DP-420 · Question #156
You have an Azure subscription that contains an Azure Cosmos DB for NoSQL account named account1. Backups for account1 have the following configurations: - Interval: 2 hours - Retention period: 4…
The correct answer is C. 46. Given a 2-hour backup interval and 4-day retention period for an Azure Cosmos DB for NoSQL account, 46 backup copies will incur additional charges after accounting for the two free backups.
Question
You have an Azure subscription that contains an Azure Cosmos DB for NoSQL account named account1. Backups for account1 have the following configurations:
- Interval: 2 hours
- Retention period: 4 days
You need to estimate the charges associated with the retention of the backups. How many copies of the backups will incur additional charges?
Options
- A8
- B12
- C46
- D48
How the community answered
(25 responses)- A8% (2)
- B12% (3)
- C76% (19)
- D4% (1)
Why each option
Given a 2-hour backup interval and 4-day retention period for an Azure Cosmos DB for NoSQL account, 46 backup copies will incur additional charges after accounting for the two free backups.
This number is significantly lower than the total backups stored, indicating an incorrect calculation of retention or free backups.
This number is significantly lower than the total backups stored, indicating an incorrect calculation of retention or free backups.
For a 4-day retention period with backups every 2 hours, there are 4 days * 24 hours/day / 2 hours/backup = 48 total backups. Azure Cosmos DB's standard backup policy includes the latest two backups for free, so 48 - 2 = 46 backups will incur additional charges.
This is the total number of backups stored but does not account for the two free backups included in the standard policy.
Concept tested: Azure Cosmos DB backup pricing and retention policy
Source: https://learn.microsoft.com/azure/cosmos-db/backup-restore?tabs=portal#backup-storage-consumption
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