IP ConnectivityDifficulty 2/5
What is the purpose of HSRP?
- AEncrypt traffic between two routers
- BAssign IP addresses to hosts
- CLoad-balance traffic across equal-cost OSPF paths
- DProvide a virtual default gateway that survives the failure of one router
Show answer and rationale
Correct: D. First-hop redundancy protocols (HSRP, VRRP, GLBP) present a virtual IP and MAC as the hosts' default gateway; if the active router fails, the standby takes over without changing host configuration.
- C — ECMP is a routing behavior, not HSRP.
- A — Encryption is IPsec.
- B — Address assignment is DHCP.