Question 479 of 1,170

Implement and Manage Storage →easyMultiple SelectObjective-mapped

AZ-104 Implement and Manage Storage Practice Question

This AZ-104 practice question tests your understanding of implement and manage storage. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

A team wants a storage option that stays available if one availability zone in the primary region fails. Which two redundancy options meet that requirement? Select two.

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.

Question 1easymulti select

Full question →

A
Zone-redundant storage (ZRS).
ZRS replicates data across multiple availability zones in the primary region, which helps the storage remain available if one zone fails.
B
Geo-zone-redundant storage (GZRS).
GZRS combines zone redundancy in the primary region with geo-replication to a paired region, so it also meets the zone-failure requirement.
C
Locally redundant storage (LRS).
Why wrong: LRS keeps copies within a single datacenter scale unit, so it does not provide zone-level resilience for a zone outage.
D
Geo-redundant storage (GRS).
Why wrong: GRS adds geo-replication, but it does not provide zone redundancy in the primary region. A single zone failure can still affect the primary copy.
E
Read-access geo-redundant storage (RA-GRS).
Why wrong: RA-GRS provides a readable secondary region, but it does not add zone redundancy in the primary region. It is not the best fit for the zone-failure requirement.

Full breakdown with real-world context →

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

✓

Zone-redundant storage (ZRS).

Zone-redundant storage (ZRS) synchronously replicates data across three Azure availability zones within the primary region. If one zone fails, the data remains accessible from the other zones, ensuring high availability without requiring failover to a secondary region.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

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

✓
Zone-redundant storage (ZRS).
Why this is correct
ZRS replicates data across multiple availability zones in the primary region, which helps the storage remain available if one zone fails.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✓
Geo-zone-redundant storage (GZRS).
Why this is correct
GZRS combines zone redundancy in the primary region with geo-replication to a paired region, so it also meets the zone-failure requirement.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Locally redundant storage (LRS).
Why it's wrong here
LRS keeps copies within a single datacenter scale unit, so it does not provide zone-level resilience for a zone outage.
✗
Geo-redundant storage (GRS).
Why it's wrong here
GRS adds geo-replication, but it does not provide zone redundancy in the primary region. A single zone failure can still affect the primary copy.
✗
Read-access geo-redundant storage (RA-GRS).
Why it's wrong here
RA-GRS provides a readable secondary region, but it does not add zone redundancy in the primary region. It is not the best fit for the zone-failure requirement.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse geo-redundant options (GRS/RA-GRS) as providing zone-level protection, but they only use LRS in the primary region, which does not survive a single availability zone failure.

Detailed technical explanation

How to think about this question

ZRS uses synchronous replication across three zones, ensuring all writes are committed to all copies before acknowledgment, which provides strong consistency within the region. GZRS combines ZRS in the primary region with geo-replication to a secondary region, offering both zone and regional resilience; however, the question specifically asks for redundancy that stays available if one availability zone fails, and both ZRS and GZRS satisfy this because ZRS is the underlying zone-level replication in GZRS.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this AZ-104 question test?

Implement and Manage Storage — This question tests Implement and Manage Storage — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Zone-redundant storage (ZRS). — Zone-redundant storage (ZRS) synchronously replicates data across three Azure availability zones within the primary region. If one zone fails, the data remains accessible from the other zones, ensuring high availability without requiring failover to a secondary region.

What should I do if I get this AZ-104 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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