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Alibaba ACP-Cloud1 Exam - Topic 5 Question 76 Discussion

When distributing loads to multiple ECS instances with an Alibaba Cloud Server Load Balancer (SLB), you can obtain the real IP addresses of users who initiate the requests through _____________. (Choose two.)
A) For Layer-7 services, SLB obtains the real IP addresses of the visitors by means of HTTP Header: X-Forwarded-For, but the ''Obtain the Visitors Real IP Address'' function must be enabled first. and B) For Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.
C) For Layer-4 services, SLB obtains the real IP addresses of the visitors by means of the HTTP Header: X-Forwarded-For, but the ''Obtain the Visitors Real IP Address'' function must be enabled first.
D) For Layer-7 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

Alibaba ACP-Cloud1 Exam - Topic 5 Question 76 Discussion

Actual exam question for Alibaba's ACP-Cloud1 exam
Question #: 76
Topic #: 5
[All ACP-Cloud1 Questions]

When distributing loads to multiple ECS instances with an Alibaba Cloud Server Load Balancer (SLB), you can obtain the real IP addresses of users who initiate the requests through _____________. (Choose two.)

Show Suggested Answer Hide Answer
Suggested Answer: A, B

In Alibaba Cloud SLB, Layer-7 (HTTP/HTTPS) services require enabling the 'X-Forwarded-For' header to retrieve the real IP address of clients, while Layer-4 (TCP/UDP) services can obtain the real IP address directly without additional settings.


by Levi at Jan 11, 2025, 06:25 AM

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Kenny
9 months ago
C is definitely wrong, Layer-4 doesn't use that header.
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Lettie
9 months ago
D sounds too easy, are you sure about that?
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Alease
10 months ago
I thought Layer-4 needed X-Forwarded-For too?
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Chuck
10 months ago
B is spot on, no extra settings needed for Layer-4.
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Mollie
10 months ago
A is correct, but you need to enable that function first!
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Gladys
10 months ago
I recall that Layer-7 services have some extra steps, but I can't remember if Layer-4 needs anything special.
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Velda
11 months ago
I practiced a similar question, and I feel like X-Forwarded-For is only for Layer-7, but I could be mixing it up with Layer-4.
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Kenia
11 months ago
I think for Layer-4, we can just get the real IPs directly, but I'm not entirely sure if there's anything else we need to do.
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Laura
11 months ago
I remember that for Layer-7, we definitely need to enable the "Obtain the Visitors Real IP Address" function to get the real IPs.
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Valentin
11 months ago
I'm pretty sure the answer is A and B. The key is understanding the difference between Layer-4 and Layer-7 services, and how SLB handles real IP addresses in each case. I feel confident I've got this one figured out.
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Laura
11 months ago
Okay, let me think this through step-by-step. For Layer-7 services, the question says you can get the real IP addresses through the X-Forwarded-For header, but you need to enable a specific function first. And for Layer-4, it seems you can get the real IP addresses directly. So I'll go with A and B as the answer.
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Meghann
11 months ago
Hmm, I'm a bit confused about the difference between Layer-4 and Layer-7 services here. I'll need to review the material on SLB and how it handles real IP addresses in more detail before I can be sure of the answer.
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Edgar
11 months ago
I'm pretty confident about this one. I think the answer is A and B - for Layer-7 services, you need to enable the "Obtain the Visitors Real IP Address" function to get the real IP addresses through the X-Forwarded-For header, and for Layer-4 services, you can get the real IP addresses directly without any additional settings.
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Noel
2 years ago
I'm not sure about option B. I think for Layer-4 services, we still need to enable the function to get the real IP addresses.
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Merissa
2 years ago
I agree with Sheron. Option A makes sense because for Layer-7 services, we need to enable the function to obtain real IP addresses.
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Alexis
2 years ago
Ha! 'Obtain the Visitors Real IP Address' function, what a mouthful. Bet that one trips up a few people.
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Carmen
2 years ago
User 2
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Latrice
2 years ago
User 1
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Sheron
2 years ago
I think the correct options are A and B.
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Alyce
2 years ago
B and D, nice and simple. I'm gonna go with those - no need to complicate things.
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Nikita
2 years ago
B and D, nice and simple. I'm gonna go with those - no need to complicate things.
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Nida
2 years ago
B) For Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.
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Aja
2 years ago
A) For Layer-7 services, SLB obtains the real IP addresses of the visitors by means of HTTP Header: X-Forwarded-For, but the ''Obtain the Visitors Real IP Address'' function must be enabled first.
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Blair
2 years ago
Hmm, Layer-7 services with X-Forwarded-For, that's pretty straightforward. Gotta love those clear-cut options!
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Ludivina
2 years ago
C) For Layer-4 services, SLB obtains the real IP addresses of the visitors by means of the HTTP Header: X-Forwarded-For, but the ''Obtain the Visitors Real IP Address'' function must be enabled first.
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Tran
2 years ago
B) For Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.
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Matt
2 years ago
A) For Layer-7 services, SLB obtains the real IP addresses of the visitors by means of HTTP Header: X-Forwarded-For, but the ''Obtain the Visitors Real IP Address'' function must be enabled first.
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