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Exam 301b topic 1 question 35 discussion

Actual exam question from F5's 301b
Question #: 35
Topic #: 1
[All 301b Questions]

An LTM Specialist must perform a packet capture on a virtual server with an applied standard FastL4 profile. The virtual server 10.0.0.1:443 resides on vlan301.
Which steps should the LTM Specialist take to capture the data payload successfully while ensuring no other virtual servers are affected?

  • A. The standard FastL4 profile should have PVA acceleration disabled. Then the packet capture tcpdump -ni vlan301 should be executed on the command line interface.
  • B. The packet capture tcpdump -ni vlan301 should be executed on the command line interface. There is no need to change profiles or PVA acceleration.
  • C. A new FastL4 profile should be created and applied to the virtual server with PVA acceleration disabled. Then the packet capture tcpdump -ni vlan301 should be executed on the command line interface.
  • D. The LTM device is under light load. The traffic should be mirrored to a dedicated sniffing device. On the sniffing device, the packet capture tcpdump -ni
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by SimonR2 at Aug. 28, 2021, 6:24 a.m.

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GVKD
2 months, 2 weeks ago
C - Correct. Yet another badly worded question...
upvoted 1 times
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SimonR2
2 years, 8 months ago
Although I do agree the answer probably should be C, according to this f5 article the answer is A. “You can work around this limitation by temporarily disabling PVA acceleration for the FastL4 profile, capturing the traffic in a VLAN tcpdump and then re-enabling PVA acceleration for the FastL4 profile.” https://support.f5.com/csp/article/K6546
upvoted 1 times
adriansg90
1 year, 11 months ago
"while ensuring no other virtual servers are affected" I think this is the key for the correct answer, because we don't know if that FastL4 Profile is applied in another Virtual Server, so the recomendation is to create a new one
upvoted 2 times
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