruba discovery protocol over UDP and can be pointed at controllers via DHCP options, DNS, or static configuration when the controller is on another subnet. This enables Layer 3 adoption across routed campus networks.

Question 38Campus and Branch Wired/Wireless Design

Why does Aruba recommend disabling lower data rates (1, 2, 5.5, and 11 Mbps) on 2.4 GHz in a dense campus?

  1. They prevent 802.11ax operation
  2. They interfere with Bluetooth Low Energy beacons
  3. They consume disproportionate airtime and shrink effective cell size Correct answer.
  4. They are not supported by modern clients

Explanation

Low rates are robust but slow, so a single distant client at 1 Mbps occupies the channel far longer than a client at higher rates. Removing them improves airtime efficiency and encourages clients to roam to closer APs.

Question 39Campus and Branch Wired/Wireless Design

A designer must ensure that voice clients roaming between floors keep their IP address and active call. Which design element is most important?

  1. Consistent Layer 2 mobility with tuned roaming thresholds and 802.11k/v/r support Correct answer.
  2. Forcing all voice clients to 2.4 GHz
  3. A single large VLAN spanning all floors
  4. Disabling 802.11r to avoid key mismatches

Explanation

Seamless voice roaming requires consistent mobility domains, fast roaming assistance, and tuned thresholds so clients move before signal degrades. A single flat VLAN increases broadcast overhead without guaranteeing fast handoff.

Question 40Campus and Branch Wired/Wireless Design

An engineer is designing a branch with a single WAN link and wants guest traffic to egress locally while corporate traffic is tunneled to the data center. Which Aruba feature supports this split?

  1. Controller clustering across the WAN
  2. Local breakout with policy-based routing on the gateway Correct answer.
  3. AirGroup service filtering
  4. Centralized bridging of all SSIDs

Explanation

Local breakout keeps selected traffic at the branch while other traffic is tunneled, preserving WAN capacity and guest experience. Policy-based forwarding decides which traffic follows which path.

Question 41Campus and Branch Wired/Wireless Design

A campus has 1,200 APs across 30 buildings. Which Aruba design choice best reduces the failure domain of a controller outage?

  1. A single Mobility Master with no backup
  2. A single large controller cluster serving all buildings
  3. Multiple smaller clusters with APs grouped by building or floor Correct answer.
  4. Standalone APs in each building

Explanation

Smaller, localized clusters limit the blast radius of a failure and keep traffic paths short. Grouping APs by physical area also simplifies capacity planning and troubleshooting.

Question 42Campus and Branch Wired/Wireless Design

Which statement correctly describes the role of a DMZ in an Aruba campus design with guest access?

  1. It is required for 802.1X authentication of employee devices
  2. It hosts the captive portal and ClearPass so guest traffic never enters the internal corporate VLANs Correct answer.
  3. It replaces the need for firewall policies between guest and corporate networks
  4. It provides PoE to outdoor access points

Explanation

Placing guest-facing services such as captive portal and policy servers in a DMZ isolates untrusted traffic from internal networks. Firewall rules still enforce separation between guest and corporate zones.

Question 43Campus and Branch Wired/Wireless Design

An engineer must verify that a proposed AP placement provides adequate signal at the client cell edge. Which metric is the most direct indicator?

  1. Channel width configured on the AP
  2. Controller CPU utilization
  3. Number of SSIDs broadcast per AP
  4. Received signal strength indicator at the edge of the intended coverage area Correct answer.

Explanation

RSSI at the cell edge directly indicates whether clients at the boundary have sufficient signal to associate and roam. Other metrics describe configuration or device health, not coverage.

Question 44Campus and Branch Wired/Wireless Design

Which Aruba feature allows an AP to continue serving clients with local authentication if the controller becomes unreachable?

  1. Instant or survivable mode with cached credentials Correct answer.
  2. Centralized licensing
  3. AirGroup
  4. Band steering

Explanation

Survivable or instant modes let APs keep serving clients using cached authentication data when the controller is unreachable. This maintains service continuity during WAN or controller outages.

Question 45Campus and Branch Wired/Wireless Design

In a high-density auditorium, which combination best supports many clients per AP without degrading airtime?

  1. Narrow channels, high minimum basic rates, and dense AP placement with band steering Correct answer.
  2. Wide 80 MHz channels on 5 GHz with all legacy rates enabled
  3. A single AP with maximum power to cover the room
  4. 2.4 GHz only with maximum transmit power

Explanation

High density is served by many small cells using narrower channels, raised minimum rates to reduce airtime waste, and steering clients to 5 GHz. Wide channels and high power increase contention.

Question 46Campus and Branch Wired/Wireless Design

Which consideration most affects the choice between tunneled and local (bridge) forwarding for a campus SSID?

  1. The number of SSIDs broadcast by each AP
  2. Whether WPA3 is enabled
  3. The AP model's antenna gain
  4. The need to keep traffic on the local VLAN for latency-sensitive or local-server-bound applications Correct answer.

Explanation

Forwarding mode determines the traffic path; local bridging suits traffic that stays on the local segment, while tunneling centralizes policy and inspection. Application locality and latency drive the decision.

Question 47Campus and Branch Wired/Wireless Design

A designer plans redundant switch uplinks for access switches in a building. Which approach avoids Layer 2 loops while providing fast convergence?

  1. Link aggregation with LACP plus a loop-free topology Correct answer.
  2. Disabling STP on all access ports
  3. Using a single uplink for simplicity
  4. Spanning multiple uplinks in a loop without STP

Explanation

LACP bundles multiple links into one logical link, increasing bandwidth and resilience without creating a loop. Loop prevention remains necessary for any remaining redundant paths.

Question 48Campus and Branch Wired/Wireless Design

Which factor most directly determines the number of APs required for a given floor plan?

  1. The controller model selected
  2. The required client density and per-client throughput, constrained by coverage Correct answer.
  3. The number of SSIDs configured
  4. The DHCP lease duration

Explanation

AP count is driven by capacity requirements (clients and throughput) balanced against coverage needs. SSIDs, controller model, and lease timers do not determine AP quantity.

Question 49Campus and Branch Wired/Wireless Design

Which Aruba design practice best limits broadcast radiation in a large wireless campus?

  1. Using a single VLAN for all wireless clients
  2. Increasing the DHCP lease time to several days
  3. Disabling client isolation
  4. Enabling broadcast filtering and multicast optimization on APs Correct answer.

Explanation

Broadcast and multicast filtering on APs prevents unnecessary frames from being transmitted over the air, preserving airtime. Coupled with proper subnet sizing, this controls broadcast radiation.

Question 50Campus and Branch Wired/Wireless Design

An engineer must design for seamless roaming between two buildings connected by a Layer 3 boundary. Which design element is required?

  1. A single Layer 2 domain stretched across both buildings
  2. Separate SSIDs per building
  3. Disabling 802.11k on all APs
  4. A mobility domain with controllers in both buildings and consistent VLAN mapping Correct answer.

Explanation

Roaming across a Layer 3 boundary requires a mobility domain so client state and VLAN context follow the client. Stretching Layer 2 is one alternative but is not required when mobility is used.