Cisco 300-420 Exam Dumps, Practice Test Questions

That hazard arises in a separate case: A campus has a fabric border but its external firewall cannot distinguish multiple endpoint VNs leaving the fabric. 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: Fabric edge nodes encapsulate packets, but the underlay path MTU is too small for added VXLAN overhead. It is not the failure mode evidenced here.

That hazard arises in a separate case: A remote branch uses an OSPF stub area but a design change introduces an ASBR that must redistribute external routes within it. 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 campus OSPF area 0 is split into disconnected islands connected only by another area; route distribution is unstable. It is not the failure mode evidenced here.

That hazard arises in a separate case: A campus uses DSCP EF for voice signaling, voice media, and backup traffic, causing priority queue overload. It is not the failure mode evidenced here.

That hazard arises in a separate case: A campus QoS policy gives low priority to routing keepalives and network monitoring, and routing adjacencies flap during congestion. It is not the failure mode evidenced here.

That hazard arises in a separate case: A branch QoS policy matches all TCP 443 traffic as video, including large software downloads. It is not the failure mode evidenced here.

That hazard arises in a separate case: A customer rents virtual machines from a provider and must patch their operating systems, but procurement classifies the service as SaaS. It is not the failure mode evidenced here.

That hazard arises in a separate case: A company needs private predictable cloud connectivity to two regions but its design considers only commodity internet VPNs. It is not the failure mode evidenced here.

That hazard arises in a separate case: A multivendor enterprise wants one consistent YANG representation for interface operational counters but each platform exposes vendor-specific native trees. It is not the failure mode evidenced here.

That hazard arises in a separate case: Two industrial sites require transparent delivery of a small set of Ethernet services and reject routing between their private LANs. It is not the failure mode evidenced here.

That hazard arises in a separate case: A lab requires a routed overlay carrying multicast between sites but encryption is not part of the GRE service itself. 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: 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 design extends SDA fabric across buildings on a WAN with 1500-byte MTU and assumes local campus performance will continue unchanged. It is not the failure mode evidenced here.

That hazard arises in a separate case: A multicampus network has two equal-cost paths but the design assumes packets always alternate evenly across every individual packet. It is not the failure mode evidenced here.

That hazard arises in a separate case: An OSPF deployment puts all 600 remote access switches into area 0 and floods changes to every site. It is not the failure mode evidenced here.

That hazard arises in a separate case: Headquarters supports IPv4 but users now require IPv6 applications without losing legacy IPv4 services. It is not the failure mode evidenced here.

That hazard arises in a separate case: A new IPv6-only client subnet must access a legacy IPv4-only web endpoint through an enterprise gateway. It is not the failure mode evidenced here.

That hazard arises in a separate case: A 10,000-receiver IPTV deployment requires one-to-many traffic from known sources but still uses RP discovery for each stream. 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: Remote branch routers are managed using the same public internet IP address that exposes a user web service. It is not the failure mode evidenced here.

That hazard arises in a separate case: Backup 5G is installed at a factory but its data plan and APN firewall rules block VPN establishment after primary fiber failure. It is not the failure mode evidenced here.

That hazard arises in a separate case: A disaster-recovery branch depends on a 5G uplink as backup for wired MPLS, but cellular coverage varies by carrier and power failure. It is not the failure mode evidenced here.

That hazard arises in a separate case: An industrial site uses 4G LTE as primary WAN, and its routing team assumes public inbound addresses remain reachable through carrier-grade NAT. It is not the failure mode evidenced here.

That hazard arises in a separate case: A branch router redistributes a static default to the campus IGP without approval, causing arbitrary sites to shift egress. It is not the failure mode evidenced here.

That hazard arises in a separate case: A financial application needs multicast delivery across SDA sites, but all validation has covered unicast endpoint maps only. It is not the failure mode evidenced here.

That hazard arises in a separate case: Branch-specific prefix updates flood every campus router; a proposed aggregate crosses two distinct WAN egress sites. 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 campus advertises a /18 summary into the WAN but has no route for one constituent /24 after a building is decommissioned. It is not the failure mode evidenced here.

That hazard arises in a separate case: An EIGRP core has routes stuck active after one WAN path fails and queries spread into many remote sites. It is not the failure mode evidenced here.