F5 Networks 303 Exam - Topic 3 Question 18 Discussion

Actual exam question for F5 Networks's 303 exam

Question #: 18
Topic #: 3

In preparation for a maintenance task, an LTM Specialist performs a "Force to Standby" on LTM device Unit 1. LTM device Unit 2 becomes active as expected. The maintenance task requires the reboot of Unit 1. Shortly after the reboot is complete, the LTM Specialist discovers that Unit 1 has become active and Unit 2 has returned to standby.

What would cause this behavior?

AUnit 1 is set with the redundancy state preference of active in devices groups.

BUnit 1 is set with the redundancy state preference of active in high availability.

CA traffic group is configured with Auto Failback, and Unit 1 is the default device.

DA device group is configured with Auto Failback, and Unit 1 is the default device.

Show Suggested Answer

Suggested Answer: C

by Bulah at Jul 09, 2025, 09:03 PM

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Latrice

4 months ago

I agree, D seems like the right answer here.

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Felix

4 months ago

I thought Auto Failback only applied to traffic groups?

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Emiko

5 months ago

Definitely, it's probably the redundancy state preference.

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Matthew

5 months ago

Wait, so Unit 1 just takes over after a reboot? That's surprising!

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Jacquelyne

5 months ago

Sounds like Unit 1 has a higher priority set.

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Iluminada

5 months ago

I think I read that if a device group is set to Auto Failback, it could cause this behavior. But I'm not confident if it's the device group or traffic group that's relevant here.

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Loreta

5 months ago

I feel like the answer might be related to the default device settings. Wasn't there something about how the default device impacts failover?

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Vincenza

6 months ago

This scenario seems similar to a practice question about failover behavior. I think Auto Failback could be involved here, but I can't recall the specifics.

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Yuriko

6 months ago

I remember studying redundancy preferences, but I'm not entirely sure if it's the device group or high availability settings that take precedence.

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Torie

6 months ago

I'm pretty confident I know the answer to this one. It's got to be option C - the traffic group is set to Auto Failback with Unit 1 as the default device.

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Jules

6 months ago

Okay, I think I know what's going on here. The key is to look at the redundancy state preferences and any auto failback settings that might be configured.

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Barbra

6 months ago

Hmm, I'm a bit confused by the question. I'll need to review my notes on LTM device failover and redundancy to try to determine the right answer.

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Quiana

7 months ago

This seems like a tricky one. I'll need to think through the high availability and redundancy settings to figure out what could be causing the behavior.

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Kaycee

8 months ago

That's a good point, maybe C is the correct answer after all.

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Jerlene

8 months ago

But wouldn't Auto Failback in a traffic group make more sense?

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Ollie

9 months ago

I'm leaning towards B actually.

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Kaycee

9 months ago

I disagree, I believe it's D.

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Leandro

9 months ago

I'm going with C. It makes the most sense given the scenario. Though I wonder if the LTM Specialist has a history of accidentally pressing the 'Activate Me' button on Unit 1.

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