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101 · Question #6
101 Question #6: Real Exam Question with Answer & Explanation
The correct answer is B: Connection mirroring data is shared via a TCP connection using port 1028.. BIG-IP redundant pairs use TCP port 1028 for both connection mirroring and persistence mirroring between active and standby devices by default.
Question
Which two statements are true concerning the default communication between a redundant pair of BIG-IP systems. (Choose two.)
Options
- ASynchronization occurs via a TCP connection using ports 683 and 684.
- BConnection mirroring data is shared via a TCP connection using port 1028.
- CPersistence mirroring data is shared via a TCP connection using port 1028.
- DConnection mirroring data is shared through the serial failover cable unless network failover is
Explanation
BIG-IP redundant pairs use TCP port 1028 for both connection mirroring and persistence mirroring between active and standby devices by default.
Common mistakes.
- A. Ports 683 and 684 are not the standard ports used for BIG-IP configuration synchronization; this does not accurately describe the default redundancy communication mechanism.
- D. Connection mirroring uses the network failover communication path over TCP port 1028, not a serial failover cable; the serial cable is used only as a failover heartbeat signal, not for mirroring data.
Concept tested. BIG-IP connection and persistence mirroring port 1028
Reference. https://support.f5.com/csp/article/K13946
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