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AZ-104 Implement and Manage Storage Practice Question

Match each Azure Storage redundancy option to the best description.

Drag a concept onto its matching description — or click a concept then click the description.

Concepts
Matches

Stores three copies of data within one Azure datacenter.

Stores copies across multiple availability zones in one region.

Replicates data to a secondary region, but the secondary copy is not readable.

Replicates data to a secondary region and allows read access to that secondary copy.

Combines zone redundancy in the primary region with geo-replication to a secondary region.

Combines zone redundancy and geo-replication, with readable access to the secondary region.

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

LRS: Data is replicated three times within a single data center.

Each redundancy option provides increasing durability and availability: LRS is lowest cost, ZRS protects against zone failure, GRS adds geo-replication, RA-GRS allows read from secondary, GZRS combines zone and geo, RA-GZRS adds read access to secondary.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    LRS: Data is replicated three times within a single data center.

    Why this is correct

    LRS (Locally Redundant Storage) copies your data synchronously three times within a single physical data center in the primary region. It is the lowest-cost redundancy option, offering significant durability against disk and server failures, but it cannot survive a data center disaster. LRS is appropriate for non-critical workloads or for scenarios where data can be easily reconstructed, since all writes are committed locally without cross-site latency.

  • ✓

    ZRS: Data is replicated synchronously across three Azure availability zones.

    Why this is correct

    ZRS (Zone-Redundant Storage) replicates your data synchronously across three Azure availability zones inside the primary region, so all copies remain online even if an entire zone becomes unavailable. Because the copies are in different physical locations, the storage account survives a full data center failure, but it does not protect against a region-wide outage. This redundancy tier is ideal for high availability within a region, but you would still need geo-replication for disaster recovery.

  • ✓

    GRS: Data is replicated to a paired secondary region asynchronously.

    Why this is correct

    GRS (Geo-Redundant Storage) copies your data asynchronously to a paired secondary region thousands of miles away, giving you protection from full regional outages. Because replication is asynchronous, the secondary copy can lag behind the primary by a defined recovery point objective (RPO), typically 15 minutes, so some recent writes could be lost during an unplanned failover. The secondary endpoint is not available for reads unless you enable RA-GRS or perform a customer-managed failover.

  • ✗

    RA-GRS: Data is replicated across availability zones and also to a secondary region with read access from secondary.

    Why it's wrong here

    This description is actually RA-GZRS, not RA-GRS. Standard RA-GRS replicates data asynchronously to a paired secondary region and grants read access to that secondary, but the primary region copies exist only within a single data center. RA-GRS does not disseminate your data across availability zones; that zone-level resilience is a characteristic of ZRS-based tiers, not the LRS foundation of RA-GRS.

  • ✓

    GZRS: Data is replicated across availability zones and also to a secondary region.

    Why this is correct

    GZRS (Geo-Zone-Redundant Storage) provides maximum durability by combining synchronous zone-redundant replication (three copies across availability zones) with asynchronous geo-replication to a paired secondary region. It ensures your data survives both a zonal failure and a full regional disaster, unlike ZRS or GRS alone. However, in its standard form GZRS does not offer read access to the secondary copy; that capability is reserved for RA-GZRS.

  • ✗

    RA-GZRS: Data is replicated to a secondary region and supports read access from that secondary.

    Why it's wrong here

    This statement describes RA-GRS, not RA-GZRS. RA-GZRS builds on GZRS by adding public read access to the geo-redundant secondary region, meaning it must combine zone redundancy, geo-redundancy, and read-enabled secondary in the underlying storage. The missing piece in this option is the availability-zone replication: RA-GZRS replicates data across three availability zones in the primary region before copying it asynchronously to the secondary.

Go deeper

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Managed Identities for Azure Resources

Key term

ZRS

ZRS (Zone Redundant Storage) is a data storage option in Microsoft Azure that automatically replicates your data across multiple physical locations within a single region to keep it safe even if an entire data center goes down.

Key term

GRS

GRS (Georedundant Storage) is a data replication method that copies your stored data to a secondary region hundreds of miles away to protect against regional disasters.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This AZ-104 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-104 exam.