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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?
- The team committed based on peak forecast rather than sustained utilization.
- The team confused provider infrastructure duties with customer configuration duties.
- The team confused capital purchasing with consumption-based cloud estimation.
- 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?
- Prefer flexible consumption pricing when usage is highly uncertain and commitment waste is risky.
- Apply the shared-responsibility model based on the selected service type.
- Explain elasticity as capacity adjustment and availability as service continuity.
- 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?
- Configure an eligible scale set or autoscale rule to add worker instances.
- Separate private factory systems from public-facing portal access paths.
- Deploy the approved site resources in a provider-operated Azure region.
- 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?
- The selection tolerates low usage without paying for large unused committed capacity.
- The recovery plan has a costed service design instead of assuming hardware ownership.
- Each workload placement matches its documented operational-control constraints.
- 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?
- Geographic placement was confused with deployment model ownership.
- The hybrid boundary was designed without required network isolation.
- It applied IaaS hardware-maintenance assumptions to a SaaS application.
- 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?
- Recognize cloud consumption as operating expenditure rather than an upfront server purchase.
- Select vertical scaling of an eligible VM size for one memory-bound process.
- Explain elasticity as capacity adjustment and availability as service continuity.
- 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?
- Choose a service model separately for each application's current operational needs.
- Assign operating-system and middleware patch responsibilities per service category.
- Deallocate unused VMs and review the remaining storage and networking charges.
- 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?
- Capacity tests stay within approved quota and supported region stock.
- Customer-managed identities and data permissions have assigned owners.
- The short-lived infrastructure cost follows actual consumed capacity.
- 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?
- The team treated capacity scaling as equivalent to failure tolerance.
- Geographic placement was confused with deployment model ownership.
- The hybrid boundary was designed without required network isolation.
- 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?
- Define performance predictability using measured latency and capacity baselines.
- Include tested backup and recovery in the reliability strategy.
- Design resilient application patterns such as retries and alternate healthy instances.
- 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?
- 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.
Microsoft Azure Fundamentals (AZ-900) Practice Tests