Question 690
The planned architecture is: Use Azure Spot Virtual Machines with interruption-tolerant queues and checkpointing when suitable. Workload context: A research rendering pipeline can tolerate interruption and restart individual tasks, with a strict low-cost compute budget. Which acceptance test demonstrates that the required behavior works?
- Migrate a pilot VM and validate vSphere management, network extension and application connectivity.
- Submit a representative batch and check task distribution, failures and output aggregation.
- Install the driver on a test VM and validate service startup and OS-level operations.
- Simulate task eviction and verify unfinished work retries or resumes without data corruption.
Explanation
Correct Answer
D:The acceptance test is specific: Simulate task eviction and verify unfinished work retries or resumes without data corruption. Its purpose is to establish that the proposed architecture works: Use Azure Spot Virtual Machines with interruption-tolerant queues and checkpointing when suitable.
Incorrect Answers
A:That observation pertains to a separate failure: The proposed migration requires redesigning all VMware operations that the owner must retain initially. Its cause is: A replacement IaaS platform was chosen despite strict VMware compatibility requirements. It does not confirm the result of this design. The direct proof would be: Simulate task eviction and verify unfinished work retries or resumes without data corruption.
B:The alternative test targets: Use Azure Batch with pools, job/task scheduling and autoscaling for parallel batch workloads. The scenario's actual proposed remedy is: Use Azure Spot Virtual Machines with interruption-tolerant queues and checkpointing when suitable. Verify that one by: Simulate task eviction and verify unfinished work retries or resumes without data corruption.
C:This check validates a different workload: Install the driver on a test VM and validate service startup and OS-level operations. Its associated design is: Select Azure Virtual Machines with appropriate VM size, networking and disk configuration rather than a restricted PaaS host. The required acceptance test here is: Simulate task eviction and verify unfinished work retries or resumes without data corruption.
Question 691
The customer states: A research rendering pipeline can tolerate interruption and restart individual tasks, with a strict low-cost compute budget. An incident reveals: Rendering jobs stop permanently when discounted spot capacity is reclaimed. What cause best accounts for this evidence?
- The workload lacks managed parallel task scheduling and scalable compute pools.
- A replacement IaaS platform was chosen despite strict VMware compatibility requirements.
- The chosen hosting abstraction does not expose the operating system features the app requires.
- The workload lacks eviction handling and assumes spot capacity is guaranteed.
Explanation
Correct Answer
D:This is the failure mechanism rather than an incidental symptom: The workload lacks eviction handling and assumes spot capacity is guaranteed. It accounts for: Rendering jobs stop permanently when discounted spot capacity is reclaimed. The architectural repair is: Use Azure Spot Virtual Machines with interruption-tolerant queues and checkpointing when suitable.
Incorrect Answers
A:The proposed diagnosis fits another scenario: The workload lacks managed parallel task scheduling and scalable compute pools. It would typically be reflected by: A single VM serializes thousands of independent jobs and misses the daily SLA. The current evidence instead supports: The workload lacks eviction handling and assumes spot capacity is guaranteed.
B:The alternative weakness is: A replacement IaaS platform was chosen despite strict VMware compatibility requirements. Its associated failure is: The proposed migration requires redesigning all VMware operations that the owner must retain initially. Neither explains the present observation: Rendering jobs stop permanently when discounted spot capacity is reclaimed. The direct cause here is: The workload lacks eviction handling and assumes spot capacity is guaranteed.
C:This cause would explain a different symptom: The app cannot install its required host driver on a managed web platform. The mechanism for that event is: The chosen hosting abstraction does not expose the operating system features the app requires. Here the stated symptom is: Rendering jobs stop permanently when discounted spot capacity is reclaimed. Its cause is: The workload lacks eviction handling and assumes spot capacity is guaranteed.
Question 692
Workload context: A research rendering pipeline can tolerate interruption and restart individual tasks, with a strict low-cost compute budget. The implemented remedy is: Use Azure Spot Virtual Machines with interruption-tolerant queues and checkpointing when suitable. Which ongoing practice most specifically prevents recurrence of this failure: Rendering jobs stop permanently when discounted spot capacity is reclaimed.?
- Review AVS node capacity, connectivity and license implications before each migration wave.
- Review VM image patching and guest configuration when changing OS versions.
- Monitor eviction signals and maintain fallback capacity for urgent deadlines.
- Review task retries and pool scaling quotas before peak runs.
Explanation
Correct Answer
C:The preventive control is: Monitor eviction signals and maintain fallback capacity for urgent deadlines. It targets the earlier cause: The workload lacks eviction handling and assumes spot capacity is guaranteed. Confirm ongoing effectiveness by: Simulate task eviction and verify unfinished work retries or resumes without data corruption.
Incorrect Answers
A:This is a reasonable safeguard for a different fault: The proposed migration requires redesigning all VMware operations that the owner must retain initially. That different mechanism is: A replacement IaaS platform was chosen despite strict VMware compatibility requirements. The original incident here instead arises from: The workload lacks eviction handling and assumes spot capacity is guaranteed. The directly relevant safeguard is: Monitor eviction signals and maintain fallback capacity for urgent deadlines.
B:The proposed control focuses on: The chosen hosting abstraction does not expose the operating system features the app requires. For the design in the question, recurrence comes from: The workload lacks eviction handling and assumes spot capacity is guaranteed. A precise prevention step is: Monitor eviction signals and maintain fallback capacity for urgent deadlines.
D:This is a reasonable safeguard for a different fault: A single VM serializes thousands of independent jobs and misses the daily SLA. That different mechanism is: The workload lacks managed parallel task scheduling and scalable compute pools. The original incident here instead arises from: The workload lacks eviction handling and assumes spot capacity is guaranteed. The directly relevant safeguard is: Monitor eviction signals and maintain fallback capacity for urgent deadlines.
Question 693
A solution architect is reviewing a workload: A company has predictable year-round VM consumption and wants cost commitment without changing the compute technology. The observed incident is: Annual compute spending remains on pay-as-you-go rates despite a stable baseline. Which architecture choice most directly removes the identified weakness?
- Evaluate Azure confidential VMs or supported confidential compute backed by hardware-based trusted execution appropriate to workload.
- Select eligible GPU VM sizes or supported GPU-backed managed compute with compatible drivers and allocation quotas.
- Evaluate Azure Dedicated Host with eligible VM families and documented licensing eligibility.
- Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs.
Explanation
Correct Answer
D:The targeted implementation is: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs. The problem is not generic resource availability: No committed-use discount decision was evaluated for predictable demand. Verify the result by: Compare effective costs and coverage reports for baseline VMs against on-demand usage.
Incorrect Answers
A:The option belongs to a different failure mechanism: Ordinary VM encryption at rest alone does not provide the required in-use protection. That situation exhibits: Highly sensitive data are processed without the required isolation boundary for memory in use. For the stated case, the remedy is: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs.
B:That design instead addresses another observed condition: Inference falls below performance target on CPU-only VMs. Its technical cause is: Compute selection does not meet model accelerator requirements. The current workload exhibits: Annual compute spending remains on pay-as-you-go rates despite a stable baseline. Its targeted remedy is: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs.
C:This choice mitigates an alternative scenario, where: A shared VM host does not satisfy the vendor's dedicated-host licensing constraint. The underlying issue there is: The architecture does not provide the required customer-controlled physical-host tenancy. Here the root issue is: No committed-use discount decision was evaluated for predictable demand. Choose the corresponding action: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs.
Question 694
An architect proposes this change: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs. The workload context is: A company has predictable year-round VM consumption and wants cost commitment without changing the compute technology. Which evidence would most directly validate the change?
- Benchmark inference throughput and verify GPU device use and memory under load.
- Compare effective costs and coverage reports for baseline VMs against on-demand usage.
- Verify eligible confidential-computing capability and attestation expectations in a test workload.
- Inspect assigned VM physical host placement and verify the licensed workload runs on the dedicated host.
Explanation
Correct Answer
B:This observation directly verifies the intended design: Compare effective costs and coverage reports for baseline VMs against on-demand usage. The architecture being tested is: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs. The original symptom was: Annual compute spending remains on pay-as-you-go rates despite a stable baseline.
Incorrect Answers
A:The alternative test targets: Select eligible GPU VM sizes or supported GPU-backed managed compute with compatible drivers and allocation quotas. The scenario's actual proposed remedy is: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs. Verify that one by: Compare effective costs and coverage reports for baseline VMs against on-demand usage.
C:That observation pertains to a separate failure: Highly sensitive data are processed without the required isolation boundary for memory in use. Its cause is: Ordinary VM encryption at rest alone does not provide the required in-use protection. It does not confirm the result of this design. The direct proof would be: Compare effective costs and coverage reports for baseline VMs against on-demand usage.
D:The alternative test targets: Evaluate Azure Dedicated Host with eligible VM families and documented licensing eligibility. The scenario's actual proposed remedy is: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs. Verify that one by: Compare effective costs and coverage reports for baseline VMs against on-demand usage.
Question 695
During architecture troubleshooting, a team reports: Annual compute spending remains on pay-as-you-go rates despite a stable baseline. Context: A company has predictable year-round VM consumption and wants cost commitment without changing the compute technology. Which underlying design mistake explains the observed behavior most precisely?
- No committed-use discount decision was evaluated for predictable demand.
- Compute selection does not meet model accelerator requirements.
- Ordinary VM encryption at rest alone does not provide the required in-use protection.
- The architecture does not provide the required customer-controlled physical-host tenancy.
Explanation
Correct Answer
A:The recorded behavior follows from: No committed-use discount decision was evaluated for predictable demand. The appropriate mitigation would be: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs. Verify with: Compare effective costs and coverage reports for baseline VMs against on-demand usage.
Incorrect Answers
B:This cause would explain a different symptom: Inference falls below performance target on CPU-only VMs. The mechanism for that event is: Compute selection does not meet model accelerator requirements. Here the stated symptom is: Annual compute spending remains on pay-as-you-go rates despite a stable baseline. Its cause is: No committed-use discount decision was evaluated for predictable demand.
C:The proposed diagnosis fits another scenario: Ordinary VM encryption at rest alone does not provide the required in-use protection. It would typically be reflected by: Highly sensitive data are processed without the required isolation boundary for memory in use. The current evidence instead supports: No committed-use discount decision was evaluated for predictable demand.
D:The alternative weakness is: The architecture does not provide the required customer-controlled physical-host tenancy. Its associated failure is: A shared VM host does not satisfy the vendor's dedicated-host licensing constraint. Neither explains the present observation: Annual compute spending remains on pay-as-you-go rates despite a stable baseline. The direct cause here is: No committed-use discount decision was evaluated for predictable demand.
Question 696
The design change is: Evaluate eligible Azure Reservations or savings plans based on actual steady usage and flexibility needs. The original failure was: Annual compute spending remains on pay-as-you-go rates despite a stable baseline. Which ongoing control best prevents recurrence of the same root cause?
- Revisit reservation scope, utilization and savings-plan coverage every quarter.
- Track confidential compute SKU support and attestation policy after platform upgrades.
- Reassess host capacity, failure recovery and license inventory during renewal.
- Audit GPU driver compatibility and regional SKU quota during scaling.
Explanation
Correct Answer
A:The key follow-up control is: Revisit reservation scope, utilization and savings-plan coverage every quarter. It avoids recurrence of the scenario in which: Annual compute spending remains on pay-as-you-go rates despite a stable baseline. It addresses: No committed-use discount decision was evaluated for predictable demand.
Incorrect Answers
B:That safeguard manages another risk: Ordinary VM encryption at rest alone does not provide the required in-use protection. Its scenario is: Highly sensitive data are processed without the required isolation boundary for memory in use. The present recurring risk is: No committed-use discount decision was evaluated for predictable demand. The proper ongoing control is: Revisit reservation scope, utilization and savings-plan coverage every quarter.
C:This is a reasonable safeguard for a different fault: A shared VM host does not satisfy the vendor's dedicated-host licensing constraint. That different mechanism is: The architecture does not provide the required customer-controlled physical-host tenancy. The original incident here instead arises from: No committed-use discount decision was evaluated for predictable demand. The directly relevant safeguard is: Revisit reservation scope, utilization and savings-plan coverage every quarter.
D:The proposed control focuses on: Compute selection does not meet model accelerator requirements. For the design in the question, recurrence comes from: No committed-use discount decision was evaluated for predictable demand. A precise prevention step is: Revisit reservation scope, utilization and savings-plan coverage every quarter.
Question 697
A design workshop has this requirement: A transient batch worker writes temporary scratch data that can be lost on VM redeployment; durable business records live in managed storage. Operators currently observe: The application loses business files after a VM host maintenance event. Select the ONE design remedy that best addresses the root cause.
- Use Azure Functions with an appropriate trigger and hosting plan that meets latency and network constraints.
- Evaluate Azure Dedicated Host with eligible VM families and documented licensing eligibility.
- Select Azure Virtual Machines with appropriate VM size, networking and disk configuration rather than a restricted PaaS host.
- Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services.
Explanation
Correct Answer
D:This option addresses the actual design defect: Critical state was stored on nonpersistent temporary local storage. The correction is: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services. Confirm the outcome with: Redeploy the worker and confirm business results remain while disposable scratch may disappear.
Incorrect Answers
A:That design instead addresses another observed condition: An always-on VM is maintained solely to poll object storage for new files. Its technical cause is: The compute model does not use event-driven managed function triggers. The current workload exhibits: The application loses business files after a VM host maintenance event. Its targeted remedy is: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services.
B:This choice mitigates an alternative scenario, where: A shared VM host does not satisfy the vendor's dedicated-host licensing constraint. The underlying issue there is: The architecture does not provide the required customer-controlled physical-host tenancy. Here the root issue is: Critical state was stored on nonpersistent temporary local storage. Choose the corresponding action: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services.
C:The option belongs to a different failure mechanism: The chosen hosting abstraction does not expose the operating system features the app requires. That situation exhibits: The app cannot install its required host driver on a managed web platform. For the stated case, the remedy is: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services.
Question 698
The planned architecture is: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services. Workload context: A transient batch worker writes temporary scratch data that can be lost on VM redeployment; durable business records live in managed storage. Which acceptance test demonstrates that the required behavior works?
- Upload a test blob and verify one idempotent execution records the expected result.
- Inspect assigned VM physical host placement and verify the licensed workload runs on the dedicated host.
- Redeploy the worker and confirm business results remain while disposable scratch may disappear.
- Install the driver on a test VM and validate service startup and OS-level operations.
Explanation
Correct Answer
C:The decisive evidence is: Redeploy the worker and confirm business results remain while disposable scratch may disappear. This measures the mechanism of the planned change, not an unrelated Azure service: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services.
Incorrect Answers
A:This check validates a different workload: Upload a test blob and verify one idempotent execution records the expected result. Its associated design is: Use Azure Functions with an appropriate trigger and hosting plan that meets latency and network constraints. The required acceptance test here is: Redeploy the worker and confirm business results remain while disposable scratch may disappear.
B:That observation pertains to a separate failure: A shared VM host does not satisfy the vendor's dedicated-host licensing constraint. Its cause is: The architecture does not provide the required customer-controlled physical-host tenancy. It does not confirm the result of this design. The direct proof would be: Redeploy the worker and confirm business results remain while disposable scratch may disappear.
D:This check validates a different workload: Install the driver on a test VM and validate service startup and OS-level operations. Its associated design is: Select Azure Virtual Machines with appropriate VM size, networking and disk configuration rather than a restricted PaaS host. The required acceptance test here is: Redeploy the worker and confirm business results remain while disposable scratch may disappear.
Question 699
The customer states: A transient batch worker writes temporary scratch data that can be lost on VM redeployment; durable business records live in managed storage. An incident reveals: The application loses business files after a VM host maintenance event. What cause best accounts for this evidence?
- Critical state was stored on nonpersistent temporary local storage.
- The architecture does not provide the required customer-controlled physical-host tenancy.
- The compute model does not use event-driven managed function triggers.
- The chosen hosting abstraction does not expose the operating system features the app requires.
Explanation
Correct Answer
A:The incident is explained by: Critical state was stored on nonpersistent temporary local storage. The reported symptom is: The application loses business files after a VM host maintenance event. The corresponding design fix is: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services.
Incorrect Answers
B:The proposed diagnosis fits another scenario: The architecture does not provide the required customer-controlled physical-host tenancy. It would typically be reflected by: A shared VM host does not satisfy the vendor's dedicated-host licensing constraint. The current evidence instead supports: Critical state was stored on nonpersistent temporary local storage.
C:The alternative weakness is: The compute model does not use event-driven managed function triggers. Its associated failure is: An always-on VM is maintained solely to poll object storage for new files. Neither explains the present observation: The application loses business files after a VM host maintenance event. The direct cause here is: Critical state was stored on nonpersistent temporary local storage.
D:This cause would explain a different symptom: The app cannot install its required host driver on a managed web platform. The mechanism for that event is: The chosen hosting abstraction does not expose the operating system features the app requires. Here the stated symptom is: The application loses business files after a VM host maintenance event. Its cause is: Critical state was stored on nonpersistent temporary local storage.
Question 700
Workload context: A transient batch worker writes temporary scratch data that can be lost on VM redeployment; durable business records live in managed storage. The implemented remedy is: Use an appropriate VM temporary/local scratch disk only for disposable files and store durable results on managed disks or services. Which ongoing practice most specifically prevents recurrence of this failure: The application loses business files after a VM host maintenance event.?
- Review VM image patching and guest configuration when changing OS versions.
- Review function retry, idempotency and scaling when event volume changes.
- Audit scratch versus persistent paths in application configuration before image changes.
- Reassess host capacity, failure recovery and license inventory during renewal.
Explanation
Correct Answer
C:The key follow-up control is: Audit scratch versus persistent paths in application configuration before image changes. It avoids recurrence of the scenario in which: The application loses business files after a VM host maintenance event. It addresses: Critical state was stored on nonpersistent temporary local storage.
Incorrect Answers
A:That safeguard manages another risk: The chosen hosting abstraction does not expose the operating system features the app requires. Its scenario is: The app cannot install its required host driver on a managed web platform. The present recurring risk is: Critical state was stored on nonpersistent temporary local storage. The proper ongoing control is: Audit scratch versus persistent paths in application configuration before image changes.
B:This is a reasonable safeguard for a different fault: An always-on VM is maintained solely to poll object storage for new files. That different mechanism is: The compute model does not use event-driven managed function triggers. The original incident here instead arises from: Critical state was stored on nonpersistent temporary local storage. The directly relevant safeguard is: Audit scratch versus persistent paths in application configuration before image changes.
D:That safeguard manages another risk: The architecture does not provide the required customer-controlled physical-host tenancy. Its scenario is: A shared VM host does not satisfy the vendor's dedicated-host licensing constraint. The present recurring risk is: Critical state was stored on nonpersistent temporary local storage. The proper ongoing control is: Audit scratch versus persistent paths in application configuration before image changes.
Designing Microsoft Azure Infrastructure Solutions (AZ-305) Practice Tests