Exam Bundle

That observation verifies ospf dr bdr network type in a different situation, such as when a point-to-point link is configured with an OSPF broadcast network type and displays an unnecessary DR election. For the reported ospfv3 router id incident at a retail network core in Chicago, the required acceptance evidence is: The OSPFv3 process and expected IPv6 adjacencies are established with unique router IDs. This other result does not test that condition directly.

That observation verifies ospf area mismatch in a different situation, such as when two OSPF routers on one link receive hellos but use different area identifiers, preventing adjacency. For the reported ospfv3 router id incident at a retail network core in Chicago, the required acceptance evidence is: The OSPFv3 process and expected IPv6 adjacencies are established with unique router IDs. This other result does not test that condition directly.

That observation verifies ospf cost path choice in a different situation, such as when an engineer expects OSPF to choose the highest interface speed but configured interface cost forces a different path. For the reported ospfv3 router id incident at a retail network core in Chicago, the required acceptance evidence is: The OSPFv3 process and expected IPv6 adjacencies are established with unique router IDs. This other result does not test that condition directly.

That approach is relevant to nhrp cache verification, such as when a direct spoke route exists but its tunnel next hop lacks a corresponding NHRP resolution entry. That is a different root cause from the hub dynamic multicast mappings fault observed at a manufacturing group in Copenhagen. Applying that approach alone would not establish the required result: Routing protocol hellos reach registered spokes and intended EIGRP adjacency forms.

That approach is relevant to phase 3 nhrp redirect shortcut, such as when a phase 3 DMVPN uses only hub transit even for established spoke-to-spoke flows because redirect and shortcut mechanisms are absent. That is a different root cause from the hub dynamic multicast mappings fault observed at a manufacturing group in Copenhagen. Applying that approach alone would not establish the required result: Routing protocol hellos reach registered spokes and intended EIGRP adjacency forms.

That approach is relevant to eigrp dmvpn peer issue, such as when dMVPN peers have protected tunnel reachability but EIGRP never forms because routing is not active on tunnel interfaces. That is a different root cause from the hub dynamic multicast mappings fault observed at a manufacturing group in Copenhagen. Applying that approach alone would not establish the required result: Routing protocol hellos reach registered spokes and intended EIGRP adjacency forms.

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 hub dynamic multicast mappings incident at a manufacturing group in Copenhagen, the required acceptance evidence is: Routing protocol hellos reach registered spokes and intended EIGRP adjacency forms. This other result does not test that condition directly.

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 hub dynamic multicast mappings incident at a manufacturing group in Copenhagen, the required acceptance evidence is: Routing protocol hellos reach registered spokes and intended EIGRP adjacency forms. This other result does not test that condition directly.

That observation verifies dmvpn peer-state cli in a different situation, such as when tunnel interfaces show up/up but the team has not checked whether NHRP peers are registered and active. For the reported hub dynamic multicast mappings incident at a manufacturing group in Copenhagen, the required acceptance evidence is: Routing protocol hellos reach registered spokes and intended EIGRP adjacency forms. This other result does not test that condition directly.

That approach is relevant to snmpv3 algorithm mismatch, such as when sNMPv3 manager authentication fails because the manager and device use mismatched privacy or authentication settings. That is a different root cause from the snmpv2c community mismatch fault observed at a research institution in Helsinki. Applying that approach alone would not establish the required result: SNMPv2c GET requests from the allowed manager receive the expected MIB values.

That approach is relevant to snmp polling versus traps, such as when an engineer expects router traps to appear merely because polling UDP 161 is permitted, while outbound notification transport is blocked. That is a different root cause from the snmpv2c community mismatch fault observed at a research institution in Helsinki. Applying that approach alone would not establish the required result: SNMPv2c GET requests from the allowed manager receive the expected MIB values.

That approach is relevant to snmp mib view restricted, such as when sNMPv3 authentication works but the requested interface OIDs are excluded by the assigned view. That is a different root cause from the snmpv2c community mismatch fault observed at a research institution in Helsinki. Applying that approach alone would not establish the required result: SNMPv2c GET requests from the allowed manager receive the expected MIB values.

That observation verifies snmpv3 engine id mismatch in a different situation, such as when sNMPv3 credentials stop working after a device engine ID changes while old localized keys remain. For the reported snmpv2c community mismatch incident at a research institution in Helsinki, the required acceptance evidence is: SNMPv2c GET requests from the allowed manager receive the expected MIB values. This other result does not test that condition directly.

That observation verifies snmpv3 algorithm mismatch in a different situation, such as when sNMPv3 manager authentication fails because the manager and device use mismatched privacy or authentication settings. For the reported snmpv2c community mismatch incident at a research institution in Helsinki, the required acceptance evidence is: SNMPv2c GET requests from the allowed manager receive the expected MIB values. This other result does not test that condition directly.

That observation verifies snmp mib view restricted in a different situation, such as when sNMPv3 authentication works but the requested interface OIDs are excluded by the assigned view. For the reported snmpv2c community mismatch incident at a research institution in Helsinki, the required acceptance evidence is: SNMPv2c GET requests from the allowed manager receive the expected MIB values. This other result does not test that condition directly.

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 ra guard trusted boundary fault observed at an e-commerce backbone in Amsterdam. Applying that approach alone would not establish the required result: Legitimate RAs reach clients while rogue access-host advertisements are blocked.

That approach is relevant to dhcpv6 rogue server, such as when a malicious access client sends DHCPv6 server responses that assign incorrect network parameters to hosts. That is a different root cause from the ra guard trusted boundary fault observed at an e-commerce backbone in Amsterdam. Applying that approach alone would not establish the required result: Legitimate RAs reach clients while rogue access-host advertisements are blocked.

That approach is relevant to ipv6 source guard, such as when a client spoofs an IPv6 source address not associated with its access port and evades ordinary destination filtering. That is a different root cause from the ra guard trusted boundary fault observed at an e-commerce backbone in Amsterdam. Applying that approach alone would not establish the required result: Legitimate RAs reach clients while rogue access-host advertisements are blocked.

That observation verifies ipv6 rogue router advertisements in a different situation, such as when an untrusted access port sends IPv6 Router Advertisements and changes hosts' default gateway. For the reported ra guard trusted boundary incident at an e-commerce backbone in Amsterdam, the required acceptance evidence is: Legitimate RAs reach clients while rogue access-host advertisements are blocked. This other result does not test that condition directly.

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 ra guard trusted boundary incident at an e-commerce backbone in Amsterdam, the required acceptance evidence is: Legitimate RAs reach clients while rogue access-host advertisements are blocked. This other result does not test that condition directly.

That observation verifies ipv6 nd trust validation in a different situation, such as when a first-hop protection policy is copied from a different VLAN and treats all access ports as trusted for neighbor discovery. For the reported ra guard trusted boundary incident at an e-commerce backbone in Amsterdam, the required acceptance evidence is: Legitimate RAs reach clients while rogue access-host advertisements are blocked. This other result does not test that condition directly.

That approach is relevant to bgp weight precedence, such as when a local router chooses an unexpected egress because a neighbor-specific Cisco weight overrides a higher local preference on another path. That is a different root cause from the bgp local preference fault observed at a retail network core in Chicago. Applying that approach alone would not establish the required result: Internal BGP speakers prefer the advertised path with the higher appropriate local preference.

That approach is relevant to ibgp loopback update-source, such as when an iBGP session configured to peer loopback-to-loopback remains Idle because the local source defaults to the physical interface. That is a different root cause from the bgp local preference fault observed at a retail network core in Chicago. Applying that approach alone would not establish the required result: Internal BGP speakers prefer the advertised path with the higher appropriate local preference.

That approach is relevant to as path prepending inbound control, such as when traffic from external networks enters via the undesired backup link even though local preference was changed only inside the enterprise. That is a different root cause from the bgp local preference fault observed at a retail network core in Chicago. Applying that approach alone would not establish the required result: Internal BGP speakers prefer the advertised path with the higher appropriate local preference.

That observation verifies bgp med comparison in a different situation, such as when two paths from the same neighboring AS have differing MEDs, but operators assume the higher MED attracts traffic. For the reported bgp local preference incident at a retail network core in Chicago, the required acceptance evidence is: Internal BGP speakers prefer the advertised path with the higher appropriate local preference. This other result does not test that condition directly.

That observation verifies bgp weight precedence in a different situation, such as when a local router chooses an unexpected egress because a neighbor-specific Cisco weight overrides a higher local preference on another path. For the reported bgp local preference incident at a retail network core in Chicago, the required acceptance evidence is: Internal BGP speakers prefer the advertised path with the higher appropriate local preference. This other result does not test that condition directly.

That observation verifies ebgp nonconnected loopback in a different situation, such as when bGP TCP connectivity over loopbacks fails because a multihop eBGP peer relies on a default one-hop TTL. For the reported bgp local preference incident at a retail network core in Chicago, the required acceptance evidence is: Internal BGP speakers prefer the advertised path with the higher appropriate local preference. This other result does not test that condition directly.

That approach is relevant to ssh source interface routing, such as when management SSH works from one site but not another because replies leave through an unintended VRF or source path. That is a different root cause from the ssh rsa key prerequisites fault observed at a city service network in Singapore. Applying that approach alone would not establish the required result: The SSH server reports enabled status and negotiated logins use an approved algorithm.

That approach is relevant to tftp transfer firewall, such as when a device can ping its image server but TFTP copy fails because an intermediate ACL blocks the required UDP TFTP exchange. That is a different root cause from the ssh rsa key prerequisites fault observed at a city service network in Singapore. Applying that approach alone would not establish the required result: The SSH server reports enabled status and negotiated logins use an approved algorithm.

That approach is relevant to https management instead of http, such as when router web-management credentials traverse an unencrypted HTTP service despite a secure management requirement. That is a different root cause from the ssh rsa key prerequisites fault observed at a city service network in Singapore. Applying that approach alone would not establish the required result: The SSH server reports enabled status and negotiated logins use an approved algorithm.

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 ssh rsa key prerequisites incident at a city service network in Singapore, the required acceptance evidence is: The SSH server reports enabled status and negotiated logins use an approved algorithm. This other result does not test that condition directly.

That observation verifies tftp transfer firewall in a different situation, such as when a device can ping its image server but TFTP copy fails because an intermediate ACL blocks the required UDP TFTP exchange. For the reported ssh rsa key prerequisites incident at a city service network in Singapore, the required acceptance evidence is: The SSH server reports enabled status and negotiated logins use an approved algorithm. This other result does not test that condition directly.

That observation verifies https management instead of http in a different situation, such as when router web-management credentials traverse an unencrypted HTTP service despite a secure management requirement. For the reported ssh rsa key prerequisites incident at a city service network in Singapore, the required acceptance evidence is: The SSH server reports enabled status and negotiated logins use an approved algorithm. This other result does not test that condition directly.