View all questions & answers for the BIG-IP Administration Data Plane Concepts (F5CAB2) exam


Question 48 Discussion

A BIG-IP Administrator makes a configuration change to a Virtual Server on the Standby device of an HA pair. The HA pair is currently configured with Auto-Sync enabled. What effect will the change have on the HA pair configuration? (Choose one answer)

  • A. The change will be undone next time a configuration change is made on the Active device.
  • B. The change will be propagated next time a configuration change is made on the Active device.
  • C. The change will be undone when Auto-Sync propagates the config to the Standby device.
  • D. The change will take effect when Auto-Sync propagates the config to the HA pair.
Correct Answer: C

Brave-Dump Clients Votes

C 83.33%
D 16.67%

Comments



Brave-Dumps Admin 2025-12-08 17:46:23

Selected Answers: C


You must NEVER modify the Standby unit. Any change made on the Standby device is overwritten automatically by the Active unit when Auto-Sync is enabled.

Claudio Lukelo 2025-12-15 14:06:46

Selected Answers: D


Automatic
Automatic synchronization (also known as auto sync) ensures that the BIG-IP system automatically synchronizes the configuration among device group members whenever you make a change to any one of those devices.

https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-device-service-clustering-admin-11-5-0/7.html?utm_source=chatgpt.com

Yongguang Li 2025-12-20 10:14:27

Selected Answers: C


C is right

Drome 2026-01-06 22:55:19

Selected Answers: C


uto-Sync = Active manda, Standby obedece

Anonymous User 2026-01-19 05:12:45

Selected Answers: C


Step 1: Understand the scenario

HA pair → Active/Standby BIG-IP devices.

Auto-Sync enabled → Any configuration change on the Active device is automatically propagated to the Standby.

Change made on Standby → Not typical, because Standby is usually read-only for normal config sync purposes.

Step 2: Behavior of Auto-Sync

Auto-Sync does not propagate changes made on the Standby to the Active.

Instead, the Standby will eventually be overwritten with the Active device’s configuration.

So any change made directly on the Standby will be undone when Auto-Sync occurs.

✅ Step 3: Match with options

A. The change will be undone next time a configuration change is made on the Active device. ❌

Undo happens because of Auto-Sync, not only after a change on Active, but also during normal sync.

B. The change will be propagated next time a configuration change is made on the Active device. ❌

Changes on Standby are not propagated to Active.

C. The change will be undone when Auto-Sync propagates the config to the Standby device. ✅

Exactly right. Standby change gets overwritten by Active during Auto-Sync.

D. The change will take effect when Auto-Sync propagates the config to the HA pair. ❌

Wrong. Auto-Sync flows Active → Standby, not the other way around.

✅ Answer:

C. The change will be undone when Auto-Sync propagates the config to the Standby device.

Anonymous User 2026-02-21 11:18:03

Selected Answers: C


The correct answer is C. The change will be undone when Auto-Sync propagates the config to the Standby device.
When Auto-Sync is enabled, the Active device is the authoritative source of configuration. If a change is made directly on the Standby device, the next Auto-Sync event will push the Active device's configuration down to the Standby, effectively overwriting the change that was made on the Standby. The Standby's local change will be lost.