NetApp Certified Technology Solutions Professional (NS0-004) Practice Test

What role does DNS play in LIF failover?

DNS has no impact on LIF failover. DNS resolves to a fixed primary LIF IP regardless of failover. DNS configures failover priorities for LIFs. DNS helps clients resolve to the active LIF IPs, affecting failover visibility and client reconnect behavior.

Correct Answer:

DNS helps clients resolve to the active LIF IPs, affecting failover visibility and client reconnect behavior.

Explanation:

DNS helps clients reach the active LIF by resolving the LIF’s name to the IP that’s currently in use for that LIF. When a LIF fails over to another node, the service remains reachable at the same LIF IP, but the client must resolve the LIF name again to confirm the active path. This affects failover visibility and reconnect behavior because clients rely on DNS to obtain the correct, reachable IP after a failover. The speed of recovery depends on DNS TTL: a shorter TTL lets clients re-resolve sooner and reconnect to the active LIF, while a longer TTL can delay this re-resolution. DNS does not set which LIF will fail over or directly control the failover itself; it simply ensures clients connect to the current active IP.

Access more questions from this quiz

Continue to NetApp Certified Technology Solutions Professional (NS0-004) Practice Test for more practice questions and the full quiz experience.

Access More Questions