Correct Answer: A

The virtual MAC address is 0000.0c07.acXX (XX is the hexadecimal group number) so it is using HSRPv1. Note: HSRP Version 2 uses a new MAC address which ranges from 0000.0C9F.F000 to 0000.0C9F.FFFF.

Correct Answer: A

To enable the WGB to communicate with the lightweight access point, create a WLAN and make sure that Aironet IE is enabled. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-1/configuration-guide/b_cg81/workgroup_bridges.pdf

Correct Answer: BE

Very tricky question, but i will try to explain.

That is position of darude or the AandE guys:

R2 is in standby with prio 90.

R1 is active with prio 85.

Fa0/0 is down, because otherwise R2 would have prio 80.

Assuming Fa0/0 is the keep-alive between R2 and R1, R1 is down.

R2 will detect, that R1 is down in 8.672sec and will take over the active role.

But from my point of view we can not assume, that Fa0/0 is the keep-alive, because the hold time is 10sec and hello time 3sec. The hold time is expired by only 1.328sec, so we can't know, if the hello message could have reached R1,

because the hello time is 3sec.

Correct Answer: D

Stateful Switchover Routers specifically designed for high availability include hardware redundancy, such as dual power supplies and route processors (RPs). An RP is responsible for learning the network topology and building the route table (RIB). An RP failure can trigger routing protocol adjacencies to reset, resulting in packet loss and network instability. During an RP failure, it may be more desirable to hide the failure and allow the router to continue forwarding packets using the previously programmed CEF table entries rather than temporarily drop packets while waiting for the secondary RP to reestablish the routing protocol adjacencies and rebuild the forwarding table.

Stateful switchover (SSO) is a redundancy feature that allows a Cisco router with two RPs to synchronize router configuration and control plane state information. The process of mirroring information between RPs is referred to as checkpointing. SSO-enabled routers always checkpoint line card operation and Layer 2 protocol states. During a switchover, the standby RP immediately takes control and prevents basic problems such as interface link flaps. However, Layer 3 packet forwarding is disrupted without additional configuration.

The RP switchover triggers a routing protocol adjacency flap that clears the route table. When the routing table is cleared, the CEF entries are purged, and traffic is no longer routed until the network topology is relearned and the forwarding table is reprogrammed. Enabling nonstop forwarding (NSF) or nonstop routing (NSR) high availability capabilities informs the router(s) to maintain the CEF entries for a short duration and continue forwarding packets through an RP failure until the control plane recovers.

Correct Answer: