Alibaba ACP-Cloud1 Exam - Topic 5 Question 76 Discussion

Actual exam question for Alibaba's ACP-Cloud1 exam

Question #: 76
Topic #: 5

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.)

AFor 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.

BFor Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

CFor 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.

DFor Layer-7 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

Show Suggested 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

5 months ago

C is definitely wrong, Layer-4 doesn't use that header.

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Lettie

5 months ago

D sounds too easy, are you sure about that?

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Alease

5 months ago

I thought Layer-4 needed X-Forwarded-For too?

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Chuck

5 months ago

B is spot on, no extra settings needed for Layer-4.

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Mollie

6 months ago

A is correct, but you need to enable that function first!

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Gladys

6 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

6 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

6 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

6 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

6 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

6 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

6 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

6 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

1 year 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

1 year 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

1 year 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

1 year ago

User 2

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Latrice

1 year ago

User 1

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Sheron

1 year ago

I think the correct options are A and B.

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Alyce

1 year ago

B and D, nice and simple. I'm gonna go with those - no need to complicate things.

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Nikita

1 year ago

B and D, nice and simple. I'm gonna go with those - no need to complicate things.

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Nida

1 year ago

B) For Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

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Aja

1 year 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

1 year ago

Hmm, Layer-7 services with X-Forwarded-For, that's pretty straightforward. Gotta love those clear-cut options!

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Ludivina

1 year 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

1 year ago

B) For Layer-4 services, you can obtain the visitors' real IP addresses directly, without any additional settings.

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Matt

1 year 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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