Exam DP-420 topic 2 question 2 discussion

Actual exam question from Microsoft's DP-420

Question #: 2
Topic #: 2

HOTSPOT -
You have an Azure Cosmos DB Core (SQL) API account named storage1 that uses provisioned throughput capacity mode.
The storage1 account contains the databases shown in the following table.

The databases contain the containers shown in the following table.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

Show Suggested Answer

Suggested Answer:

Box 1: No -
Four containers with 1000 RU/s each.

Box 2: No -
Max 8000 RU/s for db2. 8 containers, so 1000 RU/s for each container.

Box 3: Yes -
Max 8000 RU/s for db2. 8 containers, so 1000 RU/s for each container. Can very well add an additional container.
Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/plan-manage-costs https://azure.microsoft.com/en-us/pricing/details/cosmos-db/

by ognamala at Aug. 15, 2022, 12:51 p.m.

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ognamala

Highly Voted 2 years, 9 months ago

Answers are correct but the reasoning for the first answer makes no sense - at minimum you will be charged 10% x 5000 = 500 (db autoscale) + 10% x 10,000 (container 1 autoscale) = 1500 in total

upvoted 21 times

Zaytsev

2 years, 1 month ago

You are only counting one container. If you had the four left on db1, you get 4000+1500= 5500 minimum.

upvoted 2 times

Rifelo

11 months, 2 weeks ago

it's not correct i think. the count is: 5000 ru for db1 and 5 container, so 1000 run x container. We know that the minimun billed is 0.1 x Tmax: Each hour, you're billed for the highest throughput T the system scaled to within that hour. If your resource had no requests during the hour or didn't scale beyond 0.1 × Tmax, you're billed for the minimum of 0.1 × Tmax. So the count is: 0.1 x 1000 ru (x container) x 5 = 500. Autoscale is 10.000 ru so 0.1 x 10.000 = 1000. total is 1500.

upvoted 2 times

biglebowski88

5 months, 3 weeks ago

I believe the autoscaled 10,000 one takes precendent in billing over the shared ones so i think the min is just 10% of 10,000. 1000 RU/s

upvoted 1 times

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AshishKu

Most Recent 1 year, 8 months ago

For db1 minimum RUs 1500 will be billed. 500 RU at database level and 1000 at container level.

upvoted 1 times

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