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Exam DP-420 topic 1 question 47 discussion

Actual exam question from Microsoft's DP-420
Question #: 47
Topic #: 1
[All DP-420 Questions]

You plan to create an Azure Cosmos DB for NoSQL account that will have a single write region and three read regions.

You need to set the consistency level for the account. The solution must meet the following requirements:

• In the write region, writes must replicate synchronously across at least three replicas.
• In the read regions, reads must see writes in order for transactional batches.
• Throughput for reads and writes must be maximized.

Which consistency level should you select?

  • A. Consistent Prefix
  • B. Bounded Staleness
  • C. Eventual
  • D. Strong
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Suggested Answer: D 🗳️

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WimTS
6 days, 5 hours ago
Selected Answer: A
Why not Consistent Prefix: reads must appear in order, and throughput must be maximized, which is not the case with Strong. In every region, writes are done to 3 replicas automatically.
upvoted 1 times
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Examdumps2023
10 months ago
Selected Answer: D
Strong: Ensures that reads always return the most recent write. Provides a linearizability guarantee, meaning writes are synchronously replicated to all replicas before acknowledgment. Ensures that reads are guaranteed to see the most recent writes, which aligns with the requirement for transactional batches.
upvoted 1 times
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[Removed]
11 months, 3 weeks ago
Selected Answer: D
In the write region, writes must replicate synchronously across at least three replicas. Only the Strong consistency provides the synch writing, all others are async. Therefore Strong is the answer.
upvoted 3 times
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