Exam DP-420 topic 1 question 2 discussion

Vote YNN

1:No 2:Yes 3:No

Y-N-N (ChatGPT verified with correct explanation)

If the account has a single write, how do these commands impact the number of databases or writable ones? There is ONLY one primary database , there is no other database.

Answer is YNN

Which is the right answer totally confused .

1-Y 2-N 3-Y failover_priority - (Required) The failover priority of the region. A failover priority of 0 indicates a write region. The maximum value for a failover priority = (total number of regions - 1). Failover priority values must be unique for each of the regions in which the database account exists. Changing this causes the location to be re-provisioned and cannot be changed for the location with failover priority 0.

The anwser are correct. A failover priority of 0 indicates a write region. The price of West Euro and North Euro for Costome DB is just exactly the same. You may check it with Azure Pricing Calculator: https://azure.microsoft.com/en-us/pricing/calculator/

Answer should be No - After running the script, there will not be an instance of Azure Cosmos DB in North Europe that is writable. The script sets the failover priority of North Europe to 0, indicating that it is a secondary region and not writable. Yes - After running the script, the Azure Cosmos DB instance in West Europe will still be writable. The script does not change the failover priority or zone redundancy of the West Europe region, so it remains the primary region and writable. Yes - The cost of the Azure Cosmos DB account is unaffected by running the script. The script only modifies the configuration and failover policies of the account, but it does not change the pricing or billing aspects of the account.

A failover priority of 0 indicates a write region (https://learn.microsoft.com/en-us/rest/api/cosmos-db-resource-provider/2021-04-01-preview/database-accounts/failover-priority-change?tabs=HTTP) Knowing this, North Europe is now 0 so write region, first answer is thus Yes. West Europe is now 1 and we did not enable multiple write regions so we can no longer write to west europe and costs haven't increased as it is still a single write region. YNN

bah , not clear at all

Yes - triggering a manual failover by changing priority zero causes write and read regions to be swapped No - triggering a manual failover by changing priority zero causes write and read regions to be swapped Yes - unaffected only because we are switching between west and north europe, if it was say switzerland it would be more expensive

Why option C is yes??

The third statement here is tricky. Normally, Azure resource price is different for regions, this applicable to Cosmos DB as well. However, the price of West Euro and North Euro for Costome DB is just exactly the same. You may check it with Azure Pricing Calculator: https://azure.microsoft.com/en-us/pricing/calculator/

IMO C should be No