Cisco 300-420 Exam Dumps, Practice Test Questions

That hazard arises in a separate case: An attacker plugs an unmanaged switch into a lobby edge port and advertises superior STP BPDUs, changing the root topology. It is not the failure mode evidenced here.

That hazard arises in a separate case: A guest workstation port can learn hundreds of source MAC addresses because an unmanaged mini-switch is connected behind it. It is not the failure mode evidenced here.

That hazard arises in a separate case: An access switch's BPDU Guard disables a legitimate downstream bridge, and the network team proposes disabling Guard on every port. It is not the failure mode evidenced here.

That hazard arises in a separate case: A service provider backbone runs IS-IS level-1 only across multiple areas, and distant branch routers cannot obtain interarea routes. It is not the failure mode evidenced here.

That hazard arises in a separate case: A remote office assigns clients addresses from 169.254.0.0/16 and expects them to be reachable through a routed WAN. It is not the failure mode evidenced here.

That hazard arises in a separate case: IS-IS adjacencies form between distribution switches, but all internal prefixes are redistributed from OSPF without loop prevention. It is not the failure mode evidenced here.

That hazard arises in a separate case: A provider's remote OOB management path is only 2 Mbps, while the network team sends continuous uncompressed telemetry streams at 5 Mbps. It is not the failure mode evidenced here.

That hazard arises in a separate case: A 20-Mbps backup link replaces a 200-Mbps primary WAN but the shaper keeps its 200-Mbps limit after failover. It is not the failure mode evidenced here.

That hazard arises in a separate case: A new multicast source uses group 232.1.1.1 but the client sends only (*,G) membership instead of a source-specific join. It is not the failure mode evidenced here.

That hazard arises in a separate case: A financial organization leases a transparent point-to-point Ethernet service but requires independent routing at each site. It is not the failure mode evidenced here.

That hazard arises in a separate case: A network wants a hub-and-spoke topology for finance traffic but allows any-to-any policy for all service VPNs. It is not the failure mode evidenced here.

That hazard arises in a separate case: A manufacturing WAN requires multicast distribution but the SD-WAN overlay has only validated unicast OMP reachability. It is not the failure mode evidenced here.

That hazard arises in a separate case: A Cisco-only controller needs platform-specific wireless policies that are not represented by the organization's standard OpenConfig model. It is not the failure mode evidenced here.

That hazard arises in a separate case: An alerting system needs immediate notice of interface administrative status changes but only polls every five minutes. It is not the failure mode evidenced here.

That hazard arises in a separate case: A support dashboard needs regular CPU and interface-rate samples even when values remain unchanged. It is not the failure mode evidenced here.

That hazard arises in a separate case: An SD-Access architect assumes the fabric's LISP control plane transports all user packets like a data-plane tunnel. It is not the failure mode evidenced here.

That hazard arises in a separate case: A new fabric edge is reachable over IP, yet Catalyst Center shows its inventory and provisioning state incomplete. It is not the failure mode evidenced here.

That hazard arises in a separate case: In a planned SD-Access fabric, border nodes can reach edge loopbacks but endpoints fail because the team placed user subnets into the underlay instead of overlay VRFs. It is not the failure mode evidenced here.

That hazard arises in a separate case: Branch A and B redistribute external BGP into OSPF, then advertise resulting routes back into BGP at the opposite edge. It is not the failure mode evidenced here.

That hazard arises in a separate case: An edge router receives a full BGP table where the security policy allows only the provider's approved default. It is not the failure mode evidenced here.

That hazard arises in a separate case: A branch EIGRP router advertises remote routes back into its hub and occasionally becomes a transit path between hubs. It is not the failure mode evidenced here.

That hazard arises in a separate case: A branch uses IPsec overlay on broadband with 1400-byte effective MTU, but an application sends 1500-byte DF-set packets and stalls. It is not the failure mode evidenced here.

That hazard arises in a separate case: A WAN edge has hundreds of VPN prefixes and growing TLOC paths; an all-to-all overlay approaches its platform session capacity. It is not the failure mode evidenced here.

That hazard arises in a separate case: An organization needs any-to-any group-encrypted private WAN traffic but the new design proposes a traditional hub-and-spoke IPsec overlay with hub hairpins. It is not the failure mode evidenced here.

That hazard arises in a separate case: A provider's remote OOB management path is only 2 Mbps, while the network team sends continuous uncompressed telemetry streams at 5 Mbps. It is not the failure mode evidenced here.

That hazard arises in a separate case: A network architect assumes assigning DSCP CS6 to user browsing guarantees faster internet service from a provider that resets all DSCP. It is not the failure mode evidenced here.

That hazard arises in a separate case: Two sites use different DSCP mappings for the same video stream and one class is downgraded at the carrier boundary. It is not the failure mode evidenced here.

That hazard arises in a separate case: A new campus design requires maintaining service during both one uplink failure and one planned software upgrade. It is not the failure mode evidenced here.

That hazard arises in a separate case: A branch aggregation point has both IS-IS and OSPF neighbors with multiple equal-cost exits; traffic unexpectedly hairpins through a data center. It is not the failure mode evidenced here.

That hazard arises in a separate case: Campus routers detect a fiber break only after long OSPF dead timers, missing a strict voice recovery target. It is not the failure mode evidenced here.

That hazard relates to another condition: A provider delegation contains 2001:db8:4200::/48 and the design requires 256 independent /64 LANs across 16 branches. It is not the direct risk evidenced by this case.

That hazard arises in a separate case: An organization needs to reach an IPv6 island over a provider network that carries IPv4 only for the next year. It is not the failure mode evidenced here.

That hazard arises in a separate case: An edge router receives a full BGP table where the security policy allows only the provider's approved default. It is not the failure mode evidenced here.