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Exam 200-901 topic 1 question 103 discussion

Actual exam question from Cisco's 200-901
Question #: 103
Topic #: 1
[All 200-901 Questions]


Refer to the exhibit. A developer cannot reach the web application behind an NGINX load balancer. The developer sends a request to an application FQDN with cURL but gets an HTTP 502 response. Which action solves the problem?

  • A. Fix errors in the server configuration, which is behind the load balancer.
  • B. Bring up the load balancer to the active state.
  • C. Fix errors in the cURL request sent by the client.
  • D. Change the default gateway on the load balancer to an active one.
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Suggested Answer: A 🗳️

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AJ7428
Highly Voted 2 years ago
Should be A. 5xx = Server Error.
upvoted 13 times
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kiev17
Most Recent 7 months, 2 weeks ago
Selected Answer: A
Issue is with the server. Should be A
upvoted 3 times
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evilgoat
1 year, 2 months ago
it's D, Check the server in the response, it's coming FROM the load balancer, meaning it never reaches the server
upvoted 2 times
evilgoat
1 year, 2 months ago
I was mistaken, it's A after more research on this topic, it seems that the answer would come from the load balancer anyways: https://linuxhostsupport.com/blog/how-to-fix-502-bad-gateway-error-in-nginx/
upvoted 3 times
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nunyabeez
1 year, 2 months ago
The answer is definitely not D. 5xx errors are server errors. The load balancer wouldn't be reporting about an actual IP default gateway. That's a layer-3 routing concept that has nothing to do with HTTP response codes.
upvoted 2 times
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nospampls
1 year, 5 months ago
Selected Answer: A
i think A is correct https://www.youtube.com/watch?v=k3U3W4q89tg
upvoted 2 times
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concepcionz
1 year, 5 months ago
Selected Answer: A
The HyperText Transfer Protocol (HTTP) 502 Bad Gateway server error response code indicates that the server, while acting as a gateway or proxy, received an invalid response from the upstream server.
upvoted 3 times
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SR_Cisco
1 year, 5 months ago
Selected Answer: A
Should be A https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/502#:~:text=The%20HyperText%20Transfer%20Protocol%20(HTTP,response%20from%20the%20upstream%20server.
upvoted 2 times
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SierraSix
1 year, 9 months ago
So is the cURL request for hello-api or for hello-app? I can’t tell if the question was formatted corrected or not.
upvoted 1 times
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macxsz
1 year, 10 months ago
Selected Answer: D
I think D makes most sense: A would give 500/501 error B would give 503 error C would give 400 error D makes sense on why cant reach the app behind the load balancear.
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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