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This option proposes: Trace ACL rule matching and interface direction before broadening a security filter that drops legitimate traffic. It addresses the different topic ACL traffic filter placement and rule order, not the directly tested SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

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 SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

This option proposes: Configure DHCP relay to forward broadcast client discovery toward a reachable server and preserve the correct client-subnet context. It addresses the different topic DHCP relay across a routed user VLAN, not the directly tested SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

This option proposes: An ABR can summarize inter-area routes and an ASBR can summarize redistributed external routes; aggregation reduces route detail but can hide component failures or create blackholes without safeguards. It addresses the different topic OSPF summarization at ABR and ASBR, not the directly tested SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

This option proposes: DHCP clients initially discover servers using local broadcasts, which are not ordinarily routed; a DHCP relay supplies an appropriate relay address and forwards requests so the server can select the correct address pool. It addresses the different topic DHCP relay across a routed user VLAN, not the directly tested SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

This option proposes: IGMP reports express receiver interest in multicast groups and a querier maintains group membership state; without appropriate reports or queries a router can age out forwarding toward a segment. It addresses the different topic IGMP querier membership reports and group timeout, not the directly tested SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

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 SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

This option proposes: Inspect classifier match counters, behavior actions, traffic-policy associations, interface attachment and ingress/egress direction. It addresses the different topic Huawei MQC traffic classification and behavior binding, not the directly tested SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

This option proposes: Review the monitored uplink state, tracked priority decrement, master/backup advertisements, preemption settings and return-path reachability. It addresses the different topic VRRP interface tracking and controlled preemption, not the directly tested SNMP manager polling traps and authenticated operation failure in the stated incident (An operations team migrates to SNMPv3 authPriv and old unauthenticated monitors fail until the correct user security and access settings are deployed.).

This option proposes: Diagnose outbound path choice across iBGP speakers using locally distributed LOCAL_PREF values. It addresses the different topic BGP LOCAL_PREF within one autonomous system, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

This option proposes: Assess fast roaming within and between AP coverage cells using the configured mobility relationship and authentication requirements. 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 new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

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 Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

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 Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

This option proposes: Redistributing between routing protocols can create route feedback, suboptimal preference or loops unless policies identify origins, limit permitted prefixes and use suitable tagging or filtering. It addresses the different topic Route redistribution feedback loops and route tags, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

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 Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

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 new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

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 new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

This option proposes: Compare traffic patterns, device role, access-layer services, user or workload segmentation, resiliency goals and the underlying control-plane topology. 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 new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

That option concerns IPv6 SLAAC RA prefix and duplicate address detection. That follows from the targeted 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 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 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: Validate physical stack links, member roles and split-brain safeguards before considering a multi-switch logical chassis redundant. It addresses the different topic Switch stacking clustering and split-brain risk, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

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 new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.). 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: Check VRRP virtual IP and virtual MAC behavior while troubleshooting hosts that retain a stale default-gateway neighbor entry after failover. It addresses the different topic VRRP virtual MAC and endpoint ARP continuity, not the directly tested Large campus WLAN AC AP and CAPWAP architecture failure in the stated incident (A new floor AP powers on and advertises a provisioning SSID but cannot register with the AC because its management VLAN does not reach the controller.).

This option proposes: Calculate or verify the practical failure-detection threshold from BFD transmit intervals, advertised receive intervals and the detect multiplier. It addresses the different topic BFD detection multiplier and negotiated timers, 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: 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 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: 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 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: In IS-IS, level-1 routers exchange area-local routes while level-2 routers connect areas; an L1/L2 router can provide an appropriate exit and the attached indication informs L1 routing behavior. It addresses the different topic IS-IS level one versus level two reachability, 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: 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 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: 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 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: 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.).