Exam DP-200 topic 1 question 29 discussion

Actual exam question from Microsoft's DP-200

Question #: 29
Topic #: 1

You plan to implement an Azure Cosmos DB database that will write 100,000,000 JSON records every 24 hours. The database will be replicated to three regions.
Only one region will be writable.
You need to select a consistency level for the database to meet the following requirements:
✑ Guarantee monotonic reads and writes within a session.
✑ Provide the fastest throughput.
✑ Provide the lowest latency.
Which consistency level should you select?

A. Strong
B. Bounded Staleness
C. Eventual
D. Session
E. Consistent Prefix

Show Suggested Answer

Suggested Answer: D 🗳️
Session: Within a single client session reads are guaranteed to honor the consistent-prefix (assuming a single ג€writerג€ session), monotonic reads, monotonic writes, read-your-writes, and write-follows-reads guarantees. Clients outside of the session performing writes will see eventual consistency.
Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/consistency-levels

by zenomas at March 27, 2020, 6:50 a.m.

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ivanbtod

Highly Voted 5 years, 2 months ago

I guess Andrea25 could have got this question which i found in another dump where there are three answers but the question is slightly different You plan to deploy an Azure Cosmos DB database that supports multi-master replication. You need to select a consistency level for the database to meet the following requirements: – Provide a recovery point objective (RPO) of less than 15 minutes. – Provide a recovery time objective (RTO) of zero minutes. What are three possible consistency levels that you can select? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point. A . Strong B . Bounded Staleness C . Eventual D . Session E . Consistent Prefix

upvoted 34 times

mickeyisacat615

4 years, 5 months ago

I saw this question in other dump too. CDE would be the three options. To this question, Session is the only option. D is the answer.

upvoted 2 times

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Andrea25

Highly Voted 5 years, 2 months ago

I had this question in my exam. The question ask to choice three of those: - Eventual; - Session; - Consistent Prefix

upvoted 18 times

ivanbtod

5 years, 2 months ago

Andrea25 Were all the questions on the exam from this dump?

upvoted 1 times

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llt

5 years ago

No, the actual exam DOES NOT require to provide 3 answers, I know this question. The keyword is 'monotonic', so the correct answer is SESSION. https://docs.microsoft.com/en-us/azure/cosmos-db/consistency-levels

upvoted 12 times

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Qrm_1972

Most Recent 4 years, 2 months ago

The correct answer is D: Session ------>>> Session consistency is the most widely used consistency level for both single region as well as globally distributed applications. It provides write latencies, availability, and read throughput comparable to that of eventual consistency but also provides the consistency guarantees that suit the needs of applications written to operate in the context of a user

upvoted 3 times

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syu31svc

4 years, 7 months ago

Link supports D as the answer

upvoted 2 times

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zenomas

5 years, 3 months ago

Keyword here is "Guarantee monotonic reads and writes within a session."

upvoted 14 times

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