Microsoft AZ-305 Storage Performance and Data Protection Practice Test

 

Topic 11 focuses on Storage Performance, Cost, Durability, and Data Protection for the Microsoft Certified: Azure Solutions Architect Expert certification and the AZ-305 exam, using Microsoft Azure solution-architecture scenarios. For broader exam preparation, review the Microsoft Azure Solutions Architect Expert AZ-305 Exam Dumps page. Each question includes a concise explanation of the correct answer and the technical reason the other choices are incorrect.

Question 1

To recover earlier object versions after accidental overwrite or deletion, which Azure design option should be selected?

1. Blob soft delete
2. Object replication
3. Blob versioning
4. Zone-redundant storage (ZRS)

Correct Answer: C

 

Correct Answer

Answer C is correct because Blob versioning keeps previous versions when supported blobs are modified or deleted. It directly meets the requirement to recover earlier object versions after accidental overwrite or deletion.

Incorrect Answers

Answer A is incorrect because Blob soft delete is used to recover accidentally deleted object data during the retention window; that does not directly satisfy the requirement in this scenario.

Answer B is incorrect because Object replication is used to maintain application-controlled object copies across accounts or regions; that does not directly satisfy the requirement in this scenario.

Answer D is incorrect because Zone-redundant storage (ZRS) is used to protect storage against a zone failure while keeping data in one region; that does not directly satisfy the requirement in this scenario.

 

Question 2

Which Azure capability keeps previous versions when supported blobs are modified or deleted?

1. Blob soft delete
2. Object replication
3. Zone-redundant storage (ZRS)
4. Blob versioning

Correct Answer: D

 

Correct Answer

Answer D is correct because Blob versioning matches the described capability and is intended to recover earlier object versions after accidental overwrite or deletion.

Incorrect Answers

Answer A is incorrect because Blob soft delete is intended to recover accidentally deleted object data during the retention window, which is a different architectural function.

Answer B is incorrect because Object replication is intended to maintain application-controlled object copies across accounts or regions, which is a different architectural function.

Answer C is incorrect because Zone-redundant storage (ZRS) is intended to protect storage against a zone failure while keeping data in one region, which is a different architectural function.

 

Question 3

To automatically optimize object storage cost over the data lifecycle, which Azure design option should be selected?

1. Blob lifecycle management
2. Locally redundant storage (LRS)
3. Blob versioning
4. Immutable Blob Storage

Correct Answer: A

 

Correct Answer

Answer A is correct because Blob lifecycle management is designed to automatically optimize object storage cost over the data lifecycle. Blob lifecycle management uses rules to transition blobs to lower-cost tiers or delete them based on age and conditions.

Incorrect Answers

Answer B is incorrect because Locally redundant storage (LRS) can be useful in Azure architectures, but its primary role is to provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required; it is not the best match for the stated priority.

Answer C is incorrect because Blob versioning can be useful in Azure architectures, but its primary role is to recover earlier object versions after accidental overwrite or deletion; it is not the best match for the stated priority.

Answer D is incorrect because Immutable Blob Storage can be useful in Azure architectures, but its primary role is to meet write-once-read-many retention and compliance requirements; it is not the best match for the stated priority.

 

Question 4

When considering Geo-redundant storage (GRS), which requirement supports that choice?

1. To recover accidentally deleted object data during the retention window.
2. To provide regional durability beyond the primary region.
3. To protect against both primary-region zone failure and regional disaster.
4. To automatically optimize object storage cost over the data lifecycle.

Correct Answer: B

 

Correct Answer

Answer B is correct because Geo-redundant storage (GRS) replicates primary-region LRS data asynchronously to a paired secondary region.

Incorrect Answers

Answer A is incorrect because that outcome is more directly associated with Blob soft delete, not Geo-redundant storage (GRS).

Answer C is incorrect because that outcome is more directly associated with Geo-zone-redundant storage (GZRS), not Geo-redundant storage (GRS).

Answer D is incorrect because that outcome is more directly associated with Blob lifecycle management, not Geo-redundant storage (GRS).

 

Question 5

Which Azure capability enforces time-based retention or legal holds so protected data cannot be modified or deleted?

1. Immutable Blob Storage
2. Geo-zone-redundant storage (GZRS)
3. Object replication
4. Zone-redundant storage (ZRS)

Correct Answer: A

 

Correct Answer

Answer A is correct because Immutable Blob Storage matches the described capability and is intended to meet write-once-read-many retention and compliance requirements.

Incorrect Answers

Answer B is incorrect because Geo-zone-redundant storage (GZRS) is intended to protect against both primary-region zone failure and regional disaster, which is a different architectural function.

Answer C is incorrect because Object replication is intended to maintain application-controlled object copies across accounts or regions, which is a different architectural function.

Answer D is incorrect because Zone-redundant storage (ZRS) is intended to protect storage against a zone failure while keeping data in one region, which is a different architectural function.

 

Question 6

To recover accidentally deleted object data during the retention window, which Azure design option should be selected?

1. Locally redundant storage (LRS)
2. Blob soft delete
3. Geo-redundant storage (GRS)
4. Immutable Blob Storage

Correct Answer: B

 

Correct Answer

Answer B is correct because Blob soft delete is designed to recover accidentally deleted object data during the retention window. Blob soft delete retains deleted blobs or versions for a configured retention period.

Incorrect Answers

Answer A is incorrect because Locally redundant storage (LRS) can be useful in Azure architectures, but its primary role is to provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required; it is not the best match for the stated priority.

Answer C is incorrect because Geo-redundant storage (GRS) can be useful in Azure architectures, but its primary role is to provide regional durability beyond the primary region; it is not the best match for the stated priority.

Answer D is incorrect because Immutable Blob Storage can be useful in Azure architectures, but its primary role is to meet write-once-read-many retention and compliance requirements; it is not the best match for the stated priority.

 

Question 7

Which Azure capability keeps multiple synchronous copies of data within a single physical location in the primary region?

1. Zone-redundant storage (ZRS)
2. Geo-zone-redundant storage (GZRS)
3. Locally redundant storage (LRS)
4. Blob lifecycle management

Correct Answer: C

 

Correct Answer

Answer C is correct because Locally redundant storage (LRS) matches the described capability and is intended to provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required.

Incorrect Answers

Answer A is incorrect because Zone-redundant storage (ZRS) is intended to protect storage against a zone failure while keeping data in one region, which is a different architectural function.

Answer B is incorrect because Geo-zone-redundant storage (GZRS) is intended to protect against both primary-region zone failure and regional disaster, which is a different architectural function.

Answer D is incorrect because Blob lifecycle management is intended to automatically optimize object storage cost over the data lifecycle, which is a different architectural function.

 

Question 8

When considering Read-access geo-redundant storage (RA-GRS or RA-GZRS), which requirement supports that choice?

1. To automatically optimize object storage cost over the data lifecycle.
2. To maintain application-controlled object copies across accounts or regions.
3. To allow applications to read replicated data from the secondary region before failover.
4. To recover accidentally deleted object data during the retention window.

Correct Answer: C

 

Correct Answer

Answer C is correct because Read-access geo-redundant storage (RA-GRS or RA-GZRS) adds read access to the secondary region for supported geo-redundant accounts.

Incorrect Answers

Answer A is incorrect because that outcome is more directly associated with Blob lifecycle management, not Read-access geo-redundant storage (RA-GRS or RA-GZRS).

Answer B is incorrect because that outcome is more directly associated with Object replication, not Read-access geo-redundant storage (RA-GRS or RA-GZRS).

Answer D is incorrect because that outcome is more directly associated with Blob soft delete, not Read-access geo-redundant storage (RA-GRS or RA-GZRS).

 

Question 9

When considering Blob lifecycle management, which requirement supports that choice?

1. To automatically optimize object storage cost over the data lifecycle.
2. To meet write-once-read-many retention and compliance requirements.
3. To recover earlier object versions after accidental overwrite or deletion.
4. To provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required.

Correct Answer: A

 

Correct Answer

Answer A is correct because Blob lifecycle management uses rules to transition blobs to lower-cost tiers or delete them based on age and conditions.

Incorrect Answers

Answer B is incorrect because that outcome is more directly associated with Immutable Blob Storage, not Blob lifecycle management.

Answer C is incorrect because that outcome is more directly associated with Blob versioning, not Blob lifecycle management.

Answer D is incorrect because that outcome is more directly associated with Locally redundant storage (LRS), not Blob lifecycle management.

 

Question 10

An organization wants to provide regional durability beyond the primary region. Which design choice most directly meets the requirement?

1. Blob soft delete
2. Blob lifecycle management
3. Geo-redundant storage (GRS)
4. Geo-zone-redundant storage (GZRS)

Correct Answer: C

 

Correct Answer

Answer C is correct because Geo-redundant storage (GRS) replicates primary-region LRS data asynchronously to a paired secondary region. It directly meets the requirement to provide regional durability beyond the primary region.

Incorrect Answers

Answer A is incorrect because Blob soft delete is used to recover accidentally deleted object data during the retention window; that does not directly satisfy the requirement in this scenario.

Answer B is incorrect because Blob lifecycle management is used to automatically optimize object storage cost over the data lifecycle; that does not directly satisfy the requirement in this scenario.

Answer D is incorrect because Geo-zone-redundant storage (GZRS) is used to protect against both primary-region zone failure and regional disaster; that does not directly satisfy the requirement in this scenario.

 

Question 11

To allow applications to read replicated data from the secondary region before failover, which Azure design option should be selected?

1. Read-access geo-redundant storage (RA-GRS or RA-GZRS)
2. Blob soft delete
3. Object replication
4. Blob lifecycle management

Correct Answer: A

 

Correct Answer

Answer A is correct because Read-access geo-redundant storage (RA-GRS or RA-GZRS) is designed to allow applications to read replicated data from the secondary region before failover. Read-access geo-redundant storage (RA-GRS or RA-GZRS) adds read access to the secondary region for supported geo-redundant accounts.

Incorrect Answers

Answer B is incorrect because Blob soft delete can be useful in Azure architectures, but its primary role is to recover accidentally deleted object data during the retention window; it is not the best match for the stated priority.

Answer C is incorrect because Object replication can be useful in Azure architectures, but its primary role is to maintain application-controlled object copies across accounts or regions; it is not the best match for the stated priority.

Answer D is incorrect because Blob lifecycle management can be useful in Azure architectures, but its primary role is to automatically optimize object storage cost over the data lifecycle; it is not the best match for the stated priority.

 

Question 12

For Object replication, which statement is accurate?

1. Adds read access to the secondary region for supported geo-redundant accounts.
2. Keeps multiple synchronous copies of data within a single physical location in the primary region.
3. Replicates primary-region LRS data asynchronously to a paired secondary region.
4. Asynchronously copies block blobs between supported storage accounts according to replication policies.

Correct Answer: D

 

Correct Answer

Answer D is correct because Object replication asynchronously copies block blobs between supported storage accounts according to replication policies.

Incorrect Answers

Answer A is incorrect because that description belongs to Read-access geo-redundant storage (RA-GRS or RA-GZRS), whose purpose is to allow applications to read replicated data from the secondary region before failover.

Answer B is incorrect because that description belongs to Locally redundant storage (LRS), whose purpose is to provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required.

Answer C is incorrect because that description belongs to Geo-redundant storage (GRS), whose purpose is to provide regional durability beyond the primary region.

 

Question 13

For Geo-redundant storage (GRS), which statement is accurate?

1. Uses rules to transition blobs to lower-cost tiers or delete them based on age and conditions.
2. Retains deleted blobs or versions for a configured retention period.
3. Combines ZRS in the primary region with asynchronous replication to a secondary region.
4. Replicates primary-region LRS data asynchronously to a paired secondary region.

Correct Answer: D

 

Correct Answer

Answer D is correct because Geo-redundant storage (GRS) replicates primary-region LRS data asynchronously to a paired secondary region.

Incorrect Answers

Answer A is incorrect because that description belongs to Blob lifecycle management, whose purpose is to automatically optimize object storage cost over the data lifecycle.

Answer B is incorrect because that description belongs to Blob soft delete, whose purpose is to recover accidentally deleted object data during the retention window.

Answer C is incorrect because that description belongs to Geo-zone-redundant storage (GZRS), whose purpose is to protect against both primary-region zone failure and regional disaster.

 

Question 14

When considering Blob versioning, which requirement supports that choice?

1. To maintain application-controlled object copies across accounts or regions.
2. To protect storage against a zone failure while keeping data in one region.
3. To recover accidentally deleted object data during the retention window.
4. To recover earlier object versions after accidental overwrite or deletion.

Correct Answer: D

 

Correct Answer

Answer D is correct because Blob versioning keeps previous versions when supported blobs are modified or deleted.

Incorrect Answers

Answer A is incorrect because that outcome is more directly associated with Object replication, not Blob versioning.

Answer B is incorrect because that outcome is more directly associated with Zone-redundant storage (ZRS), not Blob versioning.

Answer C is incorrect because that outcome is more directly associated with Blob soft delete, not Blob versioning.

 

Question 15

For Locally redundant storage (LRS), which statement is accurate?

1. Keeps multiple synchronous copies of data within a single physical location in the primary region.
2. Uses rules to transition blobs to lower-cost tiers or delete them based on age and conditions.
3. Synchronously replicates data across Availability Zones in the primary region.
4. Combines ZRS in the primary region with asynchronous replication to a secondary region.

Correct Answer: A

 

Correct Answer

Answer A is correct because Locally redundant storage (LRS) keeps multiple synchronous copies of data within a single physical location in the primary region.

Incorrect Answers

Answer B is incorrect because that description belongs to Blob lifecycle management, whose purpose is to automatically optimize object storage cost over the data lifecycle.

Answer C is incorrect because that description belongs to Zone-redundant storage (ZRS), whose purpose is to protect storage against a zone failure while keeping data in one region.

Answer D is incorrect because that description belongs to Geo-zone-redundant storage (GZRS), whose purpose is to protect against both primary-region zone failure and regional disaster.

 

Question 16

To protect against both primary-region zone failure and regional disaster, which Azure design option should be selected?

1. Read-access geo-redundant storage (RA-GRS or RA-GZRS)
2. Geo-zone-redundant storage (GZRS)
3. Immutable Blob Storage
4. Blob versioning

Correct Answer: B

 

Correct Answer

Answer B is correct because Geo-zone-redundant storage (GZRS) is designed to protect against both primary-region zone failure and regional disaster. Geo-zone-redundant storage (GZRS) combines ZRS in the primary region with asynchronous replication to a secondary region.

Incorrect Answers

Answer A is incorrect because Read-access geo-redundant storage (RA-GRS or RA-GZRS) can be useful in Azure architectures, but its primary role is to allow applications to read replicated data from the secondary region before failover; it is not the best match for the stated priority.

Answer C is incorrect because Immutable Blob Storage can be useful in Azure architectures, but its primary role is to meet write-once-read-many retention and compliance requirements; it is not the best match for the stated priority.

Answer D is incorrect because Blob versioning can be useful in Azure architectures, but its primary role is to recover earlier object versions after accidental overwrite or deletion; it is not the best match for the stated priority.

 

Question 17

When considering Immutable Blob Storage, which requirement supports that choice?

1. To meet write-once-read-many retention and compliance requirements.
2. To protect against both primary-region zone failure and regional disaster.
3. To maintain application-controlled object copies across accounts or regions.
4. To protect storage against a zone failure while keeping data in one region.

Correct Answer: A

 

Correct Answer

Answer A is correct because Immutable Blob Storage enforces time-based retention or legal holds so protected data cannot be modified or deleted.

Incorrect Answers

Answer B is incorrect because that outcome is more directly associated with Geo-zone-redundant storage (GZRS), not Immutable Blob Storage.

Answer C is incorrect because that outcome is more directly associated with Object replication, not Immutable Blob Storage.

Answer D is incorrect because that outcome is more directly associated with Zone-redundant storage (ZRS), not Immutable Blob Storage.

 

Question 18

When considering Locally redundant storage (LRS), which requirement supports that choice?

1. To protect against both primary-region zone failure and regional disaster.
2. To provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required.
3. To automatically optimize object storage cost over the data lifecycle.
4. To protect storage against a zone failure while keeping data in one region.

Correct Answer: B

 

Correct Answer

Answer B is correct because Locally redundant storage (LRS) keeps multiple synchronous copies of data within a single physical location in the primary region.

Incorrect Answers

Answer A is incorrect because that outcome is more directly associated with Geo-zone-redundant storage (GZRS), not Locally redundant storage (LRS).

Answer C is incorrect because that outcome is more directly associated with Blob lifecycle management, not Locally redundant storage (LRS).

Answer D is incorrect because that outcome is more directly associated with Zone-redundant storage (ZRS), not Locally redundant storage (LRS).

 

Question 19

When considering Object replication, which requirement supports that choice?

1. To maintain application-controlled object copies across accounts or regions.
2. To provide regional durability beyond the primary region.
3. To allow applications to read replicated data from the secondary region before failover.
4. To provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required.

Correct Answer: A

 

Correct Answer

Answer A is correct because Object replication asynchronously copies block blobs between supported storage accounts according to replication policies.

Incorrect Answers

Answer B is incorrect because that outcome is more directly associated with Geo-redundant storage (GRS), not Object replication.

Answer C is incorrect because that outcome is more directly associated with Read-access geo-redundant storage (RA-GRS or RA-GZRS), not Object replication.

Answer D is incorrect because that outcome is more directly associated with Locally redundant storage (LRS), not Object replication.

 

Question 20

For Blob versioning, which statement is accurate?

1. Synchronously replicates data across Availability Zones in the primary region.
2. Retains deleted blobs or versions for a configured retention period.
3. Keeps previous versions when supported blobs are modified or deleted.
4. Asynchronously copies block blobs between supported storage accounts according to replication policies.

Correct Answer: C

 

Correct Answer

Answer C is correct because Blob versioning keeps previous versions when supported blobs are modified or deleted.

Incorrect Answers

Answer A is incorrect because that description belongs to Zone-redundant storage (ZRS), whose purpose is to protect storage against a zone failure while keeping data in one region.

Answer B is incorrect because that description belongs to Blob soft delete, whose purpose is to recover accidentally deleted object data during the retention window.

Answer D is incorrect because that description belongs to Object replication, whose purpose is to maintain application-controlled object copies across accounts or regions.

 

Question 21

To protect storage against a zone failure while keeping data in one region, which Azure design option should be selected?

1. Read-access geo-redundant storage (RA-GRS or RA-GZRS)
2. Zone-redundant storage (ZRS)
3. Blob versioning
4. Geo-redundant storage (GRS)

Correct Answer: B

 

Correct Answer

Answer B is correct because Zone-redundant storage (ZRS) synchronously replicates data across Availability Zones in the primary region. It directly meets the requirement to protect storage against a zone failure while keeping data in one region.

Incorrect Answers

Answer A is incorrect because Read-access geo-redundant storage (RA-GRS or RA-GZRS) is used to allow applications to read replicated data from the secondary region before failover; that does not directly satisfy the requirement in this scenario.

Answer C is incorrect because Blob versioning is used to recover earlier object versions after accidental overwrite or deletion; that does not directly satisfy the requirement in this scenario.

Answer D is incorrect because Geo-redundant storage (GRS) is used to provide regional durability beyond the primary region; that does not directly satisfy the requirement in this scenario.

 

Question 22

A solution architect needs to allow applications to read replicated data from the secondary region before failover. Which Azure service or capability is the best fit?

1. Blob lifecycle management
2. Read-access geo-redundant storage (RA-GRS or RA-GZRS)
3. Blob soft delete
4. Object replication

Correct Answer: B

 

Correct Answer

Answer B is correct because Read-access geo-redundant storage (RA-GRS or RA-GZRS) adds read access to the secondary region for supported geo-redundant accounts. It directly meets the requirement to allow applications to read replicated data from the secondary region before failover.

Incorrect Answers

Answer A is incorrect because Blob lifecycle management is used to automatically optimize object storage cost over the data lifecycle; that does not directly satisfy the requirement in this scenario.

Answer C is incorrect because Blob soft delete is used to recover accidentally deleted object data during the retention window; that does not directly satisfy the requirement in this scenario.

Answer D is incorrect because Object replication is used to maintain application-controlled object copies across accounts or regions; that does not directly satisfy the requirement in this scenario.

 

Question 23

A storage design must automatically move older blobs to cheaper tiers and eventually delete expired objects. Which description correctly explains Blob lifecycle management?

1. Enforces time-based retention or legal holds so protected data cannot be modified or deleted.
2. Keeps previous versions when supported blobs are modified or deleted.
3. Keeps multiple synchronous copies of data within a single physical location in the primary region.
4. Uses rules to transition blobs to lower-cost tiers or delete them based on age and conditions.

Correct Answer: D

 

Correct Answer

Answer D is correct because Blob lifecycle management uses rules to transition blobs to lower-cost tiers or delete them based on age and conditions.

Incorrect Answers

Answer A is incorrect because that description belongs to Immutable Blob Storage, whose purpose is to meet write-once-read-many retention and compliance requirements.

Answer B is incorrect because that description belongs to Blob versioning, whose purpose is to recover earlier object versions after accidental overwrite or deletion.

Answer C is incorrect because that description belongs to Locally redundant storage (LRS), whose purpose is to provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required.

 

Question 24

Which Azure capability uses rules to transition blobs to lower-cost tiers or delete them based on age and conditions?

1. Blob versioning
2. Immutable Blob Storage
3. Locally redundant storage (LRS)
4. Blob lifecycle management

Correct Answer: D

 

Correct Answer

Answer D is correct because Blob lifecycle management matches the described capability and is intended to automatically optimize object storage cost over the data lifecycle.

Incorrect Answers

Answer A is incorrect because Blob versioning is intended to recover earlier object versions after accidental overwrite or deletion, which is a different architectural function.

Answer B is incorrect because Immutable Blob Storage is intended to meet write-once-read-many retention and compliance requirements, which is a different architectural function.

Answer C is incorrect because Locally redundant storage (LRS) is intended to provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required, which is a different architectural function.

 

Question 25

Which Azure capability retains deleted blobs or versions for a configured retention period?

1. Geo-redundant storage (GRS)
2. Locally redundant storage (LRS)
3. Blob soft delete
4. Immutable Blob Storage

Correct Answer: C

 

Correct Answer

Answer C is correct because Blob soft delete matches the described capability and is intended to recover accidentally deleted object data during the retention window.

Incorrect Answers

Answer A is incorrect because Geo-redundant storage (GRS) is intended to provide regional durability beyond the primary region, which is a different architectural function.

Answer B is incorrect because Locally redundant storage (LRS) is intended to provide the lowest-cost Azure Storage redundancy when zone or regional failure protection is not required, which is a different architectural function.

Answer D is incorrect because Immutable Blob Storage is intended to meet write-once-read-many retention and compliance requirements, which is a different architectural function.