F5
101 · Question #62
101 Question #62: Real Exam Question with Answer & Explanation
The correct answer is A: All open connections are lost.. By default, all open connections through a BIG-IP virtual server are lost when a failover occurs because connection state is not mirrored unless explicitly configured.
Question
Assuming there are open connections through an active system's virtual servers and a failover occurs, by default, what happens to the connections.
Options
- AAll open connections are lost.
- BAll open connections are maintained.
- CWhen persistence mirroring is enabled, open connections are maintained even if a failover
- DLonglived connections such as Telnet and FTP are maintained, but shortlived connections such
- EAll open connections are lost, but new connections are initiated by the newly active BIG-IP,
Explanation
By default, all open connections through a BIG-IP virtual server are lost when a failover occurs because connection state is not mirrored unless explicitly configured.
Common mistakes.
- B. Connections are not automatically maintained; mirroring must be explicitly enabled on each virtual server for state to carry over.
- C. Persistence mirroring preserves persistence records so that reconnecting clients are sent to the same pool member, but it does not keep the original open connections alive through a failover.
- D. BIG-IP does not distinguish between long-lived and short-lived connections for default failover behavior; all connections are lost regardless of protocol without mirroring.
- E. The newly active BIG-IP does not automatically re-initiate connections on behalf of clients; clients must initiate new connections themselves.
Concept tested. F5 BIG-IP default connection behavior during HA failover
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