Arcitura Education Exam S90.02 Topic 3 Question 83 Discussion

Actual exam question for Arcitura Education's S90.02 exam

Question #: 83
Topic #: 3

Using WS-AtomicTransaction you wrap 3 SOAP-based Web services in a single transaction. When it is time to vote on the outcome of the transaction, 2 of the services vote to commit the changes made during the transaction, but a vote from the third service is not received. What will happen? Select the correct answer.

AThe changes are committed because the transaction is considered successful as long as no Abort votes are received.

BThe changes are rolled back because the transaction is considered unsuccessful when there is a missing vote.

CThe changes are committed because the transaction is considered successful as long as one Commit vote is received.

DThe changes are aborted because a transaction can only be considered successful when more than 2 Commit votes are received.

Show Suggested Answer

Suggested Answer: B

by Henriette at Oct 21, 2024, 05:12 AM

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Sanda

5 months ago

Ah, the joys of distributed transactions. I bet the developer who wrote this code is having a headache right about now!

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Tashia

4 months ago

C) The changes are committed because the transaction is considered successful as long as one Commit vote is received.

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Kenneth

4 months ago

B) The changes are rolled back because the transaction is considered unsuccessful when there is a missing vote.

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Gail

4 months ago

A) The changes are committed because the transaction is considered successful as long as no Abort votes are received.

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Kandis

5 months ago

D sounds like the right answer to me. A transaction needs a majority of Commit votes to be successful, and that's not the case here.

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Gerald

4 months ago

So even if the third service eventually votes to commit, it would be too late to change the outcome of the transaction.

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Mendy

4 months ago

If the third service is delayed, the changes would still be aborted because we need a majority of Commit votes.

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Nada

4 months ago

But what if the third service is just delayed in sending its vote? Would the changes still be aborted?

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Dante

5 months ago

I think D is the correct answer too. We need more than 2 Commit votes for the transaction to be successful.

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Dottie

5 months ago

I believe the changes will be committed because as long as no Abort votes are received, the transaction is successful.

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Tricia

5 months ago

Hmm, I'm not so sure about that. Doesn't the transaction succeed as long as there are more Commit votes than Abort votes? I'll go with C.

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Micah

5 months ago

I think the answer is B. The transaction is considered unsuccessful without a vote from all three services, so the changes should be rolled back.

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Ellen

4 months ago

User4: I'm not sure, but I think the changes are aborted if more than 2 Commit votes are not received.

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Eleonore

4 months ago

User3: I think the answer is C. The transaction is successful as long as one Commit vote is received.

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Colette

4 months ago

User2: I disagree, I believe the changes are committed as long as no Abort votes are received.

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Markus

5 months ago

I think the answer is B. The transaction is considered unsuccessful without a vote from all three services, so the changes should be rolled back.

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Arlene

5 months ago

I think the changes will be rolled back because one vote is missing.

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