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Microsoft AZ-900 Practice Test 19

Question 180

A delivery company wants resilience when one dependency is down for a short period. The team observes: Requests fail permanently on the first brief network interruption. What should the team identify as the primary mechanism behind the problem?

  1. Only scalability was tested, not fault tolerance.
  2. The architecture had recovery copies but no high-availability design.
  3. The application lacks failure-handling behavior even though hosted in the cloud.
  4. All replicas were concentrated in the same availability zone.

Explanation

Correct Answer

C:

The application lacks failure-handling behavior even though hosted in the cloud. That explains the symptom: Requests fail permanently on the first brief network interruption. The targeted corrective action is: Configure health checks and bounded retry behavior for appropriate dependencies.

Incorrect Answers

A:

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: Requests fail permanently on the first brief network interruption.

B:

The alternate mechanism would more directly produce this other failure: Every failure requires hours of manual database restoration. The current incident instead involves: Requests fail permanently on the first brief network interruption.

D:

This cause is consistent with a different issue: A zonal failure removes every application instance. It does not account for the reported symptom here: Requests fail permanently on the first brief network interruption.

Question 181

A finance firm wants to reduce operator mistakes during routine updates. Which design choice best fits the stated business constraint?

  1. Recognize self-service provisioning as a cloud manageability benefit.
  2. Establish governance controls in addition to securing individual workloads.
  3. Distinguish running-service availability from recovery of historical backup copies.
  4. Use controlled automation and repeatable deployment procedures for manageability.

Explanation

Correct Answer

D:

Use controlled automation and repeatable deployment procedures for manageability. The governing requirement is: A finance firm wants to reduce operator mistakes during routine updates. This solution specifically supports the outcome that change records show consistent resources and rollback plans.

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: Change records show consistent resources and rollback plans.

B:

That concept addresses this separate situation: A bank is concerned cloud services can be provisioned outside approved policy. It does not by itself establish the result required here: Change records show consistent resources and rollback plans.

C:

This option solves a different planning problem: A school plans a cloud database and assumes backup copies alone deliver high availability. The current acceptance criterion is specific: Change records show consistent resources and rollback plans.

Question 182

A finance firm wants to reduce operator mistakes during routine updates. Which Azure setup action best follows from this scenario?

  1. Configure health checks and bounded retry behavior for appropriate dependencies.
  2. Configure supported geo-replication and restore/runbook procedures as appropriate.
  3. Deploy eligible instances across supported availability zones and test failover.
  4. Apply reviewed template-driven changes instead of unrelated portal edits.

Explanation

Correct Answer

D:

Apply reviewed template-driven changes instead of unrelated portal edits. The implementation operationalizes this design choice: Use controlled automation and repeatable deployment procedures for manageability. Acceptance should demonstrate: Change records show consistent resources and rollback plans.

Incorrect Answers

A:

This setup is relevant to another workload: A delivery company wants resilience when one dependency is down for a short period. The current configuration must instead achieve: Change records show consistent resources and rollback plans.

B:

That action implements a different requirement: A municipal app must recover quickly after a regional disruption. It does not establish the required result in this case: Change records show consistent resources and rollback plans.

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: Change records show consistent resources and rollback plans.

Question 183

A finance firm wants to reduce operator mistakes during routine updates. Which verification outcome should the team expect from the right design?

  1. Change records show consistent resources and rollback plans.
  2. Disallowed settings are detected or blocked according to policy effects.
  3. A recovery exercise meets agreed RTO and RPO measures.
  4. A simulated eligible device fault does not lose the stored object.

Explanation

Correct Answer

A:

Change records show consistent resources and rollback plans. That directly tests the stated requirement: A finance firm wants to reduce operator mistakes during routine updates. It contrasts with the observed failure: Small repeated deployments produce incompatible settings.

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: Change records show consistent resources and rollback plans.

C:

The test is relevant when a municipal app must recover quickly after a regional disruption. It cannot establish the specified acceptance result: Change records show consistent resources and rollback plans.

D:

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: Change records show consistent resources and rollback plans.

Question 184

A finance firm wants to reduce operator mistakes during routine updates. The team observes: Small repeated deployments produce incompatible settings. Which underlying mistake most directly explains the reported symptom?

  1. The design relied on replication without a tested recovery procedure.
  2. Only scalability was tested, not fault tolerance.
  3. Uncontrolled manual configuration drove environment drift.
  4. No centralized cloud management view or telemetry was configured.

Explanation

Correct Answer

C:

Uncontrolled manual configuration drove environment drift. That explains the symptom: Small repeated deployments produce incompatible settings. The targeted corrective action is: Apply reviewed template-driven changes instead of unrelated portal edits.

Incorrect Answers

A:

This cause is consistent with a different issue: Data is replicated but recovery cannot complete within the promised time. It does not account for the reported symptom here: Small repeated deployments produce incompatible settings.

B:

The alternate mechanism would more directly produce this other failure: A system passes load tests but fails on a single-zone outage. The current incident instead involves: Small repeated deployments produce incompatible settings.

D:

This cause is consistent with a different issue: Incidents are found only after connecting manually to each server. It does not account for the reported symptom here: Small repeated deployments produce incompatible settings.

Question 185

An app owner assumes reliability and scalability are interchangeable attributes. What is the most appropriate cloud concept or service for this need?

  1. Establish governance controls in addition to securing individual workloads.
  2. Distinguish resilience to component failure from capacity growth under load.
  3. Design resilient application patterns such as retries and alternate healthy instances.
  4. Choose zone-redundant deployment where the relevant Azure service and region support it.

Explanation

Correct Answer

B:

Distinguish resilience to component failure from capacity growth under load. The governing requirement is: An app owner assumes reliability and scalability are interchangeable attributes. This solution specifically supports the outcome that the service has independent evidence for load scaling and outage recovery.

Incorrect Answers

A:

This design is appropriate for a different requirement: A bank is concerned cloud services can be provisioned outside approved policy. Here the decisive outcome must instead be: The service has independent evidence for load scaling and outage recovery.

C:

This option solves a different planning problem: A delivery company wants resilience when one dependency is down for a short period. The current acceptance criterion is specific: The service has independent evidence for load scaling and outage recovery.

D:

This design is appropriate for a different requirement: A manufacturing portal needs to withstand an availability-zone outage. Here the decisive outcome must instead be: The service has independent evidence for load scaling and outage recovery.

Question 186

An app owner assumes reliability and scalability are interchangeable attributes. What should the team configure or perform to implement the correct approach?

  1. Assign scoped roles and retain audit activity records for privileged operations.
  2. Grant appropriate resource deployment permissions and enforce quotas.
  3. Define separate load and fault tests in the release acceptance plan.
  4. Configure supported geo-replication and restore/runbook procedures as appropriate.

Explanation

Correct Answer

C:

Define separate load and fault tests in the release acceptance plan. The implementation operationalizes this design choice: Distinguish resilience to component failure from capacity growth under load. Acceptance should demonstrate: The service has independent evidence for load scaling and outage recovery.

Incorrect Answers

A:

This setup is relevant to another workload: A regulated service needs auditable access across operations teams. The current configuration must instead achieve: The service has independent evidence for load scaling and outage recovery.

B:

That action implements a different requirement: A startup wants application capacity changes tracked without lengthy hardware purchasing. It does not establish the required result in this case: The service has independent evidence for load scaling and outage recovery.

D:

This setup is relevant to another workload: A municipal app must recover quickly after a regional disruption. The current configuration must instead achieve: The service has independent evidence for load scaling and outage recovery.

Question 187

An app owner assumes reliability and scalability are interchangeable attributes. Which evidence best confirms the requirement is being met?

  1. A deleted file can be restored to a verified recent recovery point.
  2. The app scales up during peaks and contracts without unbounded resource cost.
  3. Operators can inspect resource health across the intended scope.
  4. The service has independent evidence for load scaling and outage recovery.

Explanation

Correct Answer

D:

The service has independent evidence for load scaling and outage recovery. That directly tests the stated requirement: An app owner assumes reliability and scalability are interchangeable attributes. It contrasts with the observed failure: A system passes load tests but fails on a single-zone outage.

Incorrect Answers

A:

This observation is evidence for a separate scenario: A company wants fast restoration of accidentally deleted cloud data. It does not test the necessary outcome here: The service has independent evidence for load scaling and outage recovery.

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 service has independent evidence for load scaling and outage recovery.

C:

The test is relevant when an IT service provider wants rapid visibility into resource health and resource inventory. It cannot establish the specified acceptance result: The service has independent evidence for load scaling and outage recovery.

Question 188

An app owner assumes reliability and scalability are interchangeable attributes. The team observes: A system passes load tests but fails on a single-zone outage. What is the most likely cause of the observed failure?

  1. Availability was measured without performance predictability criteria.
  2. The application lacks failure-handling behavior even though hosted in the cloud.
  3. Manual provisioning was used instead of consistent declarative deployment.
  4. Only scalability was tested, not fault tolerance.

Explanation

Correct Answer

D:

Only scalability was tested, not fault tolerance. That explains the symptom: A system passes load tests but fails on a single-zone outage. The targeted corrective action is: Define separate load and fault tests in the release acceptance plan.

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 system passes load tests but fails on a single-zone outage.

B:

The alternate mechanism would more directly produce this other failure: Requests fail permanently on the first brief network interruption. The current incident instead involves: A system passes load tests but fails on a single-zone outage.

C:

That explanation belongs to a different fault pattern: Each new environment has a different network and compute baseline. It does not explain why a system passes load tests but fails on a single-zone outage.

Question 189

A tourism service wants software patches installed without unscheduled customer outages. Which architectural decision meets the described priority?

  1. Recognize self-service provisioning as a cloud manageability benefit.
  2. Choose zone-redundant deployment where the relevant Azure service and region support it.
  3. Use centralized management and monitoring capabilities rather than manual per-VM logins.
  4. Use resilient rolling-deployment design across multiple eligible instances.

Explanation

Correct Answer

D:

Use resilient rolling-deployment design across multiple eligible instances. The governing requirement is: A tourism service wants software patches installed without unscheduled customer outages. This solution specifically supports the outcome that user sessions stay within SLO while a subset of instances upgrades.

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: User sessions stay within SLO while a subset of instances upgrades.

B:

That concept addresses this separate situation: A manufacturing portal needs to withstand an availability-zone outage. It does not by itself establish the result required here: User sessions stay within SLO while a subset of instances upgrades.

C:

This option solves a different planning problem: An IT service provider wants rapid visibility into resource health and resource inventory. The current acceptance criterion is specific: User sessions stay within SLO while a subset of instances upgrades.

Question 190

A tourism service wants software patches installed without unscheduled customer outages. Which configuration or operating action most directly puts that decision into practice?

  1. Provision test stacks from a reviewed deployment template rather than ad hoc clicks.
  2. Define separate load and fault tests in the release acceptance plan.
  3. Tune autoscale upper and lower bounds and watch charges against a budget.
  4. Stage changes across instances behind appropriate routing and health checks.

Explanation

Correct Answer

D:

Stage changes across instances behind appropriate routing and health checks. The implementation operationalizes this design choice: Use resilient rolling-deployment design across multiple eligible instances. Acceptance should demonstrate: User sessions stay within SLO while a subset of instances upgrades.

Incorrect Answers

A:

This setup is relevant to another workload: A nonprofit wants a repeatable way to deploy infrastructure in multiple test environments. The current configuration must instead achieve: User sessions stay within SLO while a subset of instances upgrades.

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: User sessions stay within SLO while a subset of instances upgrades.

C:

This change would be appropriate under a different condition: A retail store needs its web service to tolerate unexpected demand while controlling spend. Here it would not validate: User sessions stay within SLO while a subset of instances upgrades.

Microsoft Azure Fundamentals (AZ-900) Practice Tests

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