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A network engineer is designing a campus network with high availability for critical services. Which Cisco technology enables traffic to be forwarded to an alternate next hop in the event of a first-hop router failure, without requiring any configuration changes on the hosts?
HSRP (Hot Standby Router Protocol) is a Cisco-proprietary FHRP that allows multiple routers to share a virtual IP and MAC address, providing transparent failover. Hosts are configured with the virtual IP as their default gateway, so when the active router fails, the standby route…Read full explanation
A company is deploying a wireless network in an office with high client density. Which Cisco architecture is best suited to handle client roaming without requiring a central controller for every roaming event?
FlexConnect (option D) is the correct architecture because it allows client data traffic to be switched locally at the remote site, while the control plane remains centralized. This design eliminates the need for a central controller to process every roaming event, as clients can…Read full explanation
An enterprise is using OSPF in a multi-area design. Area 1 is a regular area, and Area 2 is a totally stubby area. Which LSA types are present in Area 2?
In a totally stubby area, the ABR blocks Type 4 and Type 5 LSAs and replaces all Type 3 inter-area routes with a single default route (Type 3 LSA with link-state ID 0.0.0.0). Therefore, only Type 1 (router), Type 2 (network), and the default Type 3 LSAs are present. This matches …Read full explanation
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