Alibaba Exam ACA-Operator Topic 6 Question 55 Discussion

Actual exam question for Alibaba's ACA-Operator exam

Question #: 55
Topic #: 6

After you enable health checks of Server Load Balancer (SLB), when one backend ECS instance is declared as unhealthy, which of the following statements is correct?

ARequests are forwarded to other normal ECS instances and the unhealthy ECS instance is shutted down

BRequests are forwarded to other normal ECS instances. When the faulty ECS instance becomes normal, SLB forwards requests to the ECS instance again

CRequests are not forwarded to the ECS instances and you get back a 400 error

DRequests are not forwarded to the ECS instances and you get back a 500 error

Show Suggested Answer

Suggested Answer: A, C, D

by Eladia at Mar 16, 2024, 02:09 PM

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Yuki

17 hours ago

D has to be the correct answer. A 500 error indicates a server-side issue, which is exactly what I'd expect when an instance is unhealthy.

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Laurel

3 days ago

I'm going with C. If an instance is unhealthy, it shouldn't be receiving any traffic at all - a 400 error is the logical response.

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Nina

5 days ago

Option B seems the most reasonable. Forwarding requests to other healthy instances while monitoring the unhealthy one for recovery makes the most sense.

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