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Exam 301b All Questions

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Exam 301b topic 1 question 143 discussion

Actual exam question from F5's 301b
Question #: 143
Topic #: 1
[All 301b Questions]

-- Exhibit

-- Exhibit --
Refer to the exhibit.
Users receive an error when attempting to connect to the website https://website.com. The website has a DNS record of 195.56.67.90. The upstream ISP has confirmed that there is nothing wrong with the routing between the user and the LTM device.
The following tcpdump outputs have been captured:
External Vlan, filtered on IP 168.210.232.5
00:25:07.598519 IP 168.210.232.5.33159 > 195.56.67.90.https: S 1920647964:1920647964(0) win 8192 <mss 1450,nop,nop,sackOK>
00:25:07.598537 IP 195.56.67.90.https > 168.210.232.5.33159: S 2690691360:2690691360(0) ack 1920647965 win 4350 <mss 1460,sackOK,eol>
00:25:07.598851 IP 168.210.232.5.33160 > 195.56.67.90.https: S 2763858764:2763858764(0) win 8192 <mss 1450,nop,nop,sackOK>
00:25:07.598858 IP 195.56.67.90.https > 168.210.232.5.33160: S 1905576176:1905576176(0) ack 2763858765 win 4350 <mss 1460,sackOK,eol>
Internal Vlan, filtered on IP 168.210.232.5
00:31:46.171124 IP 168.210.232.5.33202 > 192.168.100.20.http: S 2389057240:2389057240(0) win 4380 <mss 1460,nop,wscale 0,sackOK,eol>
What is the problem?

  • A. The filters on the tcpdumps are incorrect.
  • B. The DNS entry for website.com is incorrect.
  • C. The virtual server 'WEBSERVICES1' is listening on the incorrect port.
  • D. The firewall is dropping the connection coming from the pool members returned to the client.
  • E. The subnet masks of the pool members of pool WebServices1 and the f5 'Internal' Vlan are incorrect.
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Suggested Answer: D 🗳️
by GVKD at Feb. 13, 2024, 1:24 a.m.

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GVKD
4 months, 4 weeks ago
D - Correct
upvoted 1 times
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