F5 Networks F5CAB5 Exam - Topic 4 Question 5 Discussion

Actual exam question for F5 Networks's F5CAB5 exam

Question #: 5
Topic #: 4

[All F5CAB5 Questions]

resume is enabled and a health check first fails and then passes?

AOffline (Disabled)

BOffline (Enabled)

CAvailable (Disabled)

DAvailable (Enabled)

Show Suggested Answer

Suggested Answer: A

Comprehensive and Detailed Explanation From BIG-IP Administration Support and Troubleshooting documents: The 'Manual Resume' feature is a safety mechanism used when a pool is not working as expected due to flapping services or unstable backend applications. Normally, when a health monitor fails, the pool member is marked 'Offline' (Red), and when the monitor passes, it automatically returns to 'Available' (Green)47. However, if 'Manual Resume' is enabled, the BIG-IP will not automatically put the member back into rotation after a failure48. Even if the health check begins to pass again, the member remains in an 'Offline (Disabled)' state49. This requires an administrator to manually intervene and re-enable the member. This is a common point of confusion when troubleshooting; a member may show passing health checks but still not receive traffic because it is waiting for a manual administrative 'resume' command. This feature is intended to prevent 'unhealthy' servers from receiving traffic until an engineer has confirmed the root cause of the initial failure was resolved.

by Alton at Jan 24, 2026, 12:52 AM

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Suzan

2 months ago

I agree with Cassandra. D) Available (Enabled) shows it can recover after a check.

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Lorrine

2 months ago

I feel like A) Offline (Disabled) fits better. If it fails, it shouldn’t be available.

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Kasandra

2 months ago

I’m leaning towards B) Offline (Enabled). Initial failure could mean it’s not fully ready.

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Cassandra

2 months ago

I think it’s D) Available (Enabled). Makes sense if it passes later.

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Estrella

4 months ago

I’m not sure, isn’t that a bit contradictory?

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Ming

4 months ago

Totally agree with D, makes the most sense!

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Jerrod

4 months ago

Wait, how can it fail and then pass? Sounds weird.

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Nikita

4 months ago

That doesn’t sound right, it should be A) Offline (Disabled).

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Romana

5 months ago

I think it’s D) Available (Enabled).

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Fletcher

5 months ago

B) Offline (Enabled) - The system is just taking a coffee break, no need to panic!

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Ma

5 months ago

D) Available (Enabled) - The system is like a cat, playing dead and then springing back to life!

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Walton

5 months ago

C) Available (Disabled) - Schrodinger's health check, both available and not available at the same time.

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Linwood

5 months ago

B) Offline (Enabled) - Looks like the system is taking a nap and then waking up refreshed!

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Adelle

5 months ago

D) Available (Enabled)

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Sue

6 months ago

I’m a bit confused. I thought if the health check fails, it would definitely be Offline, but then it passing later complicates things. Is it still Offline?

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Erick

6 months ago

Hmm, I feel like if the health check eventually passes, it could indicate that the service is Available. But does that mean it's Enabled?

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Rueben

7 months ago

I remember a practice question where a similar scenario was discussed, and I think it was about the service being Available but Disabled. Could that apply here too?

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Alecia

7 months ago

I think if the health check fails first, it might mean the service is not fully operational, so maybe it's Offline? But I'm not entirely sure.

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Glenna

7 months ago

Yeah, I agree with Sarah. The key is understanding what "resume is enabled" means in this context. D seems like the right answer.

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Corazon

7 months ago

I think I've got it. If resume is enabled and the health check fails first, then passes, that means the service should be in the "Available (Enabled)" state. That's my best guess for D.

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