Data Engineering on Microsoft Azure DP-203 Practice Test 1

Geo-redundant storage (with GRS or GZRS) replicates your data to another physical location in the secondary region to protect against regional outages.
However, that data is available to be read only if the customer or Microsoft initiates a failover from the primary to secondary region. When you enable read access to the secondary region, your data is available to be read at all times, including in a situation where the primary region becomes unavailable.
Incorrect Answers:
A: While Geo-redundant storage (GRS) is cheaper than Read-Access Geo-Redundant Storage (RA-GRS), GRS does NOT initiate automatic failover.
C, D: Locally redundant storage (LRS) and Zone-redundant storage (ZRS) provides redundancy within a single region.
Reference:
https://docs.microsoft.com/en-us/azure/storage/common/storage-redundancy