Alibaba Exam ACA-Operator Topic 9 Question 80 Discussion

Actual exam question for Alibaba's ACA-Operator exam

Question #: 80
Topic #: 9

When using Alibaba Cloud CDN, a visitor's request will first be routed to a CDN edge node, and in the event of a cache miss at this edge node, the node will fetch data from the origin site (back-to-source request). Even with this redirection, it is possible for the origin site to see the visitor's real IP address. Which of the following statements about obtaining the visitor's real IP address are correct? (Number of correct answers: 2)

A visitor's real IP address can only be obtained by modifying the site or web application.

Bvisitor's real IP address is stored in the 'X-Forwarded-For' HTTP header. It can be directly obtained via Apache or NGINX logs.

CIn Windows, if IIS is used, after installing the 'F5XForwardedFor' extension module, the visitor's real IP address can be seen via IIS logs.

DYou can activate the 'record visitor's real IP' function in the Alibaba Cloud CDN console, then you can directly view visitor's IP addresses from the Alibaba Cloud CDN access logs.

Show Suggested Answer

Suggested Answer: B, C

by Charlie at Mar 07, 2025, 06:20 AM

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Lourdes

13 days ago

I hope the correct answer isn't hidden behind a paywall or something. Alibaba Cloud sure loves their premium features!

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Gerri

14 days ago

I'm going with B and D. Seems like the most straightforward way to get the visitor's real IP address when using Alibaba Cloud CDN.

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Effie

17 days ago

I'm not sure about C, but I think activating the 'record visitor's real IP' function in Alibaba Cloud CDN console is a good way to obtain the IP address.

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Glendora

18 days ago

I agree with Chan, because the real IP address is usually stored in the 'X-Forwarded-For' header.

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Afton

20 days ago

Haha, I bet the developer who wrote option A has never heard of 'X-Forwarded-For' before. Good luck trying to get the real IP without that!

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Adelaide

2 days ago

C) In Windows, if IIS is used, after installing the \'F5XForwardedFor\' extension module, the visitor's real IP address can be seen via IIS logs.

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Trinidad

9 days ago

B) visitor's real IP address is stored in the \'X-Forwarded-For\' HTTP header. It can be directly obtained via Apache or NGINX logs.

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Chan

1 months ago

I think the correct answers are B and D.

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Gail

1 months ago

Option C is interesting, but I'm not sure if it's applicable in this case since we're talking about Alibaba Cloud CDN, not a local web server.

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Ellen

10 days ago

Option C is interesting, but I'm not sure if it's applicable in this case since we're talking about Alibaba Cloud CDN, not a local web server.

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Jules

11 days ago

D) You can activate the `record visitor's real IP` function in the Alibaba Cloud CDN console, then you can directly view visitor's IP addresses from the Alibaba Cloud CDN access logs.

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Mitsue

14 days ago

B) visitor's real IP address is stored in the `X-Forwarded-For` HTTP header. It can be directly obtained via Apache or NGINX logs.

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Marion

1 months ago

I think the answer is B and D. The visitor's real IP address is stored in the 'X-Forwarded-For' header, and Alibaba Cloud CDN provides an option to record the real IP address in their access logs.

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Celia

26 days ago

Yes, and you can also activate the 'record visitor's real IP' function in the Alibaba Cloud CDN console to view visitor's IP addresses.

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Gertude

1 months ago

I agree, the visitor's real IP address can be found in the 'X-Forwarded-For' header.

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