Selected Answer: B
When SSO is enabled on a Cisco router, the active and standby routers exchange state information periodically. In the event of a failure, the standby router assumes the role of the active router and begins forwarding traffic. This process is transparent to the network, and there is no interruption in service.Specifically, when SSO is enabled with HSRP, the standby router maintains a synchronized copy of the active router's HSRP state information, including the virtual IP address and MAC address. If the active router fails, the standby router can immediately take over as the active HSRP router and continue forwarding traffic using the same virtual IP and MAC addresses.Therefore, the correct answer is B. It ensures fast failover in the case of link failure.
upvoted 2 times
Beehurls
1month ago
SSO has nothing to do with the failover in case of link failure. That is all HSRP.
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Burik
10months ago
"SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. When an RP is active and the other RP is standby, SSO enables the standby RP to take over if the active RP fails."https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-sy/fhp-15-sy-book/fhp-hsrp-sso.pdfThe answer is D.
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