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Microsoft AZ-900 Practice Test 46

Question 450

A front-end workload must tolerate updates across multiple VM instances. Which implementation step would best fulfill the stated requirement?

  1. Configure ingress for the public route while restricting admin access.
  2. Place healthy backend instances behind the relevant Azure load balancer.
  3. Provide a supported subnet, NIC and managed OS disk to the VM.
  4. Deploy the supported web runtime and set application configuration.

Explanation

Correct Answer

B:

Place healthy backend instances behind the relevant Azure load balancer. The implementation operationalizes this design choice: Choose an appropriate load balancing service for supported traffic distribution. Acceptance should demonstrate: Client requests move to healthy instances when one backend fails.

Incorrect Answers

A:

This setup is relevant to another workload: A container app should accept HTTP traffic but not expose an internal administrative interface. The current configuration must instead achieve: Client requests move to healthy instances when one backend fails.

C:

This change would be appropriate under a different condition: A firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. Here it would not validate: Client requests move to healthy instances when one backend fails.

D:

This setup is relevant to another workload: An e-commerce team has a simple website and does not want to patch guest OS hosts. The current configuration must instead achieve: Client requests move to healthy instances when one backend fails.

Question 451

A front-end workload must tolerate updates across multiple VM instances. Which result would best demonstrate successful implementation?

  1. The proprietary software installs and runs under the customer's guest administration.
  2. Worker count rises when qualifying demand increases.
  3. Client requests move to healthy instances when one backend fails.
  4. Authorized private addresses communicate between peered VNets.

Explanation

Correct Answer

C:

Client requests move to healthy instances when one backend fails. That directly tests the stated requirement: A front-end workload must tolerate updates across multiple VM instances. It contrasts with the observed failure: Traffic is sent only to an unhealthy, hard-coded VM endpoint.

Incorrect Answers

A:

This observation is evidence for a separate scenario: A legacy finance application requires a full Windows Server guest with installed proprietary software. It does not test the necessary outcome here: Client requests move to healthy instances when one backend fails.

B:

That check tests another control: A retail API must automatically add identical VM workers during holiday traffic. The decisive result for this workload is: Client requests move to healthy instances when one backend fails.

D:

This observation is evidence for a separate scenario: Two business units operate separate VNets in one region and require private connectivity. It does not test the necessary outcome here: Client requests move to healthy instances when one backend fails.

Question 452

A front-end workload must tolerate updates across multiple VM instances. The team observes: Traffic is sent only to an unhealthy, hard-coded VM endpoint. What should the team identify as the primary mechanism behind the problem?

  1. They were not placed in the intended availability-set fault/update separation.
  2. The platform selection did not support the application's required execution environment.
  3. Only layer-four load balancing was used for a layer-seven routing need.
  4. The application lacked health-aware distribution across replicas.

Explanation

Correct Answer

D:

The application lacked health-aware distribution across replicas. That explains the symptom: Traffic is sent only to an unhealthy, hard-coded VM endpoint. The targeted corrective action is: Place healthy backend instances behind the relevant Azure load balancer.

Incorrect Answers

A:

This cause is consistent with a different issue: Both critical VMs are interrupted by a shared maintenance event. It does not account for the reported symptom here: Traffic is sent only to an unhealthy, hard-coded VM endpoint.

B:

The alternate mechanism would more directly produce this other failure: The application fails because the managed web runtime cannot load its libraries. The current incident instead involves: Traffic is sent only to an unhealthy, hard-coded VM endpoint.

C:

That explanation belongs to a different fault pattern: All URLs route to one backend despite distinct application paths. It does not explain why traffic is sent only to an unhealthy, hard-coded VM endpoint.

Question 453

A web application needs HTTP routing based on hostnames and URL paths. Which design choice best fits the stated business constraint?

  1. Choose Azure App Service for eligible managed web-app hosting.
  2. Use Azure Application Gateway for eligible layer-seven routing.
  3. Distinguish public service access from private IP-bound endpoint access.
  4. Use an Azure Virtual Network as the logical private networking boundary.

Explanation

Correct Answer

B:

Use Azure Application Gateway for eligible layer-seven routing. The governing requirement is: A web application needs HTTP routing based on hostnames and URL paths. This solution specifically supports the outcome that requests to two URL paths reach their respective backend pools.

Incorrect Answers

A:

This design is appropriate for a different requirement: An e-commerce team has a simple website and does not want to patch guest OS hosts. Here the decisive outcome must instead be: Requests to two URL paths reach their respective backend pools.

C:

This option solves a different planning problem: A new cloud student asks whether public and private endpoints both mean publicly reachable Azure services. The current acceptance criterion is specific: Requests to two URL paths reach their respective backend pools.

D:

This design is appropriate for a different requirement: A security team needs to place two front-end VMs on the same isolated Azure network. Here the decisive outcome must instead be: Requests to two URL paths reach their respective backend pools.

Question 454

A web application needs HTTP routing based on hostnames and URL paths. Which Azure setup action best follows from this scenario?

  1. Deploy the container app with ingress and scaling appropriate to the API.
  2. Configure listeners and rules for the specified host and paths.
  3. Deploy the VM without a public IP when private connectivity suffices.
  4. Create Kubernetes deployment and service resources on the AKS cluster.

Explanation

Correct Answer

B:

Configure listeners and rules for the specified host and paths. The implementation operationalizes this design choice: Use Azure Application Gateway for eligible layer-seven routing. Acceptance should demonstrate: Requests to two URL paths reach their respective backend pools.

Incorrect Answers

A:

This setup is relevant to another workload: A developer wants a simple containerized web API without managing a Kubernetes cluster. The current configuration must instead achieve: Requests to two URL paths reach their respective backend pools.

C:

This change would be appropriate under a different condition: A service owner uses a VM and assumes a public IP is always required. Here it would not validate: Requests to two URL paths reach their respective backend pools.

D:

This setup is relevant to another workload: An enterprise has many container replicas and needs automated rollouts and service discovery. The current configuration must instead achieve: Requests to two URL paths reach their respective backend pools.

Question 455

A web application needs HTTP routing based on hostnames and URL paths. Which verification outcome should the team expect from the right design?

  1. Authorized users open their virtual desktop sessions remotely.
  2. Requests to two URL paths reach their respective backend pools.
  3. The VM boots with its expected disk and private network attachment.
  4. Planned maintenance does not remove both members at once in the validated model.

Explanation

Correct Answer

B:

Requests to two URL paths reach their respective backend pools. That directly tests the stated requirement: A web application needs HTTP routing based on hostnames and URL paths. It contrasts with the observed failure: All URLs route to one backend despite distinct application paths.

Incorrect Answers

A:

This observation is evidence for a separate scenario: A company wants hosted Windows desktops accessed by employees from different locations. It does not test the necessary outcome here: Requests to two URL paths reach their respective backend pools.

C:

The test is relevant when a firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. It cannot establish the specified acceptance result: Requests to two URL paths reach their respective backend pools.

D:

This observation is evidence for a separate scenario: Two critical VMs in one region need separation from common host hardware maintenance faults. It does not test the necessary outcome here: Requests to two URL paths reach their respective backend pools.

Question 456

A web application needs HTTP routing based on hostnames and URL paths. The team observes: All URLs route to one backend despite distinct application paths. Which underlying mistake most directly explains the reported symptom?

  1. The network filtering rules were missing or excessively permissive.
  2. They were not placed in the intended availability-set fault/update separation.
  3. A public IP and permissive rule were added against private-only intent.
  4. Only layer-four load balancing was used for a layer-seven routing need.

Explanation

Correct Answer

D:

Only layer-four load balancing was used for a layer-seven routing need. That explains the symptom: All URLs route to one backend despite distinct application paths. The targeted corrective action is: Configure listeners and rules for the specified host and paths.

Incorrect Answers

A:

This cause is consistent with a different issue: A VM has a public IP and every management port accepts traffic. It does not account for the reported symptom here: All URLs route to one backend despite distinct application paths.

B:

The alternate mechanism would more directly produce this other failure: Both critical VMs are interrupted by a shared maintenance event. The current incident instead involves: All URLs route to one backend despite distinct application paths.

C:

That explanation belongs to a different fault pattern: The VM exposes an RDP/SSH public endpoint to everyone. It does not explain why all URLs route to one backend despite distinct application paths.

Question 457

A firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. What is the most appropriate cloud concept or service for this need?

  1. Plan virtual networking, storage and compute resources alongside the VM.
  2. Use an Azure Virtual Network as the logical private networking boundary.
  3. Use Azure Application Gateway for eligible layer-seven routing.
  4. Use correct private DNS integration for private endpoint name resolution.

Explanation

Correct Answer

A:

Plan virtual networking, storage and compute resources alongside the VM. The governing requirement is: A firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. This solution specifically supports the outcome that the VM boots with its expected disk and private network attachment.

Incorrect Answers

B:

That concept addresses this separate situation: A security team needs to place two front-end VMs on the same isolated Azure network. It does not by itself establish the result required here: The VM boots with its expected disk and private network attachment.

C:

This option solves a different planning problem: A web application needs HTTP routing based on hostnames and URL paths. The current acceptance criterion is specific: The VM boots with its expected disk and private network attachment.

D:

This design is appropriate for a different requirement: A company wants to resolve private endpoint hostnames to their private addresses. Here the decisive outcome must instead be: The VM boots with its expected disk and private network attachment.

Question 458

A firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. What should the team configure or perform to implement the correct approach?

  1. Configure ingress for the public route while restricting admin access.
  2. Place tiers in defined subnets and apply required NSG rules.
  3. Connect the function to a compatible trigger with appropriate rights.
  4. Provide a supported subnet, NIC and managed OS disk to the VM.

Explanation

Correct Answer

D:

Provide a supported subnet, NIC and managed OS disk to the VM. The implementation operationalizes this design choice: Plan virtual networking, storage and compute resources alongside the VM. Acceptance should demonstrate: The VM boots with its expected disk and private network attachment.

Incorrect Answers

A:

This setup is relevant to another workload: A container app should accept HTTP traffic but not expose an internal administrative interface. The current configuration must instead achieve: The VM boots with its expected disk and private network attachment.

B:

That action implements a different requirement: A three-tier app must isolate database traffic from front-end workload traffic. It does not establish the required result in this case: The VM boots with its expected disk and private network attachment.

C:

This change would be appropriate under a different condition: A data collector runs short tasks when messages arrive, and demand varies sharply. Here it would not validate: The VM boots with its expected disk and private network attachment.

Question 459

A firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. Which evidence best confirms the requirement is being met?

  1. The service runs with the same packaged dependencies in test and production.
  2. The private connectivity service uses its dedicated provider path.
  3. The VM boots with its expected disk and private network attachment.
  4. Authorized HTTPS requests work while prohibited management attempts fail.

Explanation

Correct Answer

C:

The VM boots with its expected disk and private network attachment. That directly tests the stated requirement: A firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. It contrasts with the observed failure: A VM declaration fails because essential network/disk prerequisites are absent.

Incorrect Answers

A:

This observation is evidence for a separate scenario: A team must package a microservice and its libraries consistently across environments. It does not test the necessary outcome here: The VM boots with its expected disk and private network attachment.

B:

That check tests another control: A manufacturer requires private dedicated connectivity between its WAN provider and Azure. The decisive result for this workload is: The VM boots with its expected disk and private network attachment.

D:

This observation is evidence for a separate scenario: A security administrator wants to allow HTTPS but block unsolicited remote management to a VM. It does not test the necessary outcome here: The VM boots with its expected disk and private network attachment.

Question 460

A firm deploys a Linux Azure VM and asks what supporting Azure resources it requires. The team observes: A VM declaration fails because essential network/disk prerequisites are absent. What is the most likely cause of the observed failure?

  1. The deployment included a VM object without required supporting resources.
  2. The design ignored a suitable event-driven managed service.
  3. An individual unmanaged VM was used instead of a scalable instance group.
  4. An unmanaged container runtime was chosen instead of orchestration.

Explanation

Correct Answer

A:

The deployment included a VM object without required supporting resources. That explains the symptom: A VM declaration fails because essential network/disk prerequisites are absent. The targeted corrective action is: Provide a supported subnet, NIC and managed OS disk to the VM.

Incorrect Answers

B:

The alternate mechanism would more directly produce this other failure: A full-time VM waits idle for rare messages. The current incident instead involves: A VM declaration fails because essential network/disk prerequisites are absent.

C:

That explanation belongs to a different fault pattern: Operators manually create each VM during every traffic spike. It does not explain why a VM declaration fails because essential network/disk prerequisites are absent.

D:

This cause is consistent with a different issue: Container teams are forced to script every host and scheduler task manually. It does not account for the reported symptom here: A VM declaration fails because essential network/disk prerequisites are absent.

Microsoft Azure Fundamentals (AZ-900) Practice Tests

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