Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) — Question 366
In a Cisco Catalyst switch equipped with two supervisor modules an administrator must temporarily remove the active supervisor from the chassis to perform hardware maintenance on it. Which mechanism ensures that the active supervisor removal is not disruptive to the network operation?
Answer options
- A. VRRP
- B. HSRP
- C. NSF/NSR
- D. SSO
Correct answer: D
Explanation
SSO (Stateful Switchover) is designed to maintain network operations without disruption during a supervisor module failure or maintenance. The other options, such as VRRP and HSRP, are used for router redundancy but do not apply to supervisor module maintenance. NSF/NSR relates to routing protocol state preservation but is not specifically focused on supervisor module management.