Alibaba Exam ACA-Operator Topic 4 Question 56 Discussion

Actual exam question for Alibaba's ACA-Operator exam

Question #: 56
Topic #: 4

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 Merissa at Apr 10, 2024, 03:22 PM

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Viki

5 months ago

In Windows, if IIS is used, you can install the 'F5XForwardedFor' extension module to see the visitor's real IP address in IIS logs.

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Buck

5 months ago

That's true. The 'X-Forwarded-For' header contains the visitor's real IP address and can be directly obtained from Apache or NGINX logs.

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Han

5 months ago

I disagree. The visitor's real IP address is actually stored in the 'X-Forwarded-For' HTTP header.

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Kirk

5 months ago

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

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Mica

5 months ago

I agree with Dan, options B) and D) seem to be the most logical choices based on the information provided.

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Corazon

6 months ago

I believe only options B) and D) are correct because they both provide ways to directly obtain the visitor's real IP address.

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Twana

6 months ago

Yes, option D) makes sense too because activating the 'record visitor's real IP' function in Alibaba Cloud CDN console would allow you to view visitor's IP addresses.

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Thurman

7 months ago

I am not sure about that, I think option D) might also be correct.

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Merrilee

7 months ago

I agree, the visitor's real IP address is indeed stored in the 'X-Forwarded-For' HTTP header.

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Twana

7 months ago

I think option B) is correct.

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Yolande

8 months ago

I'm pretty sure IIS has some kind of 'X-Forwarded-For' module, so option C might also be a valid answer. Though I can't say I'm super familiar with the details of how that works.

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Huey

8 months ago

Ah, the age-old question of how to unmask an anonymous internet user. Option A is a bit too extreme, you shouldn't have to modify the entire site just to get an IP address. I think B and D are the way to go here.

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Jina

8 months ago

I'm not too familiar with Alibaba Cloud, but from what I know about CDNs in general, the visitor's IP should be accessible through the proxy server logs. Option B seems like the most straightforward way to get that information.

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Royal

8 months ago

Haha, 'record visitor's real IP' function, that sounds like a feature straight out of a spy movie! But yeah, that does seem like a legit option if you're using Alibaba Cloud CDN.

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Nancey

6 months ago

That's right. The 'X-Forwarded-For' header is quite useful in this scenario.

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Melvin

7 months ago

I think the 'X-Forwarded-For' HTTP header also plays a role in obtaining the real IP address.

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Anjelica

7 months ago

Yes, it's interesting how the 'record visitor's real IP' function works.

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Elfrieda

8 months ago

Hmm, I think options B and D sound like the correct answers. The X-Forwarded-For header is a standard way to pass along the original visitor IP, and the Alibaba Cloud CDN console should provide access to that information as well.

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Tiffiny

8 months ago

This is a tricky question! I'm not sure I fully understand the implications of a CDN and how it might impact the visibility of a visitor's IP address. I'm curious to hear what the other candidates think about this.

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