Certification795 problems· 7 reviewed

CCNP Enterprise

795 incident response problems that help with CCNP Enterprise prep.

All problems (795)

NETWORK-114The multicast rendezvous point is reachable, but SSM clients failCore multicast signaling looks healthy, yet receivers never join the intended streams because the edge protocol expectation differs.NetworkAdvanced18 minPro NETWORK-1190WebSocket path fails only through reverse proxyA network team validates normal HTTP traffic and DNS, yet upgraded sessions still fail because one proxy hop never forwards the needed semantics.NetworkIntermediate18 minPro NETWORK-318A multicast RP pair is configured while one group range is filtered from MSDP state propagation and failover never restores those streams during a failover rehearsalRedundancy exists and one class of streams never inherits it. Normal traffic masked the issue until the standby or alternate path became active under rehearsal conditions.NetworkAdvanced19 minPro NETWORK-1195Reverse proxy returns 499 and upstream timeout togetherA team reads public NGINX troubleshooting threads and focuses on 499 status codes. The real problem is a backend path slow enough that clients disconnect first.NetworkIntermediate19 minPro NETWORK-1197Load balancer keeps reusing an old backend pathA cutover follows runbook timing, but the edge still uses the old backend because one layer caches the resolution path longer than the service owner assumed.NetworkIntermediate20 minPro NETWORK-1193Packet capture proves SYN reaches the host but the reply leaves on the wrong interfaceInbound traffic is visible, yet the connection still fails because the response follows a different egress path than the one the client can actually return through.NetworkIntermediate20 minPro NETWORK-1630A multicast boundary is right and one flow still failsOne multicast flow still fails after a boundary update.NetworkIntermediate10 minPro NETWORK-1620An EVPN route import is correct and one MAC still lands on the wrong leafOne MAC still lands on the wrong leaf after an EVPN move.NetworkIntermediate10 minPro NETWORK-1720A QoS handoff stays reachable and voice still degradesVoice still degrades after a QoS handoff update.NetworkIntermediate11 minPro NETWORK-1730A QoS policy is deployed and voice still degradesVoice still degrades after a QoS policy rollout.NetworkIntermediate11 minPro NETWORK-1740A QoS policy is deployed and voice still degradesVoice still degrades after a QoS rollout.NetworkIntermediate11 minPro NETWORK-1750A QoS policy is deployed and voice still degradesVoice still degrades after a QoS rollout.NetworkIntermediate11 minPro NETWORK-1770A QoS policy is deployed and voice still degradesVoice still degrades after a QoS rollout.NetworkIntermediate11 minPro NETWORK-1790A QoS policy is deployed and voice still degradesVoice still degrades after the QoS policy rollout.NetworkIntermediate11 minPro NETWORK-1830A QoS policy is deployed and voice still degradesVoice still degrades after the QoS policy rollout.NetworkIntermediate11 minPro NETWORK-1710A QoS policy is deployed and voice traffic still degradesVoice traffic still degrades after a QoS policy rollout.NetworkIntermediate11 minPro NETWORK-1760A QoS rollout is complete and voice still degradesVoice still degrades after the QoS rollout completed.NetworkIntermediate11 minPro NETWORK-1780A QoS rollout is complete and voice still degradesVoice still degrades after the QoS rollout completed.NetworkIntermediate11 minPro NETWORK-1800A QoS rollout is complete and voice still degradesVoice still degrades after the QoS rollout completed.NetworkIntermediate11 minPro NETWORK-1840A QoS rollout is complete and voice still degradesVoice still degrades after the QoS rollout completed.NetworkIntermediate11 minPro