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Question 130
A ticketing platform wants uptime after a single VM host fails. Which implementation step would best fulfill the stated requirement?
- Configure suitable autoscale conditions and a supported baseline capacity.
- Define separate load and fault tests in the release acceptance plan.
- Deploy eligible instances across supported availability zones and test failover.
- Distribute eligible application instances across independent failure boundaries.
Explanation
Correct Answer
D:Distribute eligible application instances across independent failure boundaries. The implementation operationalizes this design choice: Design redundancy or availability measures rather than simply increasing CPU capacity. Acceptance should demonstrate: A controlled host failure leaves the ticketing service available.
Incorrect Answers
A:This setup is relevant to another workload: A streaming media team sees performance fall as audience demand grows. The current configuration must instead achieve: A controlled host failure leaves the ticketing service available.
B:That action implements a different requirement: An app owner assumes reliability and scalability are interchangeable attributes. It does not establish the required result in this case: A controlled host failure leaves the ticketing service available.
C:This change would be appropriate under a different condition: A manufacturing portal needs to withstand an availability-zone outage. Here it would not validate: A controlled host failure leaves the ticketing service available.
Question 131
A ticketing platform wants uptime after a single VM host fails. Which result would best demonstrate successful implementation?
- Observed monthly latency stays within the agreed range under comparable load.
- A controlled host failure leaves the ticketing service available.
- Disallowed settings are detected or blocked according to policy effects.
- Transient faults are handled without endless retries or total service failure.
Explanation
Correct Answer
B:A controlled host failure leaves the ticketing service available. That directly tests the stated requirement: A ticketing platform wants uptime after a single VM host fails. It contrasts with the observed failure: A larger VM still causes an outage when its only host fails.
Incorrect Answers
A:This observation is evidence for a separate scenario: A payroll team wants predictable monthly performance rather than only occasional availability. It does not test the necessary outcome here: A controlled host failure leaves the ticketing service available.
C:The test is relevant when a bank is concerned cloud services can be provisioned outside approved policy. It cannot establish the specified acceptance result: A controlled host failure leaves the ticketing service available.
D:This observation is evidence for a separate scenario: A delivery company wants resilience when one dependency is down for a short period. It does not test the necessary outcome here: A controlled host failure leaves the ticketing service available.
Question 132
A ticketing platform wants uptime after a single VM host fails. The team observes: A larger VM still causes an outage when its only host fails. What should the team identify as the primary mechanism behind the problem?
- Regional placement and routing were chosen without geographic latency evidence.
- Backups were never tested for usable recovery.
- The architecture increased capacity without adding independent failure protection.
- Scaling rules or distribution did not follow workload demand.
Explanation
Correct Answer
C:The architecture increased capacity without adding independent failure protection. That explains the symptom: A larger VM still causes an outage when its only host fails. The targeted corrective action is: Distribute eligible application instances across independent failure boundaries.
Incorrect Answers
A:This cause is consistent with a different issue: Remote users have poor response time despite healthy servers. It does not account for the reported symptom here: A larger VM still causes an outage when its only host fails.
B:The alternate mechanism would more directly produce this other failure: A backup dashboard is green but no test restore succeeds. The current incident instead involves: A larger VM still causes an outage when its only host fails.
D:This cause is consistent with a different issue: Response time rises despite idle capacity on some instances. It does not account for the reported symptom here: A larger VM still causes an outage when its only host fails.
Question 133
A manufacturing portal needs to withstand an availability-zone outage. Which design choice best fits the stated business constraint?
- Recognize self-service provisioning as a cloud manageability benefit.
- Use centralized management and monitoring capabilities rather than manual per-VM logins.
- Choose zone-redundant deployment where the relevant Azure service and region support it.
- Design redundancy or availability measures rather than simply increasing CPU capacity.
Explanation
Correct Answer
C:Choose zone-redundant deployment where the relevant Azure service and region support it. The governing requirement is: A manufacturing portal needs to withstand an availability-zone outage. This solution specifically supports the outcome that the app continues meeting its availability objective during a zone-loss exercise.
Incorrect Answers
A:This design is appropriate for a different requirement: A startup wants application capacity changes tracked without lengthy hardware purchasing. Here the decisive outcome must instead be: The app continues meeting its availability objective during a zone-loss exercise.
B:That concept addresses this separate situation: An IT service provider wants rapid visibility into resource health and resource inventory. It does not by itself establish the result required here: The app continues meeting its availability objective during a zone-loss exercise.
D:This design is appropriate for a different requirement: A ticketing platform wants uptime after a single VM host fails. Here the decisive outcome must instead be: The app continues meeting its availability objective during a zone-loss exercise.
Question 134
A manufacturing portal needs to withstand an availability-zone outage. Which Azure setup action best follows from this scenario?
- Deploy eligible instances across supported availability zones and test failover.
- Configure suitable autoscale conditions and a supported baseline capacity.
- Configure health checks and bounded retry behavior for appropriate dependencies.
- Configure supported backups and periodically restore a representative dataset.
Explanation
Correct Answer
A:Deploy eligible instances across supported availability zones and test failover. The implementation operationalizes this design choice: Choose zone-redundant deployment where the relevant Azure service and region support it. Acceptance should demonstrate: The app continues meeting its availability objective during a zone-loss exercise.
Incorrect Answers
B:That action implements a different requirement: A streaming media team sees performance fall as audience demand grows. It does not establish the required result in this case: The app continues meeting its availability objective during a zone-loss exercise.
C:This change would be appropriate under a different condition: A delivery company wants resilience when one dependency is down for a short period. Here it would not validate: The app continues meeting its availability objective during a zone-loss exercise.
D:This setup is relevant to another workload: A company wants fast restoration of accidentally deleted cloud data. The current configuration must instead achieve: The app continues meeting its availability objective during a zone-loss exercise.
Question 135
A manufacturing portal needs to withstand an availability-zone outage. Which verification outcome should the team expect from the right design?
- The app continues meeting its availability objective during a zone-loss exercise.
- The app scales up during peaks and contracts without unbounded resource cost.
- Change records show consistent resources and rollback plans.
- A controlled host failure leaves the ticketing service available.
Explanation
Correct Answer
A:The app continues meeting its availability objective during a zone-loss exercise. That directly tests the stated requirement: A manufacturing portal needs to withstand an availability-zone outage. It contrasts with the observed failure: A zonal failure removes every application instance.
Incorrect Answers
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: The app continues meeting its availability objective during a zone-loss exercise.
C:The test is relevant when a finance firm wants to reduce operator mistakes during routine updates. It cannot establish the specified acceptance result: The app continues meeting its availability objective during a zone-loss exercise.
D:This observation is evidence for a separate scenario: A ticketing platform wants uptime after a single VM host fails. It does not test the necessary outcome here: The app continues meeting its availability objective during a zone-loss exercise.
Question 136
A manufacturing portal needs to withstand an availability-zone outage. The team observes: A zonal failure removes every application instance. Which underlying mistake most directly explains the reported symptom?
- Availability was measured without performance predictability criteria.
- The architecture had recovery copies but no high-availability design.
- All replicas were concentrated in the same availability zone.
- The data was stored without an appropriate redundancy configuration.
Explanation
Correct Answer
C:All replicas were concentrated in the same availability zone. That explains the symptom: A zonal failure removes every application instance. The targeted corrective action is: Deploy eligible instances across supported availability zones and test failover.
Incorrect Answers
A:This cause is consistent with a different issue: The app remains online but transaction times fluctuate wildly. It does not account for the reported symptom here: A zonal failure removes every application instance.
B:The alternate mechanism would more directly produce this other failure: Every failure requires hours of manual database restoration. The current incident instead involves: A zonal failure removes every application instance.
D:This cause is consistent with a different issue: A single copy fails when its hardware disappears. It does not account for the reported symptom here: A zonal failure removes every application instance.
Question 137
A streaming media team sees performance fall as audience demand grows. What is the most appropriate cloud concept or service for this need?
- Distinguish running-service availability from recovery of historical backup copies.
- Balance elasticity policies with cost monitoring instead of permanently overprovisioning.
- Plan scalable capacity to handle traffic growth while preserving service targets.
- Consider geographic placement and service routing for performance predictability.
Explanation
Correct Answer
C:Plan scalable capacity to handle traffic growth while preserving service targets. The governing requirement is: A streaming media team sees performance fall as audience demand grows. This solution specifically supports the outcome that latency remains within target during a controlled traffic ramp.
Incorrect Answers
A:This design is appropriate for a different requirement: A school plans a cloud database and assumes backup copies alone deliver high availability. Here the decisive outcome must instead be: Latency remains within target during a controlled traffic ramp.
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: Latency remains within target during a controlled traffic ramp.
D:This design is appropriate for a different requirement: A product team needs lower latency for customers spread across distant regions. Here the decisive outcome must instead be: Latency remains within target during a controlled traffic ramp.
Question 138
A streaming media team sees performance fall as audience demand grows. What should the team configure or perform to implement the correct approach?
- Monitor representative workloads under repeatable demand levels.
- Apply appropriate Azure Policy assignments at the required scope.
- Configure supported geo-replication and restore/runbook procedures as appropriate.
- Configure suitable autoscale conditions and a supported baseline capacity.
Explanation
Correct Answer
D:Configure suitable autoscale conditions and a supported baseline capacity. The implementation operationalizes this design choice: Plan scalable capacity to handle traffic growth while preserving service targets. Acceptance should demonstrate: Latency remains within target during a controlled traffic ramp.
Incorrect Answers
A:This setup is relevant to another workload: A payroll team wants predictable monthly performance rather than only occasional availability. The current configuration must instead achieve: Latency remains within target during a controlled traffic ramp.
B:That action implements a different requirement: A bank is concerned cloud services can be provisioned outside approved policy. It does not establish the required result in this case: Latency remains within target during a controlled traffic ramp.
C:This change would be appropriate under a different condition: A municipal app must recover quickly after a regional disruption. Here it would not validate: Latency remains within target during a controlled traffic ramp.
Question 139
A streaming media team sees performance fall as audience demand grows. Which evidence best confirms the requirement is being met?
- Latency remains within target during a controlled traffic ramp.
- Disallowed settings are detected or blocked according to policy effects.
- Observed monthly latency stays within the agreed range under comparable load.
- Change records show consistent resources and rollback plans.
Explanation
Correct Answer
A:Latency remains within target during a controlled traffic ramp. That directly tests the stated requirement: A streaming media team sees performance fall as audience demand grows. It contrasts with the observed failure: Response time rises despite idle capacity on some instances.
Incorrect Answers
B:That check tests another control: A bank is concerned cloud services can be provisioned outside approved policy. The decisive result for this workload is: Latency remains within target during a controlled traffic ramp.
C:The test is relevant when a payroll team wants predictable monthly performance rather than only occasional availability. It cannot establish the specified acceptance result: Latency remains within target during a controlled traffic ramp.
D:This observation is evidence for a separate scenario: A finance firm wants to reduce operator mistakes during routine updates. It does not test the necessary outcome here: Latency remains within target during a controlled traffic ramp.
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.
Microsoft Azure Fundamentals (AZ-900) Practice Tests