Exam Bundle

That observation verifies ssh source interface routing in a different situation, such as when management SSH works from one site but not another because replies leave through an unintended VRF or source path. For the reported https management instead of http incident at a logistics campus in Rotterdam, the required acceptance evidence is: Web management uses TLS and ordinary HTTP is unavailable or redirected according to approved policy. This other result does not test that condition directly.

That observation verifies ssh rsa key prerequisites in a different situation, such as when a router cannot start the SSH service because it lacks an appropriate host key and required IOS SSH configuration. For the reported https management instead of http incident at a logistics campus in Rotterdam, the required acceptance evidence is: Web management uses TLS and ordinary HTTP is unavailable or redirected according to approved policy. This other result does not test that condition directly.

That observation verifies vty access-class management acl in a different situation, such as when untrusted subnets can open the router's SSH port even though the routing interfaces have unrelated ACLs. For the reported https management instead of http incident at a logistics campus in Rotterdam, the required acceptance evidence is: Web management uses TLS and ordinary HTTP is unavailable or redirected according to approved policy. This other result does not test that condition directly.

That approach is relevant to urpf strict asymmetric routes, such as when legitimate multihomed source traffic is dropped by strict uRPF because the best reverse path uses another interface. That is a different root cause from the extended acl ports fault observed at an industrial switching campus in Hamburg. Applying that approach alone would not establish the required result: The target application flows match their permit entry while other ports remain constrained.

That approach is relevant to urpf loose reachability, such as when loose uRPF is installed on an edge and administrators assume it verifies incoming interface symmetry. That is a different root cause from the extended acl ports fault observed at an industrial switching campus in Hamburg. Applying that approach alone would not establish the required result: The target application flows match their permit entry while other ports remain constrained.

That approach is relevant to acl applied wrong direction, such as when an extended IPv4 ACL correctly describes unwanted inbound traffic but was attached outbound on the wrong router interface. That is a different root cause from the extended acl ports fault observed at an industrial switching campus in Hamburg. Applying that approach alone would not establish the required result: The target application flows match their permit entry while other ports remain constrained.

That observation verifies urpf strict asymmetric routes in a different situation, such as when legitimate multihomed source traffic is dropped by strict uRPF because the best reverse path uses another interface. For the reported extended acl ports incident at an industrial switching campus in Hamburg, the required acceptance evidence is: The target application flows match their permit entry while other ports remain constrained. This other result does not test that condition directly.

That observation verifies acl counter troubleshooting in a different situation, such as when a new permit rule is blamed for a dropped service even though its hit counter never increases. For the reported extended acl ports incident at an industrial switching campus in Hamburg, the required acceptance evidence is: The target application flows match their permit entry while other ports remain constrained. This other result does not test that condition directly.

That observation verifies acl first-match ordering in a different situation, such as when a broad permit appears before a targeted deny, so traffic to a prohibited TCP port passes. For the reported extended acl ports incident at an industrial switching campus in Hamburg, the required acceptance evidence is: The target application flows match their permit entry while other ports remain constrained. This other result does not test that condition directly.

That approach is relevant to bfd transport filtering, such as when an enabled BFD session stays down even though the IGP neighbors can exchange ordinary hello packets. That is a different root cause from the route-map implicit deny fault observed at a manufacturing campus in Austin. Applying that approach alone would not establish the required result: The desired prefixes match explicit permit clauses while explicitly blocked routes remain excluded.

That approach is relevant to route-map deny behavior, such as when an administrator expects a route-map deny clause to set a new metric for a redistributed route. That is a different root cause from the route-map implicit deny fault observed at a manufacturing campus in Austin. Applying that approach alone would not establish the required result: The desired prefixes match explicit permit clauses while explicitly blocked routes remain excluded.

That approach is relevant to prefix-list deny ordering, such as when a prefix list's early broad permit precedes a later deny for an unwanted subnet, which is consequently accepted. That is a different root cause from the route-map implicit deny fault observed at a manufacturing campus in Austin. Applying that approach alone would not establish the required result: The desired prefixes match explicit permit clauses while explicitly blocked routes remain excluded.

That observation verifies route-map sequence numbering in a different situation, such as when a new permit route-map entry is added after a broad permit any; its more-specific set action never runs. For the reported route-map implicit deny incident at a manufacturing campus in Austin, the required acceptance evidence is: The desired prefixes match explicit permit clauses while explicitly blocked routes remain excluded. This other result does not test that condition directly.

That observation verifies connected route redistribution oversight in a different situation, such as when an attached transit network is mistakenly redistributed into an IGP intended only to carry service prefixes. For the reported route-map implicit deny incident at a manufacturing campus in Austin, the required acceptance evidence is: The desired prefixes match explicit permit clauses while explicitly blocked routes remain excluded. This other result does not test that condition directly.

That observation verifies prefix-list exact-length filter in a different situation, such as when a route-map references a prefix list that permits only a /16, while intended /24 components are never matched. For the reported route-map implicit deny incident at a manufacturing campus in Austin, the required acceptance evidence is: The desired prefixes match explicit permit clauses while explicitly blocked routes remain excluded. This other result does not test that condition directly.

That approach is relevant to log device identifier, such as when a multi-router syslog collector cannot distinguish message origin because all records have the same ambiguous sender name. That is a different root cause from the syslog transport acl fault observed at an industrial site operations group in Munich. Applying that approach alone would not establish the required result: Packets reach the collector and event entries appear under the expected device.

That approach is relevant to syslog severity threshold, such as when informational interface events never reach syslog because the configured logging trap level captures only severe messages. That is a different root cause from the syslog transport acl fault observed at an industrial site operations group in Munich. Applying that approach alone would not establish the required result: Packets reach the collector and event entries appear under the expected device.

That approach is relevant to syslog remote destination, such as when a router logs events locally but nothing reaches the central collector because logging host was never configured. That is a different root cause from the syslog transport acl fault observed at an industrial site operations group in Munich. Applying that approach alone would not establish the required result: Packets reach the collector and event entries appear under the expected device.

That observation verifies syslog remote destination in a different situation, such as when a router logs events locally but nothing reaches the central collector because logging host was never configured. For the reported syslog transport acl incident at an industrial site operations group in Munich, the required acceptance evidence is: Packets reach the collector and event entries appear under the expected device. This other result does not test that condition directly.

That observation verifies streaming telemetry subscription in a different situation, such as when telemetry measurements stop appearing even though periodic CLI monitoring works because the subscription destination is unreachable. For the reported syslog transport acl incident at an industrial site operations group in Munich, the required acceptance evidence is: Packets reach the collector and event entries appear under the expected device. This other result does not test that condition directly.

That observation verifies logging buffer too small in a different situation, such as when relevant CLI log evidence disappears during an incident because the local logging buffer wraps almost immediately. For the reported syslog transport acl incident at an industrial site operations group in Munich, the required acceptance evidence is: Packets reach the collector and event entries appear under the expected device. This other result does not test that condition directly.

That approach is relevant to spoke multicast static mapping, such as when a DMVPN spoke reaches the hub by unicast but its multicast routing hellos never reach the hub tunnel. That is a different root cause from the static hub mapping at spoke fault observed at a private transport network in Zurich. Applying that approach alone would not establish the required result: The spoke resolves the hub and registers with its intended next-hop server.

That approach is relevant to dmvpn front-door vrf, such as when the tunnel's physical WAN interface belongs to a transport VRF but tunnel underlay lookups incorrectly use the global table. That is a different root cause from the static hub mapping at spoke fault observed at a private transport network in Zurich. Applying that approach alone would not establish the required result: The spoke resolves the hub and registers with its intended next-hop server.

That approach is relevant to spoke nhrp registration age, such as when a hub stops forwarding for one spoke because its NHRP registration repeatedly expires. That is a different root cause from the static hub mapping at spoke fault observed at a private transport network in Zurich. Applying that approach alone would not establish the required result: The spoke resolves the hub and registers with its intended next-hop server.

That observation verifies phase 2 next-hop-self in a different situation, such as when in phase 2 DMVPN, hub EIGRP changes the next hop to its own tunnel IP, preventing a direct spoke shortcut. For the reported static hub mapping at spoke incident at a private transport network in Zurich, the required acceptance evidence is: The spoke resolves the hub and registers with its intended next-hop server. This other result does not test that condition directly.

That observation verifies spoke multicast static mapping in a different situation, such as when a DMVPN spoke reaches the hub by unicast but its multicast routing hellos never reach the hub tunnel. For the reported static hub mapping at spoke incident at a private transport network in Zurich, the required acceptance evidence is: The spoke resolves the hub and registers with its intended next-hop server. This other result does not test that condition directly.

That observation verifies dmvpn nhrp network id mismatch in a different situation, such as when the hub and spoke use different NHRP network identifiers despite otherwise consistent tunnel addressing. For the reported static hub mapping at spoke incident at a private transport network in Zurich, the required acceptance evidence is: The spoke resolves the hub and registers with its intended next-hop server. This other result does not test that condition directly.

That approach is relevant to ipv6 nd spoofing, such as when an attacker injects forged Neighbor Advertisements to redirect local IPv6 traffic. That is a different root cause from the ndp duplicate address detect fault observed at a health system WAN in Toronto. Applying that approach alone would not establish the required result: The host completes duplicate address detection and assigns an available IPv6 address.

That approach is relevant to ipv6 nd trust validation, such as when a first-hop protection policy is copied from a different VLAN and treats all access ports as trusted for neighbor discovery. That is a different root cause from the ndp duplicate address detect fault observed at a health system WAN in Toronto. Applying that approach alone would not establish the required result: The host completes duplicate address detection and assigns an available IPv6 address.

That approach is relevant to ipv6 rogue router advertisements, such as when an untrusted access port sends IPv6 Router Advertisements and changes hosts' default gateway. That is a different root cause from the ndp duplicate address detect fault observed at a health system WAN in Toronto. Applying that approach alone would not establish the required result: The host completes duplicate address detection and assigns an available IPv6 address.

That observation verifies dhcpv6 rogue server in a different situation, such as when a malicious access client sends DHCPv6 server responses that assign incorrect network parameters to hosts. For the reported ndp duplicate address detect incident at a health system WAN in Toronto, the required acceptance evidence is: The host completes duplicate address detection and assigns an available IPv6 address. This other result does not test that condition directly.

That observation verifies ipv6 nd spoofing in a different situation, such as when an attacker injects forged Neighbor Advertisements to redirect local IPv6 traffic. For the reported ndp duplicate address detect incident at a health system WAN in Toronto, the required acceptance evidence is: The host completes duplicate address detection and assigns an available IPv6 address. This other result does not test that condition directly.

That observation verifies ra guard trusted boundary in a different situation, such as when rA Guard is deployed only on the legitimate router-facing port instead of the untrusted host-facing ports. For the reported ndp duplicate address detect incident at a health system WAN in Toronto, the required acceptance evidence is: The host completes duplicate address detection and assigns an available IPv6 address. This other result does not test that condition directly.