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Microsoft AZ-900 Practice Test 13

Question 120

A tax software team compares a pay-per-use option with prepaid cloud capacity for uncertain demand. The team observes: Most committed compute goes unused when seasonal demand falls short. Which underlying mistake most directly explains the reported symptom?

  1. The team committed based on peak forecast rather than sustained utilization.
  2. The team confused provider infrastructure duties with customer configuration duties.
  3. The team confused capital purchasing with consumption-based cloud estimation.
  4. The workload was deployed on always-on infrastructure rather than event-triggered compute.

Explanation

Correct Answer

A:

The team committed based on peak forecast rather than sustained utilization. That explains the symptom: Most committed compute goes unused when seasonal demand falls short. The targeted corrective action is: Estimate high and low demand scenarios before buying eligible commitments.

Incorrect Answers

B:

The alternate mechanism would more directly produce this other failure: Administrators assume Microsoft will grant least-privilege access automatically. The current incident instead involves: Most committed compute goes unused when seasonal demand falls short.

C:

That explanation belongs to a different fault pattern: The forecast uses only a one-time hardware price and omits recurring usage. It does not explain why most committed compute goes unused when seasonal demand falls short.

D:

This cause is consistent with a different issue: A permanent VM runs idle while waiting for rare events. It does not account for the reported symptom here: Most committed compute goes unused when seasonal demand falls short.

Question 121

A factory wants network links and local devices to stay private but run a customer portal in Azure. What is the most appropriate cloud concept or service for this need?

  1. Prefer flexible consumption pricing when usage is highly uncertain and commitment waste is risky.
  2. Apply the shared-responsibility model based on the selected service type.
  3. Explain elasticity as capacity adjustment and availability as service continuity.
  4. Choose a hybrid deployment whose cloud portal does not expose factory-control systems.

Explanation

Correct Answer

D:

Choose a hybrid deployment whose cloud portal does not expose factory-control systems. The governing requirement is: A factory wants network links and local devices to stay private but run a customer portal in Azure. This solution specifically supports the outcome that portal clients reach the approved app without direct access to restricted factory devices.

Incorrect Answers

A:

This design is appropriate for a different requirement: A tax software team compares a pay-per-use option with prepaid cloud capacity for uncertain demand. Here the decisive outcome must instead be: Portal clients reach the approved app without direct access to restricted factory devices.

B:

That concept addresses this separate situation: A payments application needs clear division of security duties between Azure and its customer. It does not by itself establish the result required here: Portal clients reach the approved app without direct access to restricted factory devices.

C:

This option solves a different planning problem: A project lead is confused by the phrase 'cloud elasticity' versus 'high availability'. The current acceptance criterion is specific: Portal clients reach the approved app without direct access to restricted factory devices.

Question 122

A factory wants network links and local devices to stay private but run a customer portal in Azure. What should the team configure or perform to implement the correct approach?

  1. Configure an eligible scale set or autoscale rule to add worker instances.
  2. Separate private factory systems from public-facing portal access paths.
  3. Deploy the approved site resources in a provider-operated Azure region.
  4. Set scale-out and scale-in policies within documented resource limits.

Explanation

Correct Answer

B:

Separate private factory systems from public-facing portal access paths. The implementation operationalizes this design choice: Choose a hybrid deployment whose cloud portal does not expose factory-control systems. Acceptance should demonstrate: Portal clients reach the approved app without direct access to restricted factory devices.

Incorrect Answers

A:

This setup is relevant to another workload: A retailer wants to add many similar web workers when concurrent shopping sessions increase. The current configuration must instead achieve: Portal clients reach the approved app without direct access to restricted factory devices.

C:

This change would be appropriate under a different condition: A small publisher wants its website online without operating a physical data center. Here it would not validate: Portal clients reach the approved app without direct access to restricted factory devices.

D:

This setup is relevant to another workload: A city website experiences occasional traffic spikes but must scale back after each public event. The current configuration must instead achieve: Portal clients reach the approved app without direct access to restricted factory devices.

Question 123

A factory wants network links and local devices to stay private but run a customer portal in Azure. Which evidence best confirms the requirement is being met?

  1. The selection tolerates low usage without paying for large unused committed capacity.
  2. The recovery plan has a costed service design instead of assuming hardware ownership.
  3. Each workload placement matches its documented operational-control constraints.
  4. Portal clients reach the approved app without direct access to restricted factory devices.

Explanation

Correct Answer

D:

Portal clients reach the approved app without direct access to restricted factory devices. That directly tests the stated requirement: A factory wants network links and local devices to stay private but run a customer portal in Azure. It contrasts with the observed failure: Internet portal users gain routes into plant-control subnets.

Incorrect Answers

A:

This observation is evidence for a separate scenario: A tax software team compares a pay-per-use option with prepaid cloud capacity for uncertain demand. It does not test the necessary outcome here: Portal clients reach the approved app without direct access to restricted factory devices.

B:

That check tests another control: An enterprise wants to stop buying redundant backup-site hardware but still plan for outages. The decisive result for this workload is: Portal clients reach the approved app without direct access to restricted factory devices.

C:

The test is relevant when a bank is choosing between private, public, and hybrid infrastructure for workloads with different residency rules. It cannot establish the specified acceptance result: Portal clients reach the approved app without direct access to restricted factory devices.

Question 124

A factory wants network links and local devices to stay private but run a customer portal in Azure. The team observes: Internet portal users gain routes into plant-control subnets. What is the most likely cause of the observed failure?

  1. Geographic placement was confused with deployment model ownership.
  2. The hybrid boundary was designed without required network isolation.
  3. It applied IaaS hardware-maintenance assumptions to a SaaS application.
  4. It interpreted serverless literally instead of as a responsibility abstraction.

Explanation

Correct Answer

B:

The hybrid boundary was designed without required network isolation. That explains the symptom: Internet portal users gain routes into plant-control subnets. The targeted corrective action is: Separate private factory systems from public-facing portal access paths.

Incorrect Answers

A:

This cause is consistent with a different issue: A region selection is presented as proof of a private-cloud operating model. It does not account for the reported symptom here: Internet portal users gain routes into plant-control subnets.

C:

That explanation belongs to a different fault pattern: The team plans to patch physical mail-server components in a SaaS tenant. It does not explain why internet portal users gain routes into plant-control subnets.

D:

This cause is consistent with a different issue: The architecture review claims no infrastructure exists anywhere for a function. It does not account for the reported symptom here: Internet portal users gain routes into plant-control subnets.

Question 125

A project lead is confused by the phrase 'cloud elasticity' versus 'high availability'. Which architectural decision meets the described priority?

  1. Recognize cloud consumption as operating expenditure rather than an upfront server purchase.
  2. Select vertical scaling of an eligible VM size for one memory-bound process.
  3. Explain elasticity as capacity adjustment and availability as service continuity.
  4. Choose a private-cloud model when ownership and dedicated control are the overriding constraints.

Explanation

Correct Answer

C:

Explain elasticity as capacity adjustment and availability as service continuity. The governing requirement is: A project lead is confused by the phrase 'cloud elasticity' versus 'high availability'. This solution specifically supports the outcome that peak load tests and component-failure tests report different outcome measures.

Incorrect Answers

A:

This design is appropriate for a different requirement: A healthcare group compares capital equipment expense against monthly operating expense for new servers. Here the decisive outcome must instead be: Peak load tests and component-failure tests report different outcome measures.

B:

That concept addresses this separate situation: A scientific simulation requires more memory in a single process rather than a larger pool of workers. It does not by itself establish the result required here: Peak load tests and component-failure tests report different outcome measures.

D:

This design is appropriate for a different requirement: A government contractor cannot share facility infrastructure and must operate computing under its direct control. Here the decisive outcome must instead be: Peak load tests and component-failure tests report different outcome measures.

Question 126

A project lead is confused by the phrase 'cloud elasticity' versus 'high availability'. Which configuration or operating action most directly puts that decision into practice?

  1. Choose a service model separately for each application's current operational needs.
  2. Assign operating-system and middleware patch responsibilities per service category.
  3. Deallocate unused VMs and review the remaining storage and networking charges.
  4. Define distinct acceptance metrics for scaling events and outage resilience.

Explanation

Correct Answer

D:

Define distinct acceptance metrics for scaling events and outage resilience. The implementation operationalizes this design choice: Explain elasticity as capacity adjustment and availability as service continuity. Acceptance should demonstrate: Peak load tests and component-failure tests report different outcome measures.

Incorrect Answers

A:

This setup is relevant to another workload: An advertising firm wants to start with a VM today and later use managed services. The current configuration must instead achieve: Peak load tests and component-failure tests report different outcome measures.

B:

That action implements a different requirement: A call center needs to know whether changing its service model changes who updates its application runtime. It does not establish the required result in this case: Peak load tests and component-failure tests report different outcome measures.

C:

This change would be appropriate under a different condition: A charity wants to pay only for temporary virtual machines used during annual fundraising. Here it would not validate: Peak load tests and component-failure tests report different outcome measures.

Question 127

A project lead is confused by the phrase 'cloud elasticity' versus 'high availability'. Which observation is the strongest acceptance test for this scenario?

  1. Capacity tests stay within approved quota and supported region stock.
  2. Customer-managed identities and data permissions have assigned owners.
  3. The short-lived infrastructure cost follows actual consumed capacity.
  4. Peak load tests and component-failure tests report different outcome measures.

Explanation

Correct Answer

D:

Peak load tests and component-failure tests report different outcome measures. That directly tests the stated requirement: A project lead is confused by the phrase 'cloud elasticity' versus 'high availability'. It contrasts with the observed failure: Autoscaling passes while a single-point failure still takes the app offline.

Incorrect Answers

A:

This observation is evidence for a separate scenario: A retailer is told cloud platforms provide unlimited resources instantly. It does not test the necessary outcome here: Peak load tests and component-failure tests report different outcome measures.

B:

That check tests another control: A payments application needs clear division of security duties between Azure and its customer. The decisive result for this workload is: Peak load tests and component-failure tests report different outcome measures.

C:

The test is relevant when a tax preparer wants temporary infrastructure during filing season rather than owning idle servers all year. It cannot establish the specified acceptance result: Peak load tests and component-failure tests report different outcome measures.

Question 128

A project lead is confused by the phrase 'cloud elasticity' versus 'high availability'. The team observes: Autoscaling passes while a single-point failure still takes the app offline. Which planning or configuration error best accounts for this result?

  1. The team treated capacity scaling as equivalent to failure tolerance.
  2. Geographic placement was confused with deployment model ownership.
  3. The hybrid boundary was designed without required network isolation.
  4. It applied IaaS hardware-maintenance assumptions to a SaaS application.

Explanation

Correct Answer

A:

The team treated capacity scaling as equivalent to failure tolerance. That explains the symptom: Autoscaling passes while a single-point failure still takes the app offline. The targeted corrective action is: Define distinct acceptance metrics for scaling events and outage resilience.

Incorrect Answers

B:

The alternate mechanism would more directly produce this other failure: A region selection is presented as proof of a private-cloud operating model. The current incident instead involves: Autoscaling passes while a single-point failure still takes the app offline.

C:

That explanation belongs to a different fault pattern: Internet portal users gain routes into plant-control subnets. It does not explain why autoscaling passes while a single-point failure still takes the app offline.

D:

This cause is consistent with a different issue: The team plans to patch physical mail-server components in a SaaS tenant. It does not account for the reported symptom here: Autoscaling passes while a single-point failure still takes the app offline.

Question 129

A ticketing platform wants uptime after a single VM host fails. Which Azure or cloud concept most directly matches the requirement?

  1. Define performance predictability using measured latency and capacity baselines.
  2. Include tested backup and recovery in the reliability strategy.
  3. Design resilient application patterns such as retries and alternate healthy instances.
  4. Design redundancy or availability measures rather than simply increasing CPU capacity.

Explanation

Correct Answer

D:

Design redundancy or availability measures rather than simply increasing CPU capacity. The governing requirement is: A ticketing platform wants uptime after a single VM host fails. This solution specifically supports the outcome that a controlled host failure leaves the ticketing service available.

Incorrect Answers

A:

This design is appropriate for a different requirement: A payroll team wants predictable monthly performance rather than only occasional availability. Here the decisive outcome must instead be: A controlled host failure leaves the ticketing service available.

B:

That concept addresses this separate situation: A company wants fast restoration of accidentally deleted cloud data. It does not by itself establish the result required here: A controlled host failure leaves the ticketing service available.

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: A controlled host failure leaves the ticketing service available.

Question 130

A ticketing platform wants uptime after a single VM host fails. Which implementation step would best fulfill the stated requirement?

  1. Configure suitable autoscale conditions and a supported baseline capacity.
  2. Define separate load and fault tests in the release acceptance plan.
  3. Deploy eligible instances across supported availability zones and test failover.
  4. 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.

Microsoft Azure Fundamentals (AZ-900) Practice Tests

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