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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.).

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

That option concerns Network device AAA role SSH and management-plane protection. That follows from the targeted Recommended action: Validate a wireless user VLAN pool and its DHCP scope availability when client addressing becomes uneven or fails under density.

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 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: Differentiate SNMP manager polling from unsolicited notifications, and protect network management using supported SNMPv3 access controls. It addresses the different topic SNMP manager polling traps and authenticated operation, 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: Diagnose firewall traffic by checking stateful session records and security-zone policy rather than treating every permitted ACL packet as an established connection. It addresses the different topic Stateful firewall sessions versus basic packet ACL filtering, 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: Verify NSSA area behavior and type 7-to-type 5 translation when redistributing an external prefix inside a non-backbone area. It addresses the different topic NSSA type seven translation and default routing, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

This option proposes: Validate a wireless user VLAN pool and its DHCP scope availability when client addressing becomes uneven or fails under density. It addresses the different topic WLAN VLAN pools and DHCP address scopes, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

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 Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

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 Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

This option proposes: BFD exchanges lightweight control packets to test bidirectional forwarding paths and can notify registered clients such as routing processes; it is not itself a route-distribution protocol or a guarantee of link-physical failure. It addresses the different topic BFD rapid session detection and routing protocol association, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

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 Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

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 Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

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 Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

This option proposes: Inspect route-reflector client configuration, ORIGINATOR_ID, CLUSTER_LIST and resulting prefixes at different iBGP clients. It addresses the different topic BGP route reflector and cluster loop prevention, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (A voice handset crosses two campus floors and experiences long audio gaps because neighboring APs do not share compatible mobility or security settings.).

That option concerns WLAN controller redundancy and NAC integration. That follows from the targeted action: Assess fast roaming within and between AP coverage cells using the configured mobility relationship and authentication requirements.

That option concerns Campus design versus data center fabric operational boundaries. That follows from the targeted action: Assess fast roaming within and between AP coverage cells using the configured mobility relationship and authentication requirements.

That option concerns WLAN VLAN pools and DHCP address scopes. That follows from the targeted action: Assess fast roaming within and between AP coverage cells using the configured mobility relationship and authentication requirements.

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 Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

This option proposes: Validate a wireless user VLAN pool and its DHCP scope availability when client addressing becomes uneven or fails under density. It addresses the different topic WLAN VLAN pools and DHCP address scopes, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

This option proposes: Design mutual route redistribution to prevent reimporting the same routes and changing their metrics repeatedly. It addresses the different topic Route redistribution feedback loops and route tags, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

This option proposes: Large WLAN deployments can distribute users among VLANs with a VLAN pool, but every selected VLAN still needs the correct gateway, DHCP scope and forwarding path to support client sessions. It addresses the different topic WLAN VLAN pools and DHCP address scopes, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

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 Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

This option proposes: BGP communities carry policy markers that can be matched by participating peers, but the markers alone do not enforce filtering unless suitable route-policy rules recognize and act on them. It addresses the different topic BGP community tagging and route-policy control, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

This option proposes: Compare each candidate path's per-interface costs, SPF route metrics, topology database and resulting next-hop entries. It addresses the different topic OSPF SPF calculation and interface cost changes, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

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 Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

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 Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.).

That option concerns WLAN controller redundancy and NAC integration. That follows from the targeted Recommended action: Assess fast roaming within and between AP coverage cells using the configured mobility relationship and authentication requirements.

That option concerns Large campus WLAN AC AP and CAPWAP architecture. That follows from the targeted Recommended action: Assess fast roaming within and between AP coverage cells using the configured mobility relationship and authentication requirements.

This option proposes: Internal routers prefer the intended egress path while the preference stays within the correct autonomous system boundary. It addresses the different topic BGP LOCAL_PREF within one autonomous system, not the directly tested Wireless roaming mobility and session continuity failure in the stated incident (An engineer claims an SSID's roaming design is successful despite every client being forced to obtain a new DHCP lease whenever it changes AP.). The better discriminating check for this case is: Review the client's roam event timestamps, candidate AP signal conditions, reassociation/authentication records and address or session continuity. The targeted correction is: Assess fast roaming within and between AP coverage cells using the configured mobility relationship and authentication requirements.