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F5 Networks F5CAB4 Exam - Topic 3 Question 9 Discussion

When looking at this BIG-IP prompt: root@virtual-bigip1] Peer Time Out of SyncWhat does the message indicate? (Choose one answer)
D) That there was a time synchronization issue between the BIG-IP device and its peer
A) That one of the NTP sources has a skewed clock
B) That the peer BIG-IP is unreachable for the device group
C) That the local time is correct, but the remote time is incorrect

F5 Networks F5CAB4 Exam - Topic 3 Question 9 Discussion

Actual exam question for F5 Networks's F5CAB4 exam
Question #: 9
Topic #: 3
[All F5CAB4 Questions]

When looking at this BIG-IP prompt: root@virtual-bigip1] Peer Time Out of Sync

What does the message indicate? (Choose one answer)

Show Suggested Answer Hide Answer
Suggested Answer: D

Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:

On BIG-IP systems that participate in a Device Service Cluster (DSC), each device compares the remote device's system time to its own system time. If the difference is outside the ConfigSync time threshold (commonly referenced as 3 seconds by default), BIG-IP updates the shell prompt to show ''Peer Time Out of Sync'', and ConfigSync operations may fail until time is corrected (typically by fixing NTP reachability/configuration, or in some cases adjusting the threshold). (cdn.studio.f5.com)

This message is specifically about time drift between peers in the trust domain/DSC---not basic reachability (so B is not what it means), and it does not prove which side is ''correct'' (so C is too specific). It also doesn't directly mean an NTP source is ''skewed'' (A can be a cause, but the prompt message itself indicates the peer-to-peer time mismatch condition). (cdn.studio.f5.com)


by Hester at Apr 08, 2026, 10:23 AM

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Lucina
5 days ago
D is the best choice. It covers all sync issues.
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Thaddeus
11 days ago
I feel like C is a bit off. Local time should be accurate.
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Lenna
16 days ago
B seems possible too. If the peer is unreachable, it could show this.
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Rene
21 days ago
I’m leaning towards A. A skewed clock can cause this.
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Aracelis
26 days ago
I agree, D makes sense. Peers need to sync.
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Willard
1 month ago
I think it's D. Time sync issues are common.
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Desire
1 month ago
B seems plausible too, maybe the peer is just unreachable.
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Ettie
1 month ago
Wait, how can the local time be correct if the peer is out of sync?
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Genevieve
2 months ago
I agree with D, it's usually about the sync problem.
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Lashawnda
2 months ago
I think it's A, one of the NTP sources must be off.
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Myra
2 months ago
Definitely D, time sync issues are common with BIG-IP.
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Dottie
2 months ago
I'm surprised this isn't more of a frequent issue!
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Shasta
2 months ago
Wait, could it really be B? What if the peer is just down?
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Dahlia
2 months ago
I agree with D, that's what it sounds like.
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Melinda
4 months ago
I think it's A, one of the NTP sources must be off.
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Beata
4 months ago
Definitely D, time sync issues are common.
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Myong
5 months ago
I lean towards D as well, but I wonder if C could apply if the local time is fine and only the peer is off.
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Harrison
5 months ago
I feel like it could be B since it mentions the peer being unreachable, but that doesn't seem to fit the "time out of sync" part.
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Annmarie
5 months ago
I remember a practice question about NTP issues, and I think A could be a possibility too if one source has a skewed clock.
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Marylou
5 months ago
I think the message might mean there's a time sync issue, so maybe it's D? But I'm not entirely sure.
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