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Question 520
A VM's operating-system disk must persist across restarts and be managed as block storage. The team observes: Guest data disappears because the wrong temporary storage was used. Which underlying mistake most directly explains the reported symptom?
- It misunderstood GRS secondary read-access behavior.
- The chosen tier assumed infrequent access against actual hot usage.
- The persistent VM disk requirement was not mapped to managed block storage.
- The account uses non-read-access geo-redundancy.
Explanation
Correct Answer
C:The persistent VM disk requirement was not mapped to managed block storage. That explains the symptom: Guest data disappears because the wrong temporary storage was used. The targeted corrective action is: Attach a compatible managed disk to the Azure VM.
Incorrect Answers
A:This cause is consistent with a different issue: The project expects access to secondary storage before failover without RA-GRS. It does not account for the reported symptom here: Guest data disappears because the wrong temporary storage was used.
B:The alternate mechanism would more directly produce this other failure: Images incur repeated rehydration delays from a deep archive tier. The current incident instead involves: Guest data disappears because the wrong temporary storage was used.
D:This cause is consistent with a different issue: Secondary read requests fail until failover. It does not account for the reported symptom here: Guest data disappears because the wrong temporary storage was used.
Question 521
An inventory system stores simple key-value records with flexible schemas and low-cost NoSQL access. What is the most appropriate cloud concept or service for this need?
- Match file-protocol mounts to Azure Files and object HTTP access to Blob Storage.
- Evaluate Azure Table Storage for an appropriate simple NoSQL key-attribute workload.
- Select an appropriate cooler Blob access tier according to retrieval expectations.
- Use AzCopy for command-line data transfers at scale.
Explanation
Correct Answer
B:Evaluate Azure Table Storage for an appropriate simple NoSQL key-attribute workload. The governing requirement is: An inventory system stores simple key-value records with flexible schemas and low-cost NoSQL access. This solution specifically supports the outcome that records can be retrieved using their expected entity keys.
Incorrect Answers
A:This design is appropriate for a different requirement: A storage team wants to describe the difference between Azure Files and Blob Storage. Here the decisive outcome must instead be: Records can be retrieved using their expected entity keys.
C:This option solves a different planning problem: A website rarely accesses old log archives but needs low storage cost. The current acceptance criterion is specific: Records can be retrieved using their expected entity keys.
D:This design is appropriate for a different requirement: A script must copy a large set of blobs between authorized storage accounts. Here the decisive outcome must instead be: Records can be retrieved using their expected entity keys.
Question 522
An inventory system stores simple key-value records with flexible schemas and low-cost NoSQL access. What should the team configure or perform to implement the correct approach?
- Record the required client access method before selecting a service.
- Set LRS redundancy on the supported storage account.
- Create a storage account and suitable blob container with scoped access.
- Create a supported table and use partition/row keys for entities.
Explanation
Correct Answer
D:Create a supported table and use partition/row keys for entities. The implementation operationalizes this design choice: Evaluate Azure Table Storage for an appropriate simple NoSQL key-attribute workload. Acceptance should demonstrate: Records can be retrieved using their expected entity keys.
Incorrect Answers
A:This setup is relevant to another workload: A storage team wants to describe the difference between Azure Files and Blob Storage. The current configuration must instead achieve: Records can be retrieved using their expected entity keys.
B:That action implements a different requirement: A storage account must keep data available after some local hardware fails. It does not establish the required result in this case: Records can be retrieved using their expected entity keys.
C:This change would be appropriate under a different condition: A photo app stores large unstructured images that must be accessed over HTTPS. Here it would not validate: Records can be retrieved using their expected entity keys.
Question 523
An inventory system stores simple key-value records with flexible schemas and low-cost NoSQL access. Which evidence best confirms the requirement is being met?
- The VM boots and retains disk changes after a normal restart.
- The inventory and readiness report identify migration risks.
- Records can be retrieved using their expected entity keys.
- Image requests complete at the expected access latency and charge pattern.
Explanation
Correct Answer
C:Records can be retrieved using their expected entity keys. That directly tests the stated requirement: An inventory system stores simple key-value records with flexible schemas and low-cost NoSQL access. It contrasts with the observed failure: The team expects SQL joins from a simple table entity store.
Incorrect Answers
A:This observation is evidence for a separate scenario: A VM's operating-system disk must persist across restarts and be managed as block storage. It does not test the necessary outcome here: Records can be retrieved using their expected entity keys.
B:That check tests another control: A company wants discovery and assessment before moving existing on-premises servers. The decisive result for this workload is: Records can be retrieved using their expected entity keys.
D:This observation is evidence for a separate scenario: An e-commerce catalog contains frequently viewed images that need low-latency retrieval. It does not test the necessary outcome here: Records can be retrieved using their expected entity keys.
Question 524
An inventory system stores simple key-value records with flexible schemas and low-cost NoSQL access. The team observes: The team expects SQL joins from a simple table entity store. What is the most likely cause of the observed failure?
- It selected a NoSQL table model without matching query needs.
- The access tier was chosen without considering read patterns.
- The redundancy SKU was below the stated fault-tolerance scope.
- Archive-tier offline retrieval behavior was ignored.
Explanation
Correct Answer
A:It selected a NoSQL table model without matching query needs. That explains the symptom: The team expects SQL joins from a simple table entity store. The targeted corrective action is: Create a supported table and use partition/row keys for entities.
Incorrect Answers
B:The alternate mechanism would more directly produce this other failure: Archive access costs exceed forecasts because retrieval frequency was ignored. The current incident instead involves: The team expects SQL joins from a simple table entity store.
C:That explanation belongs to a different fault pattern: The deployment uses only LRS but claims zone and regional protection. It does not explain why the team expects SQL joins from a simple table entity store.
D:This cause is consistent with a different issue: Staff expect archived blobs to return immediately as hot objects. It does not account for the reported symptom here: The team expects SQL joins from a simple table entity store.
Question 525
A website rarely accesses old log archives but needs low storage cost. Which architectural decision meets the described priority?
- Use Hot tier for frequently accessed blob objects when the costs fit.
- Select an appropriate cooler Blob access tier according to retrieval expectations.
- Select RA-GRS when secondary-region read access is required and supported.
- Match file-protocol mounts to Azure Files and object HTTP access to Blob Storage.
Explanation
Correct Answer
B:Select an appropriate cooler Blob access tier according to retrieval expectations. The governing requirement is: A website rarely accesses old log archives but needs low storage cost. This solution specifically supports the outcome that monthly storage expense falls while access charges match modeled retrievals.
Incorrect Answers
A:This design is appropriate for a different requirement: An e-commerce catalog contains frequently viewed images that need low-latency retrieval. Here the decisive outcome must instead be: Monthly storage expense falls while access charges match modeled retrievals.
C:This option solves a different planning problem: An analyst must read from a storage account's geo-secondary before failover. The current acceptance criterion is specific: Monthly storage expense falls while access charges match modeled retrievals.
D:This design is appropriate for a different requirement: A storage team wants to describe the difference between Azure Files and Blob Storage. Here the decisive outcome must instead be: Monthly storage expense falls while access charges match modeled retrievals.
Question 526
A website rarely accesses old log archives but needs low storage cost. Which configuration or operating action most directly puts that decision into practice?
- Choose RA-GRS rather than GRS for the eligible account.
- Select the supported GRS redundancy option for the storage account.
- Configure hot access for the current image container or eligible objects.
- Apply the supported cool/cold tier policy to eligible blobs.
Explanation
Correct Answer
D:Apply the supported cool/cold tier policy to eligible blobs. The implementation operationalizes this design choice: Select an appropriate cooler Blob access tier according to retrieval expectations. Acceptance should demonstrate: Monthly storage expense falls while access charges match modeled retrievals.
Incorrect Answers
A:This setup is relevant to another workload: An analyst must read from a storage account's geo-secondary before failover. The current configuration must instead achieve: Monthly storage expense falls while access charges match modeled retrievals.
B:That action implements a different requirement: A business needs cross-region storage protection with an asynchronous secondary copy. It does not establish the required result in this case: Monthly storage expense falls while access charges match modeled retrievals.
C:This change would be appropriate under a different condition: An e-commerce catalog contains frequently viewed images that need low-latency retrieval. Here it would not validate: Monthly storage expense falls while access charges match modeled retrievals.
Question 527
A website rarely accesses old log archives but needs low storage cost. Which observation is the strongest acceptance test for this scenario?
- Monthly storage expense falls while access charges match modeled retrievals.
- Image requests complete at the expected access latency and charge pattern.
- The VM boots and retains disk changes after a normal restart.
- Data remains available after an eligible local replica/device failure.
Explanation
Correct Answer
A:Monthly storage expense falls while access charges match modeled retrievals. That directly tests the stated requirement: A website rarely accesses old log archives but needs low storage cost. It contrasts with the observed failure: Archive access costs exceed forecasts because retrieval frequency was ignored.
Incorrect Answers
B:That check tests another control: An e-commerce catalog contains frequently viewed images that need low-latency retrieval. The decisive result for this workload is: Monthly storage expense falls while access charges match modeled retrievals.
C:The test is relevant when a VM's operating-system disk must persist across restarts and be managed as block storage. It cannot establish the specified acceptance result: Monthly storage expense falls while access charges match modeled retrievals.
D:This observation is evidence for a separate scenario: A storage account must keep data available after some local hardware fails. It does not test the necessary outcome here: Monthly storage expense falls while access charges match modeled retrievals.
Question 528
A website rarely accesses old log archives but needs low storage cost. The team observes: Archive access costs exceed forecasts because retrieval frequency was ignored. Which planning or configuration error best accounts for this result?
- The access tier was chosen without considering read patterns.
- Object storage was mistaken for a file-share interface.
- The storage service type does not provide the required object interface.
- LRS was chosen where zonal redundancy was required.
Explanation
Correct Answer
A:The access tier was chosen without considering read patterns. That explains the symptom: Archive access costs exceed forecasts because retrieval frequency was ignored. The targeted corrective action is: Apply the supported cool/cold tier policy to eligible blobs.
Incorrect Answers
B:The alternate mechanism would more directly produce this other failure: Users are given only a blob container URL when they need an SMB mount. The current incident instead involves: Archive access costs exceed forecasts because retrieval frequency was ignored.
C:That explanation belongs to a different fault pattern: The application expects object URLs but the design provisioned only VM block disks. It does not explain why archive access costs exceed forecasts because retrieval frequency was ignored.
D:This cause is consistent with a different issue: All replicas remain tied to one zone despite zone-failure requirements. It does not account for the reported symptom here: Archive access costs exceed forecasts because retrieval frequency was ignored.
Question 529
A legal organization must preserve documents that are almost never read for years. Which Azure or cloud concept most directly matches the requirement?
- Consider Blob Archive tier where latency and rehydration constraints fit.
- Choose an eligible Azure Data Box offline transfer workflow.
- Use LRS when locally redundant storage matches the specified failure model.
- Use Azure Managed Disks for VM disk volumes.
Explanation
Correct Answer
A:Consider Blob Archive tier where latency and rehydration constraints fit. The governing requirement is: A legal organization must preserve documents that are almost never read for years. This solution specifically supports the outcome that archives cost less to store but require planned rehydration before use.
Incorrect Answers
B:That concept addresses this separate situation: A data center must transfer petabytes to Azure but its internet link is too slow. It does not by itself establish the result required here: Archives cost less to store but require planned rehydration before use.
C:This option solves a different planning problem: A storage account must keep data available after some local hardware fails. The current acceptance criterion is specific: Archives cost less to store but require planned rehydration before use.
D:This design is appropriate for a different requirement: A VM's operating-system disk must persist across restarts and be managed as block storage. Here the decisive outcome must instead be: Archives cost less to store but require planned rehydration before use.
Question 530
A legal organization must preserve documents that are almost never read for years. Which implementation step would best fulfill the stated requirement?
- Sign in with approved identity and upload files through Storage Explorer.
- Move eligible retained objects to Archive with documented retrieval procedure.
- Choose a supported geo-zone-redundant option for the account.
- Select ZRS for the eligible account and validate zone support.
Explanation
Correct Answer
B:Move eligible retained objects to Archive with documented retrieval procedure. The implementation operationalizes this design choice: Consider Blob Archive tier where latency and rehydration constraints fit. Acceptance should demonstrate: Archives cost less to store but require planned rehydration before use.
Incorrect Answers
A:This setup is relevant to another workload: An operator wants to browse blob containers and upload a few files interactively. The current configuration must instead achieve: Archives cost less to store but require planned rehydration before use.
C:This change would be appropriate under a different condition: A backup workload needs zone protection in its primary region plus geo-replication. Here it would not validate: Archives cost less to store but require planned rehydration before use.
D:This setup is relevant to another workload: A regional service wants storage replication across availability zones within the primary region. The current configuration must instead achieve: Archives cost less to store but require planned rehydration before use.
Microsoft Azure Fundamentals (AZ-900) Practice Tests