Alibaba Exam ACA-Operator Topic 5 Question 77 Discussion

Actual exam question for Alibaba's ACA-Operator exam

Question #: 77
Topic #: 5

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 Margurite at Jan 09, 2025, 08:42 AM

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Yolande

1 months ago

Haha, I bet the exam writer had a good laugh coming up with these answer choices. Clearly, B and D are the correct ones, but I kind of want to see what kind of nightmare scenario they'd come up with for option A.

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Casie

3 days ago

Yeah, it's interesting to think about the different ways to obtain a visitor's real IP address.

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Giuseppe

5 days ago

I think option A would involve some kind of complex server-side scripting.

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Naomi

16 days ago

I wonder what kind of modification would be needed for option A to be correct.

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Jaclyn

19 days ago

I agree, B and D seem like the most practical options.

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Deeanna

2 months ago

This is a pretty straightforward question. B and D are the right answers, no doubt about it. I wonder if they'll ask about the maximum number of IP addresses in the 'X-Forwarded-For' header next.

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Florinda

1 months ago

I hope they don't ask about the maximum number of IP addresses in the 'X-Forwarded-For' header.

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Jeanice

1 months ago

I agree, B and D are the correct answers.

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Marlon

1 months ago

I hope they don't ask about the maximum number of IP addresses in the 'X-Forwarded-For' header.

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Marylin

1 months ago

I agree, B and D are the correct answers.

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Louisa

2 months ago

I'm not sure about C, but I think B and D make sense. It's good to have multiple ways to access visitor's IP addresses for different scenarios.

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Kami

2 months ago

I think the correct answers are B and D. The 'X-Forwarded-For' header and the 'record visitor's real IP' function in the Alibaba Cloud CDN console both provide access to the visitor's real IP address.

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