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Question 140
A streaming media team sees performance fall as audience demand grows. The team observes: Response time rises despite idle capacity on some instances. What is the most likely cause of the observed failure?
- All replicas were concentrated in the same availability zone.
- Regional placement and routing were chosen without geographic latency evidence.
- Scaling rules or distribution did not follow workload demand.
- The architecture increased capacity without adding independent failure protection.
Explanation
Correct Answer
C:Scaling rules or distribution did not follow workload demand. That explains the symptom: Response time rises despite idle capacity on some instances. The targeted corrective action is: Configure suitable autoscale conditions and a supported baseline capacity.
Incorrect Answers
A:This cause is consistent with a different issue: A zonal failure removes every application instance. It does not account for the reported symptom here: Response time rises despite idle capacity on some instances.
B:The alternate mechanism would more directly produce this other failure: Remote users have poor response time despite healthy servers. The current incident instead involves: Response time rises despite idle capacity on some instances.
D:This cause is consistent with a different issue: A larger VM still causes an outage when its only host fails. It does not account for the reported symptom here: Response time rises despite idle capacity on some instances.
Question 141
A municipal app must recover quickly after a regional disruption. Which architectural decision meets the described priority?
- Use centralized management and monitoring capabilities rather than manual per-VM logins.
- Use a disaster-recovery design with defined recovery time and recovery point targets.
- Establish governance controls in addition to securing individual workloads.
- Interpret service-specific SLA terms and architecture prerequisites.
Explanation
Correct Answer
B:Use a disaster-recovery design with defined recovery time and recovery point targets. The governing requirement is: A municipal app must recover quickly after a regional disruption. This solution specifically supports the outcome that a recovery exercise meets agreed RTO and RPO measures.
Incorrect Answers
A:This design is appropriate for a different requirement: An IT service provider wants rapid visibility into resource health and resource inventory. Here the decisive outcome must instead be: A recovery exercise meets agreed RTO and RPO measures.
C:This option solves a different planning problem: A bank is concerned cloud services can be provisioned outside approved policy. The current acceptance criterion is specific: A recovery exercise meets agreed RTO and RPO measures.
D:This design is appropriate for a different requirement: An engineering firm wants to know which outages are covered by Azure SLAs. Here the decisive outcome must instead be: A recovery exercise meets agreed RTO and RPO measures.
Question 142
A municipal app must recover quickly after a regional disruption. Which configuration or operating action most directly puts that decision into practice?
- Configure supported geo-replication and restore/runbook procedures as appropriate.
- Measure latency by user geography before selecting supported deployment regions.
- Grant appropriate resource deployment permissions and enforce quotas.
- Apply appropriate Azure Policy assignments at the required scope.
Explanation
Correct Answer
A:Configure supported geo-replication and restore/runbook procedures as appropriate. The implementation operationalizes this design choice: Use a disaster-recovery design with defined recovery time and recovery point targets. Acceptance should demonstrate: A recovery exercise meets agreed RTO and RPO measures.
Incorrect Answers
B:That action implements a different requirement: A product team needs lower latency for customers spread across distant regions. It does not establish the required result in this case: A recovery exercise meets agreed RTO and RPO measures.
C:This change would be appropriate under a different condition: A startup wants application capacity changes tracked without lengthy hardware purchasing. Here it would not validate: A recovery exercise meets agreed RTO and RPO measures.
D:This setup is relevant to another workload: A bank is concerned cloud services can be provisioned outside approved policy. The current configuration must instead achieve: A recovery exercise meets agreed RTO and RPO measures.
Question 143
A municipal app must recover quickly after a regional disruption. Which observation is the strongest acceptance test for this scenario?
- A simulated eligible device fault does not lose the stored object.
- Observed monthly latency stays within the agreed range under comparable load.
- A recovery exercise meets agreed RTO and RPO measures.
- Authorized users can provision approved resources without ordering physical servers.
Explanation
Correct Answer
C:A recovery exercise meets agreed RTO and RPO measures. That directly tests the stated requirement: A municipal app must recover quickly after a regional disruption. It contrasts with the observed failure: Data is replicated but recovery cannot complete within the promised time.
Incorrect Answers
A:This observation is evidence for a separate scenario: A charity worries data may disappear when a single storage device fails. It does not test the necessary outcome here: A recovery exercise meets agreed RTO and RPO measures.
B:That check tests another control: A payroll team wants predictable monthly performance rather than only occasional availability. The decisive result for this workload is: A recovery exercise meets agreed RTO and RPO measures.
D:This observation is evidence for a separate scenario: A startup wants application capacity changes tracked without lengthy hardware purchasing. It does not test the necessary outcome here: A recovery exercise meets agreed RTO and RPO measures.
Question 144
A municipal app must recover quickly after a regional disruption. The team observes: Data is replicated but recovery cannot complete within the promised time. Which planning or configuration error best accounts for this result?
- The design relied on replication without a tested recovery procedure.
- Permissions were overbroad and audit visibility was not configured.
- The team generalized an SLA without checking the service and deployment terms.
- The process kept an on-premises hardware procurement model.
Explanation
Correct Answer
A:The design relied on replication without a tested recovery procedure. That explains the symptom: Data is replicated but recovery cannot complete within the promised time. The targeted corrective action is: Configure supported geo-replication and restore/runbook procedures as appropriate.
Incorrect Answers
B:The alternate mechanism would more directly produce this other failure: Unknown users can modify production resources without a trace. The current incident instead involves: Data is replicated but recovery cannot complete within the promised time.
C:That explanation belongs to a different fault pattern: A claimed uptime guarantee applies a different service's SLA. It does not explain why data is replicated but recovery cannot complete within the promised time.
D:This cause is consistent with a different issue: Every instance request still requires buying and racking new equipment. It does not account for the reported symptom here: Data is replicated but recovery cannot complete within the promised time.
Question 145
A payroll team wants predictable monthly performance rather than only occasional availability. Which Azure or cloud concept most directly matches the requirement?
- Distinguish resilience to component failure from capacity growth under load.
- Balance elasticity policies with cost monitoring instead of permanently overprovisioning.
- Define performance predictability using measured latency and capacity baselines.
- Use resilient rolling-deployment design across multiple eligible instances.
Explanation
Correct Answer
C:Define performance predictability using measured latency and capacity baselines. The governing requirement is: A payroll team wants predictable monthly performance rather than only occasional availability. This solution specifically supports the outcome that observed monthly latency stays within the agreed range under comparable load.
Incorrect Answers
A:This design is appropriate for a different requirement: An app owner assumes reliability and scalability are interchangeable attributes. Here the decisive outcome must instead be: Observed monthly latency stays within the agreed range under comparable load.
B:That concept addresses this separate situation: A retail store needs its web service to tolerate unexpected demand while controlling spend. It does not by itself establish the result required here: Observed monthly latency stays within the agreed range under comparable load.
D:This design is appropriate for a different requirement: A tourism service wants software patches installed without unscheduled customer outages. Here the decisive outcome must instead be: Observed monthly latency stays within the agreed range under comparable load.
Question 146
A payroll team wants predictable monthly performance rather than only occasional availability. Which implementation step would best fulfill the stated requirement?
- Deploy eligible instances across supported availability zones and test failover.
- Monitor representative workloads under repeatable demand levels.
- Choose the approved redundancy option for the relevant Azure storage account.
- Assign scoped roles and retain audit activity records for privileged operations.
Explanation
Correct Answer
B:Monitor representative workloads under repeatable demand levels. The implementation operationalizes this design choice: Define performance predictability using measured latency and capacity baselines. Acceptance should demonstrate: Observed monthly latency stays within the agreed range under comparable load.
Incorrect Answers
A:This setup is relevant to another workload: A manufacturing portal needs to withstand an availability-zone outage. The current configuration must instead achieve: Observed monthly latency stays within the agreed range under comparable load.
C:This change would be appropriate under a different condition: A charity worries data may disappear when a single storage device fails. Here it would not validate: Observed monthly latency stays within the agreed range under comparable load.
D:This setup is relevant to another workload: A regulated service needs auditable access across operations teams. The current configuration must instead achieve: Observed monthly latency stays within the agreed range under comparable load.
Question 147
A payroll team wants predictable monthly performance rather than only occasional availability. Which result would best demonstrate successful implementation?
- Equivalent test environments have consistent declared resource settings.
- The app scales up during peaks and contracts without unbounded resource cost.
- An instance fault triggers availability behavior without waiting for a backup restore.
- Observed monthly latency stays within the agreed range under comparable load.
Explanation
Correct Answer
D:Observed monthly latency stays within the agreed range under comparable load. That directly tests the stated requirement: A payroll team wants predictable monthly performance rather than only occasional availability. It contrasts with the observed failure: The app remains online but transaction times fluctuate wildly.
Incorrect Answers
A:This observation is evidence for a separate scenario: A nonprofit wants a repeatable way to deploy infrastructure in multiple test environments. It does not test the necessary outcome here: Observed monthly latency stays within the agreed range under comparable load.
B:That check tests another control: A retail store needs its web service to tolerate unexpected demand while controlling spend. The decisive result for this workload is: Observed monthly latency stays within the agreed range under comparable load.
C:The test is relevant when a school plans a cloud database and assumes backup copies alone deliver high availability. It cannot establish the specified acceptance result: Observed monthly latency stays within the agreed range under comparable load.
Question 148
A payroll team wants predictable monthly performance rather than only occasional availability. The team observes: The app remains online but transaction times fluctuate wildly. What should the team identify as the primary mechanism behind the problem?
- Availability was measured without performance predictability criteria.
- Scaling rules or distribution did not follow workload demand.
- All traffic depended on an unreplicated application node.
- Only scalability was tested, not fault tolerance.
Explanation
Correct Answer
A:Availability was measured without performance predictability criteria. That explains the symptom: The app remains online but transaction times fluctuate wildly. The targeted corrective action is: Monitor representative workloads under repeatable demand levels.
Incorrect Answers
B:The alternate mechanism would more directly produce this other failure: Response time rises despite idle capacity on some instances. The current incident instead involves: The app remains online but transaction times fluctuate wildly.
C:That explanation belongs to a different fault pattern: Taking one instance offline halts the whole customer service. It does not explain why the app remains online but transaction times fluctuate wildly.
D:This cause is consistent with a different issue: A system passes load tests but fails on a single-zone outage. It does not account for the reported symptom here: The app remains online but transaction times fluctuate wildly.
Question 149
A school plans a cloud database and assumes backup copies alone deliver high availability. Which design choice best fits the stated business constraint?
- Use centralized management and monitoring capabilities rather than manual per-VM logins.
- Distinguish running-service availability from recovery of historical backup copies.
- Recognize self-service provisioning as a cloud manageability benefit.
- Use a disaster-recovery design with defined recovery time and recovery point targets.
Explanation
Correct Answer
B:Distinguish running-service availability from recovery of historical backup copies. The governing requirement is: A school plans a cloud database and assumes backup copies alone deliver high availability. This solution specifically supports the outcome that an instance fault triggers availability behavior without waiting for a backup restore.
Incorrect Answers
A:This design is appropriate for a different requirement: An IT service provider wants rapid visibility into resource health and resource inventory. Here the decisive outcome must instead be: An instance fault triggers availability behavior without waiting for a backup restore.
C:This option solves a different planning problem: A startup wants application capacity changes tracked without lengthy hardware purchasing. The current acceptance criterion is specific: An instance fault triggers availability behavior without waiting for a backup restore.
D:This design is appropriate for a different requirement: A municipal app must recover quickly after a regional disruption. Here the decisive outcome must instead be: An instance fault triggers availability behavior without waiting for a backup restore.
Question 150
A school plans a cloud database and assumes backup copies alone deliver high availability. Which Azure setup action best follows from this scenario?
- Deploy eligible instances across supported availability zones and test failover.
- Tune autoscale upper and lower bounds and watch charges against a budget.
- Provision test stacks from a reviewed deployment template rather than ad hoc clicks.
- Combine appropriate service redundancy with separately tested backup recovery.
Explanation
Correct Answer
D:Combine appropriate service redundancy with separately tested backup recovery. The implementation operationalizes this design choice: Distinguish running-service availability from recovery of historical backup copies. Acceptance should demonstrate: An instance fault triggers availability behavior without waiting for a backup restore.
Incorrect Answers
A:This setup is relevant to another workload: A manufacturing portal needs to withstand an availability-zone outage. The current configuration must instead achieve: An instance fault triggers availability behavior without waiting for a backup restore.
B:That action implements a different requirement: A retail store needs its web service to tolerate unexpected demand while controlling spend. It does not establish the required result in this case: An instance fault triggers availability behavior without waiting for a backup restore.
C:This change would be appropriate under a different condition: A nonprofit wants a repeatable way to deploy infrastructure in multiple test environments. Here it would not validate: An instance fault triggers availability behavior without waiting for a backup restore.
Microsoft Azure Fundamentals (AZ-900) Practice Tests