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This option proposes: Compare WLAN service templates, VLAN pool membership and assignment method, gateway/SVI, relay configuration and per-VLAN available leases. It addresses the different topic WLAN VLAN pools and DHCP address scopes, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A campus migrates a WLAN from centralized data forwarding to local forwarding, yet switches are missing the new client VLAN trunks.).

This option proposes: Review the client's roam event timestamps, candidate AP signal conditions, reassociation/authentication records and address or session continuity. It addresses the different topic Wireless roaming mobility and session continuity, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A campus migrates a WLAN from centralized data forwarding to local forwarding, yet switches are missing the new client VLAN trunks.).

This option proposes: Inspect candidate routes' neighboring AS, MED values, other higher-priority attributes and local comparison configuration. It addresses the different topic BGP MED interpretation between neighboring autonomous systems, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A campus migrates a WLAN from centralized data forwarding to local forwarding, yet switches are missing the new client VLAN trunks.).

That option concerns IS-IS LSP synchronization using CSNP and PSNP. That follows from the targeted Recommended action: Trace an enterprise wireless AP's registration to its access controller and the separation of management from user traffic in supported forwarding modes.

That option concerns WLAN controller redundancy and NAC integration. That follows from the targeted Recommended action: Trace an enterprise wireless AP's registration to its access controller and the separation of management from user traffic in supported forwarding modes.

That option concerns WLAN VLAN pools and DHCP address scopes. That follows from the targeted Recommended action: Trace an enterprise wireless AP's registration to its access controller and the separation of management from user traffic in supported forwarding modes.

This option proposes: Compare WLAN service templates, VLAN pool membership and assignment method, gateway/SVI, relay configuration and per-VLAN available leases. It addresses the different topic WLAN VLAN pools and DHCP address scopes, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A campus migrates a WLAN from centralized data forwarding to local forwarding, yet switches are missing the new client VLAN trunks.). The better discriminating check for this case is: Inspect AP discovery method, controller address reachability, CAPWAP control state, authorized AP inventory and configured service traffic forwarding mode.

This option proposes: Use Bidirectional Forwarding Detection to provide rapid validated failure indications to a supported routing or redundancy protocol. It addresses the different topic BFD rapid session detection and routing protocol association, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A campus migrates a WLAN from centralized data forwarding to local forwarding, yet switches are missing the new client VLAN trunks.).

This option proposes: Choose the appropriate enterprise datacom architecture for a campus user edge versus a scalable data-center fabric before selecting a particular routing or switching feature. It addresses the different topic Campus design versus data center fabric operational boundaries, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A campus migrates a WLAN from centralized data forwarding to local forwarding, yet switches are missing the new client VLAN trunks.).

This option proposes: Check IS-IS level-1-to-level-2 route leaking and the overload bit before selecting a device as a transit path. It addresses the different topic IS-IS routing leakage and overload bit, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Validate resilient AC roles and per-user access decisions when WLAN controller failure or endpoint authorization affects service. It addresses the different topic WLAN controller redundancy and NAC integration, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Trace an enterprise wireless AP's registration to its access controller and the separation of management from user traffic in supported forwarding modes. It addresses the different topic Large campus WLAN AC AP and CAPWAP architecture, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: In controller-managed WLANs an AP typically discovers and establishes control communication with the AC using CAPWAP, while local or centralized data forwarding depends on the chosen design and correct VLAN mapping. It addresses the different topic Large campus WLAN AC AP and CAPWAP architecture, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Enterprise WLAN high availability requires compatible AP fallback and controller state recovery, while network access control distinguishes authorized client roles and can dynamically assign VLAN or policy based on credentials and posture. It addresses the different topic WLAN controller redundancy and NAC integration, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: The IS-IS designated intermediate system generates pseudonode LSP information for a broadcast LAN, and IS-IS does not create an OSPF-style backup designated intermediate system for the same segment. It addresses the different topic IS-IS designated intermediate system and pseudonode, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Review the client's roam event timestamps, candidate AP signal conditions, reassociation/authentication records and address or session continuity. It addresses the different topic Wireless roaming mobility and session continuity, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Inspect AP discovery method, controller address reachability, CAPWAP control state, authorized AP inventory and configured service traffic forwarding mode. It addresses the different topic Large campus WLAN AC AP and CAPWAP architecture, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Compare candidate route validity, policy preferences, AS_PATH lengths, origins, MED, eBGP/iBGP learning mode and relevant platform-specific tie-break rules. It addresses the different topic BGP route preference sequence and policy precedence, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

That option concerns WLAN controller redundancy and NAC integration. That follows from the targeted action: Validate a wireless user VLAN pool and its DHCP scope availability when client addressing becomes uneven or fails under density.

That option concerns Large campus WLAN AC AP and CAPWAP architecture. That follows from the targeted action: Validate a wireless user VLAN pool and its DHCP scope availability when client addressing becomes uneven or fails under density.

That option concerns MSTP region and VLAN-to-instance mappings. That follows from the targeted action: Validate a wireless user VLAN pool and its DHCP scope availability when client addressing becomes uneven or fails under density.

This option proposes: Trace IS-IS link-state synchronization through LSP sequence numbers and summary or acknowledgment PDUs when databases differ. It addresses the different topic IS-IS LSP synchronization using CSNP and PSNP, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Identify OSPF LSA types and their flooding scope before diagnosing missing intra-area or inter-area destinations. It addresses the different topic OSPF router network and summary LSA scope, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.).

This option proposes: Inspect AP discovery method, controller address reachability, CAPWAP control state, authorized AP inventory and configured service traffic forwarding mode. It addresses the different topic Large campus WLAN AC AP and CAPWAP architecture, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A crowded convention WLAN uses a pool of four user VLANs, but one VLAN lacks a DHCP helper so a portion of clients cannot get addresses.). The better discriminating check for this case is: Compare WLAN service templates, VLAN pool membership and assignment method, gateway/SVI, relay configuration and per-VLAN available leases.

This option proposes: Validate resilient AC roles and per-user access decisions when WLAN controller failure or endpoint authorization affects service. It addresses the different topic WLAN controller redundancy and NAC integration, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: Trace an enterprise wireless AP's registration to its access controller and the separation of management from user traffic in supported forwarding modes. It addresses the different topic Large campus WLAN AC AP and CAPWAP architecture, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: Choose the appropriate enterprise datacom architecture for a campus user edge versus a scalable data-center fabric before selecting a particular routing or switching feature. It addresses the different topic Campus design versus data center fabric operational boundaries, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: VRRP provides a shared virtual default-gateway identity, generally electing a higher-priority router as master while tie-breaking rules and address-owner behavior are relevant; hosts use the virtual address rather than the physical router selected by a static setting. It addresses the different topic VRRP master election priority and tie breaks, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: WLAN roaming is a client transition between APs, and preserving service depends on consistent SSID/security configuration, mobility coordination and the chosen network architecture, not simply RF overlap. It addresses the different topic Wireless roaming mobility and session continuity, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: Enterprise WLAN high availability requires compatible AP fallback and controller state recovery, while network access control distinguishes authorized client roles and can dynamically assign VLAN or policy based on credentials and posture. It addresses the different topic WLAN controller redundancy and NAC integration, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: Review the client's roam event timestamps, candidate AP signal conditions, reassociation/authentication records and address or session continuity. It addresses the different topic Wireless roaming mobility and session continuity, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: Inspect the client's DHCP Discover/Offer exchange, relay agent address, server route, configured pool and interface addressing. It addresses the different topic DHCP relay across a routed user VLAN, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).

This option proposes: Inspect primary/backup controller registrations, AP failover behavior, RADIUS/802.1X results, user authorization attributes and policy applied to a test client. It addresses the different topic WLAN controller redundancy and NAC integration, not the directly tested WLAN VLAN pools and DHCP address scopes failure in the stated incident (A campus increases wireless device capacity by creating new address pools but forgets to update the AC's VLAN-pool-to-SSID mapping.).