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Exam 301b All Questions

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Exam 301b topic 1 question 158 discussion

Actual exam question from F5's 301b
Question #: 158
Topic #: 1
[All 301b Questions]

-- Exhibit

-- Exhibit --
Refer to the exhibit.
A layer 2 nPath routing configuration has been deployed. A packet capture contains a client connection packet with the following properties:
Source IP: <Virtual Server>
Destination IP: <Client A>
At which two locations could the packet capture have been taken? (Choose two.)

  • A. the network interface of web server
  • B. the DMZ interface of the Internet firewall
  • C. the internal interface of the Internet firewall
  • D. the external VLAN interface of the LTM device
Show Suggested Answer Hide Answer
Suggested Answer: AC 🗳️
by Degenhardt at Nov. 12, 2020, 9:38 a.m.

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GVKD
8 months, 4 weeks ago
AC - Probably - weird question as it depends on the routing tables of the Firewall and Internal Router which we dont see.
upvoted 1 times
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estampie
3 years, 3 months ago
For L2 nPath routing, will need to configure the same IP address (VIP address) on an interface of web server (usually the loopback interface). Later when the client receives the packet returned directly by the server, it knows that it should talk with VIP again, which ensures the traffic goes to VS on BIGIP again.
upvoted 1 times
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Degenhardt
3 years, 12 months ago
Feels somehow wrong. I'd rather say B and D, because I don't see a chance to get a packet with those addresses on this path. Source IP = Virtual Server makes perfectly sense on the external VLAN of the BIGIP
upvoted 1 times
Degenhardt
3 years, 12 months ago
Okay... nPath seems to be the turning point. Didn't heart that before. https://support.f5.com/csp/article/K11116 Suggested Answers A and C are correct, i guess.
upvoted 5 times
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Renan_Custodio
3 years, 5 months ago
if in the question I have not talked about npath, I would also answer B and D, it's an ugly trick
upvoted 1 times
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