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Alibaba ACA-Operator Exam - Topic 9 Question 80 Discussion

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.
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. and 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.
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.

Alibaba ACA-Operator Exam - Topic 9 Question 80 Discussion

Actual exam question for Alibaba's ACA-Operator exam
Question #: 80
Topic #: 9
[All ACA-Operator Questions]

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.

Show Suggested Answer Hide Answer
Suggested Answer: B, C

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

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Roxanne
9 months ago
A seems a bit misleading, I thought there were other ways to get the real IP.
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Eulah
9 months ago
C is spot on, that extension is a lifesaver for tracking IPs!
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Aja
10 months ago
Wait, can you really get the real IP without modifying the site? Sounds off.
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Arleen
10 months ago
I think D is also right, pretty sure you can see IPs in the logs.
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Carlee
10 months ago
B is correct, that's how it works!
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Timmy
10 months ago
I feel like modifying the site is a common requirement, but I can't remember if it's the only way to get the real IP.
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Latrice
11 months ago
I'm a bit confused about the IIS extension. I feel like I read about it, but I can't recall if it's necessary for logging real IPs.
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Brittani
11 months ago
I think option D sounds familiar; I practiced a question about enabling features in the Alibaba Cloud CDN console.
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Audry
11 months ago
I remember something about the 'X-Forwarded-For' header being important for tracking real IPs, but I'm not sure if it's the only way.
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Magnolia
11 months ago
This looks straightforward. The correct answers are B and D - the visitor's real IP can be found in the logs, either through the 'X-Forwarded-For' header or by enabling the 'record visitor's real IP' function in the CDN console.
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Caitlin
11 months ago
I'm a bit confused about the difference between modifying the site and using the CDN console. I'll need to review the details on those options.
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Catalina
11 months ago
Okay, I think I've got a good handle on this. The key is understanding how the 'X-Forwarded-For' header works and where to find the visitor's real IP in the logs.
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Howard
11 months ago
Hmm, this seems like a tricky one. I'll need to carefully read through the options and think about how Alibaba Cloud CDN handles visitor IP addresses.
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Lourdes
1 year 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
1 year 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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Mattie
1 year ago
Activating the 'record visitor's real IP' function in the Alibaba Cloud CDN console seems like the easiest way to view visitor's IP addresses.
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Lashon
1 year ago
Yes, the visitor's real IP address is indeed stored in the 'X-Forwarded-For' HTTP header.
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Shad
1 year ago
I think B and D are the correct options.
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Effie
1 year 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
1 year ago
I agree with Chan, because the real IP address is usually stored in the 'X-Forwarded-For' header.
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Afton
1 year 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
1 year 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
1 year 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 year ago
I think the correct answers are B and D.
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Gail
2 years 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
1 year 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
1 year 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
1 year 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
2 years 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
1 year 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 year ago
I agree, the visitor's real IP address can be found in the 'X-Forwarded-For' header.
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