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F5 Networks 301b Exam - Topic 4 Question 117 Discussion

An LTM device is monitoring pool members on port 80. The LTM device is using an HTTP monitor with a send string of GET / and a blank receive string.What would cause the pool members to be marked down?
E) A pool member does NOT acknowledge the connection SYN on port 80.
A) A pool member responds with an HTTP 200 series response code.
B) A pool member responds with an HTTP 300 series response code.
C) A pool member responds with an HTTP 400 series response code.
D) A pool member responds with an HTTP 500 series response code.

F5 Networks 301b Exam - Topic 4 Question 117 Discussion

Actual exam question for F5 Networks's 301b exam
Question #: 117
Topic #: 4
[All 301b Questions]

An LTM device is monitoring pool members on port 80. The LTM device is using an HTTP monitor with a send string of GET / and a blank receive string.

What would cause the pool members to be marked down?

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Suggested Answer: E

by Janine at Nov 23, 2025, 04:13 AM

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Claudia
2 months ago
But if it’s not acknowledging, E is definitely a reason to mark it down.
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Susy
2 months ago
I lean towards A. A 200 response should keep it up, not down.
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Heike
2 months ago
True, but I feel E is also a strong contender. No SYN means down.
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Shaun
2 months ago
I agree, C makes sense. It indicates a bad request.
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Cora
2 months ago
I think option C is the answer. 400 series means client error.
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Thomasena
3 months ago
Not sure about that, seems odd to mark down for a 300.
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Tarra
3 months ago
Wait, can a 300 response really cause issues?
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Chauncey
3 months ago
A pool member should be fine with a 200 response, right?
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Jamie
4 months ago
I think E is also a valid reason.
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Pete
4 months ago
Wait, so the LTM device is monitoring the pool members like a lifeguard watching a pool full of pool members? That's a lot of monitoring!
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Bobbye
4 months ago
Hmm, I wonder if the pool members are feeling a bit under the weather with those 400 and 500 series responses.
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Geoffrey
4 months ago
E) A pool member does NOT acknowledge the connection SYN on port 80.
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Lera
4 months ago
D) A pool member responds with an HTTP 500 series response code.
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Mayra
4 months ago
C) A pool member responds with an HTTP 400 series response code.
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Phil
5 months ago
I’m a bit confused about the HTTP response codes. I guess a 200 is okay, but I’m not sure about the 300s. I should probably double-check that!
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Devon
5 months ago
I practiced a similar question, and I feel like if the member doesn't acknowledge the SYN, that could also lead to a down status. It's about connectivity, I think.
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Willis
5 months ago
I'm not entirely sure, but I remember something about HTTP 300 responses being redirections. Maybe those wouldn't mark the pool member down?
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Mari
5 months ago
I think if a pool member responds with an HTTP 400 or 500 series code, it would definitely mark them down, right? Those indicate client and server errors.
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Mirta
5 months ago
Hmm, this is a tricky one. I'm torn between B and D. A 300 series response could indicate a redirect, which might not be what the monitor is expecting. But a 500 series error would definitely be a server-side issue. I'll have to think about this a bit more.
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Angelo
5 months ago
C and D would definitely mark them down.
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Temeka
6 months ago
I'm pretty confident the answer is C. A 400 series response code would indicate a client error, which should be enough to trigger the LTM device to mark the pool member as down.
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Adelle
6 months ago
Okay, let me think this through. The monitor is looking for a specific GET / request, and a blank receive string. So if the pool member doesn't respond at all, that would likely cause it to be marked down, right? I'll go with E.
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Sage
6 months ago
What about D? 500 series means server error, right?
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Brianne
6 months ago
I'm a bit confused here. Wouldn't a 200 series response code, indicating a successful HTTP request, be what the LTM device is looking for? I'm not sure about this one.
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Bettyann
7 months ago
Hmm, this seems straightforward. I think the answer is D - a 500 series response code would indicate a server error, which should cause the LTM device to mark the pool member down.
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Chau
1 month ago
I think E is also a valid point. No SYN acknowledgment means it's not reachable.
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Joni
1 month ago
True, but a 400 series shouldn't mark it down if the monitor is set correctly.
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Shaun
1 month ago
But what about a 400 series? That indicates a client error, right?
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Irma
2 months ago
I agree with you, USERNAME. A 500 error means something's wrong on the server side.
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Andra
6 months ago
All good points! But I still think D is the most clear-cut reason for a down status.
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