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Alibaba Exam ACA-Developer Topic 1 Question 64 Discussion

Actual exam question for Alibaba's ACA-Developer exam
Question #: 64
Topic #: 1
[All ACA-Developer Questions]

A developer is making the ModifyDDInstanceSpec API call to change the specifications of an RDS instance, but the operation fails. Why could this be? (Number of correct answers: 3)

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Suggested Answer: A, B, C

by Xenia at Jul 11, 2024, 01:56 PM

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Gail
5 months ago
I'd say B, C, and D are all valid reasons. Trying to modify an instance with an ongoing backup task? Recipe for disaster!
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Leah
5 months ago
I agree, but C and D could also cause the operation to fail. Backup tasks and disaster recovery instances can be tricky.
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Elenore
5 months ago
I think B is the reason. The request parameters must include the instance type.
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Louis
6 months ago
Haha, A is such a silly answer. Of course you can't modify an instance that's already running, that would be like trying to change the tires on a moving car!
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Beckie
5 months ago
I agree, A) The instance is in the running state is definitely not the reason for the failure.
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Nadine
5 months ago
Yeah, that makes sense. You need to specify what changes you want to make.
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Clorinda
5 months ago
I think the correct answer is B) No instance type (specification) was included in the request parameters
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Jess
6 months ago
I think the instance having a backup task being executed could also cause the operation to fail.
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Lizette
6 months ago
I believe another reason could be that no instance type was included in the request parameters.
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Vernice
6 months ago
I agree with Jean. It makes sense that the instance needs to be stopped before modifying its specifications.
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Jean
6 months ago
I think the operation could fail because the instance is in the running state.
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Rebeca
6 months ago
I agree, B and C are the correct answers. D sounds like a trick question - you shouldn't be able to modify a disaster recovery instance in the first place.
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Eliseo
6 months ago
B and C seem the most likely reasons. You can't modify an instance that's already running, and you also can't modify one that's in the middle of a backup task.
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Tayna
5 months ago
That makes sense. It's important to consider all these factors when making the ModifyDDInstanceSpec API call.
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Willard
6 months ago
True, those are both valid points. Another reason could be if the instance has a backup task being executed.
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Iraida
6 months ago
Yes, that's one of the reasons. Another reason could be if no instance type was included in the request parameters.
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Odette
6 months ago
I think the instance must be in the running state for the operation to fail.
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