F5 Networks 301b Exam - Topic 1 Question 112 Discussion

Actual exam question for F5 Networks's 301b exam

Question #: 112
Topic #: 1

[All 301b Questions]

An LTM Specialist is troubleshooting an issue with a new virtual server. When connecting through the virtual server, clients receive the message "Unable to connect" in the browser, although connections directly to the pool member show the application is functioning correctly. The LTM configuration is:

ltm virtual /Common/vs_https {

destination /Common/10.10.1.110:443

ip-protocol udp

mask 255.255.255.255

pool /Common/pool_https

profiles {

/Common/udp { }

}

translate-address enabled

translate-port enabled

vlans-disabled

}

ltm pool /Common/pool_https {

members {

/Common/172.16.20.1:443 {

address 172.16.20.1

}

How should the LTM Specialist resolve this issue?

ARemove an HTTP monitor from the pool.

BAdd an HTTP profile to the virtual server.

CEnable the pool member on the correct VLAN.

DSelect the correct protocol for the virtual server.

Show Suggested Answer

Suggested Answer: D

by Shoshana at Jun 14, 2025, 12:01 PM

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Lashawna

2 months ago

Adding an HTTP profile sounds like a solid move.

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Xochitl

2 months ago

Totally agree, switching to TCP would fix this!

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Domitila

3 months ago

Disagree, I think enabling the pool member on the right VLAN is key.

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Stefany

3 months ago

Wait, why is UDP even being used here? Seems off.

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Estrella

3 months ago

The virtual server is using UDP, but HTTP needs TCP.

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Marjory

3 months ago

I keep thinking about the UDP protocol in this configuration. It feels off for a web application, so option D might actually be the best way to resolve the issue.

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Carrol

4 months ago

I thought we learned that adding an HTTP profile could help with connection issues, but I can't recall if it applies here. Option B seems plausible, but I'm not confident.

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Theron

4 months ago

I'm not entirely sure, but I feel like we practiced a similar question where enabling the pool member on the correct VLAN was the key. So maybe option C could be worth considering.

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Ivory

4 months ago

I remember we discussed the importance of matching the protocol for virtual servers. I think option D might be the right choice since it mentions selecting the correct protocol.

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Veda

4 months ago

I'm a bit confused by the pool configuration. Maybe I should double-check that the pool member is enabled and accessible on the correct VLAN.

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Carry

4 months ago

I think the key here is to match the virtual server protocol to the client traffic. Changing the protocol to TCP or HTTP/HTTPS should resolve the "Unable to connect" error.

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Devorah

5 months ago

Okay, let's see here. The virtual server is set to UDP, but the clients are connecting through a browser, which typically uses HTTP/HTTPS. That could be the issue.

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Kimberlie

5 months ago

Hmm, this one seems tricky. I'll need to carefully review the configuration details to figure out what's going on.

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Denise

7 months ago

Okay, let's think this through. The clients can't connect, but the pool member is working fine. That points to a configuration issue, and the protocol mismatch is the most likely culprit. D) is the way to go, unless the LTM Specialist is feeling particularly mischievous and wants to try B) just to see what happens. *chuckles*

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Chaya

6 months ago

Let's go with D) and see if that resolves the problem.

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Carrol

6 months ago

Yeah, I agree. It seems like the protocol mismatch is causing the issue.

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Blair

7 months ago

I think D) Select the correct protocol for the virtual server is the best option here.

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Cyril

7 months ago

Ha! The LTM Specialist must have been daydreaming when they set this up. UDP for a web server? That's a bold move, Cotton. D) is the obvious choice, unless they want to make it even more interesting by trying C) and enabling the VLAN. *shakes head*

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Noah

7 months ago

Hmm, I'm not sure about this one. The configuration looks a bit strange, but I think the key is the protocol mismatch. D) is the way to go, unless the LTM Specialist is really feeling adventurous and wants to try B) just for fun.

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Jestine

7 months ago

The issue is clearly with the protocol. The virtual server is set to use UDP, but the pool member is probably expecting TCP/HTTP. D) Select the correct protocol for the virtual server seems like the right answer here.

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