Microsoft AZ-104 Azure VM Availability and Scale Sets Practice Test

 

Topic 11 focuses on Availability Sets, Availability Zones, and Virtual Machine Scale Sets for the Microsoft Certified: Azure Administrator Associate certification and the AZ-104 exam, using Microsoft Azure administration scenarios. For broader exam preparation, review the Microsoft Azure Administrator AZ-104 Exam Dumps page. Each question includes a concise explanation of the correct answer and the technical reason the other choices are incorrect.

Question 1

To reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs, which Azure configuration should be selected?

1. Fault domain
2. Virtual Machine Scale Set
3. Flexible orchestration
4. Availability set

Correct Answer: D

 

Correct Answer

Answer D is correct because Availability set is a logical grouping that spreads VMs across fault and update domains within a datacenter deployment. It directly supports the requirement to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs.

Incorrect Answers

Answer A is incorrect because Fault domain is used to spread availability-set VMs across independent hardware failure boundaries; it does not provide the capability described in the scenario.

Answer B is incorrect because Virtual Machine Scale Set is used to deploy and operate multiple VM instances with consistent configuration and scaling; it does not provide the capability described in the scenario.

Answer C is incorrect because Flexible orchestration is used to combine scale-set orchestration with greater flexibility over individual VM instances; it does not provide the capability described in the scenario.

 

Question 2

For Availability set, which administrative outcome is expected?

1. Reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs
2. Increase or decrease VM Scale Set capacity automatically as demand changes
3. Place an individual VM instance in a chosen fault-isolated zone
4. Deploy and operate multiple VM instances with consistent configuration and scaling

Correct Answer: A

 

Correct Answer

Answer A is correct because Availability set is a logical grouping that spreads VMs across fault and update domains within a datacenter deployment. Its intended administrative use is to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs.

Incorrect Answers

Answer B is incorrect because that outcome belongs to Autoscale, which is used to increase or decrease VM Scale Set capacity automatically as demand changes; it is not the primary purpose of Availability set.

Answer C is incorrect because that outcome belongs to Zonal virtual machine, which is used to place an individual VM instance in a chosen fault-isolated zone; it is not the primary purpose of Availability set.

Answer D is incorrect because that outcome belongs to Virtual Machine Scale Set, which is used to deploy and operate multiple VM instances with consistent configuration and scaling; it is not the primary purpose of Availability set.

 

Question 3

To spread availability-set VMs across independent hardware failure boundaries, which Azure configuration should be selected?

1. Availability set
2. Uniform orchestration
3. Fault domain
4. Virtual Machine Scale Set

Correct Answer: C

 

Correct Answer

Answer C is correct because Fault domain is a grouping representing a set of hardware that shares a common power and network failure boundary. It directly supports the requirement to spread availability-set VMs across independent hardware failure boundaries.

Incorrect Answers

Answer A is incorrect because Availability set is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it does not provide the capability described in the scenario.

Answer B is incorrect because Uniform orchestration is used to operate highly consistent VM instances as a single scalable resource; it does not provide the capability described in the scenario.

Answer D is incorrect because Virtual Machine Scale Set is used to deploy and operate multiple VM instances with consistent configuration and scaling; it does not provide the capability described in the scenario.

 

Question 4

For Fault domain, which administrative outcome is expected?

1. Spread availability-set VMs across independent hardware failure boundaries
2. Reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs
3. Increase available compute capacity by adding instances
4. Deploy and operate multiple VM instances with consistent configuration and scaling

Correct Answer: A

 

Correct Answer

Answer A is correct because Fault domain is a grouping representing a set of hardware that shares a common power and network failure boundary. Its intended administrative use is to spread availability-set VMs across independent hardware failure boundaries.

Incorrect Answers

Answer B is incorrect because that outcome belongs to Availability set, which is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it is not the primary purpose of Fault domain.

Answer C is incorrect because that outcome belongs to Scale-out operation, which is used to increase available compute capacity by adding instances; it is not the primary purpose of Fault domain.

Answer D is incorrect because that outcome belongs to Virtual Machine Scale Set, which is used to deploy and operate multiple VM instances with consistent configuration and scaling; it is not the primary purpose of Fault domain.

 

Question 5

To sequence planned maintenance so not all application instances are restarted at once, which Azure configuration should be selected?

1. Availability set
2. Scale-in operation
3. Update domain
4. Availability zone

Correct Answer: C

 

Correct Answer

Answer C is correct because Update domain is a logical group of availability-set VMs that can be rebooted together during planned platform maintenance. It directly supports the requirement to sequence planned maintenance so not all application instances are restarted at once.

Incorrect Answers

Answer A is incorrect because Availability set is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it does not provide the capability described in the scenario.

Answer B is incorrect because Scale-in operation is used to reduce compute capacity and cost when fewer instances are required; it does not provide the capability described in the scenario.

Answer D is incorrect because Availability zone is used to protect a workload from a datacenter-level failure inside a supported Azure region; it does not provide the capability described in the scenario.

 

Question 6

For Update domain, which administrative outcome is expected?

1. Increase available compute capacity by adding instances
2. Help the scale set distinguish healthy and unhealthy application instances
3. Combine scale-set orchestration with greater flexibility over individual VM instances
4. Sequence planned maintenance so not all application instances are restarted at once

Correct Answer: D

 

Correct Answer

Answer D is correct because Update domain is a logical group of availability-set VMs that can be rebooted together during planned platform maintenance. Its intended administrative use is to sequence planned maintenance so not all application instances are restarted at once.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Scale-out operation, which is used to increase available compute capacity by adding instances; it is not the primary purpose of Update domain.

Answer B is incorrect because that outcome belongs to Application health monitoring for VM Scale Sets, which is used to help the scale set distinguish healthy and unhealthy application instances; it is not the primary purpose of Update domain.

Answer C is incorrect because that outcome belongs to Flexible orchestration, which is used to combine scale-set orchestration with greater flexibility over individual VM instances; it is not the primary purpose of Update domain.

 

Question 7

To protect a workload from a datacenter-level failure inside a supported Azure region, which Azure configuration should be selected?

1. Availability zone
2. Flexible orchestration
3. Application health monitoring for VM Scale Sets
4. Scale-in operation

Correct Answer: A

 

Correct Answer

Answer A is correct because Availability zone is a physically separate datacenter location within an Azure region with independent power, cooling, and networking. It directly supports the requirement to protect a workload from a datacenter-level failure inside a supported Azure region.

Incorrect Answers

Answer B is incorrect because Flexible orchestration is used to combine scale-set orchestration with greater flexibility over individual VM instances; it does not provide the capability described in the scenario.

Answer C is incorrect because Application health monitoring for VM Scale Sets is used to help the scale set distinguish healthy and unhealthy application instances; it does not provide the capability described in the scenario.

Answer D is incorrect because Scale-in operation is used to reduce compute capacity and cost when fewer instances are required; it does not provide the capability described in the scenario.

 

Question 8

For Availability zone, which administrative outcome is expected?

1. Reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs
2. Increase available compute capacity by adding instances
3. Protect a workload from a datacenter-level failure inside a supported Azure region
4. Place an individual VM instance in a chosen fault-isolated zone

Correct Answer: C

 

Correct Answer

Answer C is correct because Availability zone is a physically separate datacenter location within an Azure region with independent power, cooling, and networking. Its intended administrative use is to protect a workload from a datacenter-level failure inside a supported Azure region.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Availability set, which is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it is not the primary purpose of Availability zone.

Answer B is incorrect because that outcome belongs to Scale-out operation, which is used to increase available compute capacity by adding instances; it is not the primary purpose of Availability zone.

Answer D is incorrect because that outcome belongs to Zonal virtual machine, which is used to place an individual VM instance in a chosen fault-isolated zone; it is not the primary purpose of Availability zone.

 

Question 9

To place an individual VM instance in a chosen fault-isolated zone, which Azure configuration should be selected?

1. Autoscale
2. Flexible orchestration
3. Availability zone
4. Zonal virtual machine

Correct Answer: D

 

Correct Answer

Answer D is correct because Zonal virtual machine is a VM pinned to a specific availability zone. It directly supports the requirement to place an individual VM instance in a chosen fault-isolated zone.

Incorrect Answers

Answer A is incorrect because Autoscale is used to increase or decrease VM Scale Set capacity automatically as demand changes; it does not provide the capability described in the scenario.

Answer B is incorrect because Flexible orchestration is used to combine scale-set orchestration with greater flexibility over individual VM instances; it does not provide the capability described in the scenario.

Answer C is incorrect because Availability zone is used to protect a workload from a datacenter-level failure inside a supported Azure region; it does not provide the capability described in the scenario.

 

Question 10

For Zonal virtual machine, which administrative outcome is expected?

1. Deploy and operate multiple VM instances with consistent configuration and scaling
2. Place an individual VM instance in a chosen fault-isolated zone
3. Spread availability-set VMs across independent hardware failure boundaries
4. Increase available compute capacity by adding instances

Correct Answer: B

 

Correct Answer

Answer B is correct because Zonal virtual machine is a VM pinned to a specific availability zone. Its intended administrative use is to place an individual VM instance in a chosen fault-isolated zone.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Virtual Machine Scale Set, which is used to deploy and operate multiple VM instances with consistent configuration and scaling; it is not the primary purpose of Zonal virtual machine.

Answer C is incorrect because that outcome belongs to Fault domain, which is used to spread availability-set VMs across independent hardware failure boundaries; it is not the primary purpose of Zonal virtual machine.

Answer D is incorrect because that outcome belongs to Scale-out operation, which is used to increase available compute capacity by adding instances; it is not the primary purpose of Zonal virtual machine.

 

Question 11

To deploy and operate multiple VM instances with consistent configuration and scaling, which Azure configuration should be selected?

1. Availability set
2. Virtual Machine Scale Set
3. Scale-in operation
4. Availability zone

Correct Answer: B

 

Correct Answer

Answer B is correct because Virtual Machine Scale Set is an Azure compute resource that manages a group of load-balanced or similarly configured VM instances. It directly supports the requirement to deploy and operate multiple VM instances with consistent configuration and scaling.

Incorrect Answers

Answer A is incorrect because Availability set is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it does not provide the capability described in the scenario.

Answer C is incorrect because Scale-in operation is used to reduce compute capacity and cost when fewer instances are required; it does not provide the capability described in the scenario.

Answer D is incorrect because Availability zone is used to protect a workload from a datacenter-level failure inside a supported Azure region; it does not provide the capability described in the scenario.

 

Question 12

For Virtual Machine Scale Set, which administrative outcome is expected?

1. Help the scale set distinguish healthy and unhealthy application instances
2. Sequence planned maintenance so not all application instances are restarted at once
3. Deploy and operate multiple VM instances with consistent configuration and scaling
4. Place an individual VM instance in a chosen fault-isolated zone

Correct Answer: C

 

Correct Answer

Answer C is correct because Virtual Machine Scale Set is an Azure compute resource that manages a group of load-balanced or similarly configured VM instances. Its intended administrative use is to deploy and operate multiple VM instances with consistent configuration and scaling.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Application health monitoring for VM Scale Sets, which is used to help the scale set distinguish healthy and unhealthy application instances; it is not the primary purpose of Virtual Machine Scale Set.

Answer B is incorrect because that outcome belongs to Update domain, which is used to sequence planned maintenance so not all application instances are restarted at once; it is not the primary purpose of Virtual Machine Scale Set.

Answer D is incorrect because that outcome belongs to Zonal virtual machine, which is used to place an individual VM instance in a chosen fault-isolated zone; it is not the primary purpose of Virtual Machine Scale Set.

 

Question 13

To operate highly consistent VM instances as a single scalable resource, which Azure configuration should be selected?

1. Flexible orchestration
2. Scale-out operation
3. Uniform orchestration
4. Application health monitoring for VM Scale Sets

Correct Answer: C

 

Correct Answer

Answer C is correct because Uniform orchestration is a VM Scale Sets orchestration mode optimized for large sets of identical instances managed from a common scale-set model. It directly supports the requirement to operate highly consistent VM instances as a single scalable resource.

Incorrect Answers

Answer A is incorrect because Flexible orchestration is used to combine scale-set orchestration with greater flexibility over individual VM instances; it does not provide the capability described in the scenario.

Answer B is incorrect because Scale-out operation is used to increase available compute capacity by adding instances; it does not provide the capability described in the scenario.

Answer D is incorrect because Application health monitoring for VM Scale Sets is used to help the scale set distinguish healthy and unhealthy application instances; it does not provide the capability described in the scenario.

 

Question 14

For Uniform orchestration, which administrative outcome is expected?

1. Reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs
2. Operate highly consistent VM instances as a single scalable resource
3. Spread availability-set VMs across independent hardware failure boundaries
4. Place an individual VM instance in a chosen fault-isolated zone

Correct Answer: B

 

Correct Answer

Answer B is correct because Uniform orchestration is a VM Scale Sets orchestration mode optimized for large sets of identical instances managed from a common scale-set model. Its intended administrative use is to operate highly consistent VM instances as a single scalable resource.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Availability set, which is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it is not the primary purpose of Uniform orchestration.

Answer C is incorrect because that outcome belongs to Fault domain, which is used to spread availability-set VMs across independent hardware failure boundaries; it is not the primary purpose of Uniform orchestration.

Answer D is incorrect because that outcome belongs to Zonal virtual machine, which is used to place an individual VM instance in a chosen fault-isolated zone; it is not the primary purpose of Uniform orchestration.

 

Question 15

To combine scale-set orchestration with greater flexibility over individual VM instances, which Azure configuration should be selected?

1. Scale-out operation
2. Availability zone
3. Flexible orchestration
4. Virtual Machine Scale Set

Correct Answer: C

 

Correct Answer

Answer C is correct because Flexible orchestration is a VM Scale Sets orchestration mode that provides more VM-level control and can manage a mix of standard VM capabilities. It directly supports the requirement to combine scale-set orchestration with greater flexibility over individual VM instances.

Incorrect Answers

Answer A is incorrect because Scale-out operation is used to increase available compute capacity by adding instances; it does not provide the capability described in the scenario.

Answer B is incorrect because Availability zone is used to protect a workload from a datacenter-level failure inside a supported Azure region; it does not provide the capability described in the scenario.

Answer D is incorrect because Virtual Machine Scale Set is used to deploy and operate multiple VM instances with consistent configuration and scaling; it does not provide the capability described in the scenario.

 

Question 16

For Flexible orchestration, which administrative outcome is expected?

1. Spread availability-set VMs across independent hardware failure boundaries
2. Combine scale-set orchestration with greater flexibility over individual VM instances
3. Help the scale set distinguish healthy and unhealthy application instances
4. Operate highly consistent VM instances as a single scalable resource

Correct Answer: B

 

Correct Answer

Answer B is correct because Flexible orchestration is a VM Scale Sets orchestration mode that provides more VM-level control and can manage a mix of standard VM capabilities. Its intended administrative use is to combine scale-set orchestration with greater flexibility over individual VM instances.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Fault domain, which is used to spread availability-set VMs across independent hardware failure boundaries; it is not the primary purpose of Flexible orchestration.

Answer C is incorrect because that outcome belongs to Application health monitoring for VM Scale Sets, which is used to help the scale set distinguish healthy and unhealthy application instances; it is not the primary purpose of Flexible orchestration.

Answer D is incorrect because that outcome belongs to Uniform orchestration, which is used to operate highly consistent VM instances as a single scalable resource; it is not the primary purpose of Flexible orchestration.

 

Question 17

To increase or decrease VM Scale Set capacity automatically as demand changes, which Azure configuration should be selected?

1. Zonal virtual machine
2. Autoscale
3. Scale-in operation
4. Scale-out operation

Correct Answer: B

 

Correct Answer

Answer B is correct because Autoscale is an Azure Monitor capability that changes instance count according to schedules or metric-based rules. It directly supports the requirement to increase or decrease VM Scale Set capacity automatically as demand changes.

Incorrect Answers

Answer A is incorrect because Zonal virtual machine is used to place an individual VM instance in a chosen fault-isolated zone; it does not provide the capability described in the scenario.

Answer C is incorrect because Scale-in operation is used to reduce compute capacity and cost when fewer instances are required; it does not provide the capability described in the scenario.

Answer D is incorrect because Scale-out operation is used to increase available compute capacity by adding instances; it does not provide the capability described in the scenario.

 

Question 18

For Autoscale, which administrative outcome is expected?

1. Spread availability-set VMs across independent hardware failure boundaries
2. Reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs
3. Place an individual VM instance in a chosen fault-isolated zone
4. Increase or decrease VM Scale Set capacity automatically as demand changes

Correct Answer: D

 

Correct Answer

Answer D is correct because Autoscale is an Azure Monitor capability that changes instance count according to schedules or metric-based rules. Its intended administrative use is to increase or decrease VM Scale Set capacity automatically as demand changes.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Fault domain, which is used to spread availability-set VMs across independent hardware failure boundaries; it is not the primary purpose of Autoscale.

Answer B is incorrect because that outcome belongs to Availability set, which is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it is not the primary purpose of Autoscale.

Answer C is incorrect because that outcome belongs to Zonal virtual machine, which is used to place an individual VM instance in a chosen fault-isolated zone; it is not the primary purpose of Autoscale.

 

Question 19

To increase available compute capacity by adding instances, which Azure configuration should be selected?

1. Scale-out operation
2. Zonal virtual machine
3. Availability set
4. Autoscale

Correct Answer: A

 

Correct Answer

Answer A is correct because Scale-out operation is an action that adds VM instances to a scale set. It directly supports the requirement to increase available compute capacity by adding instances.

Incorrect Answers

Answer B is incorrect because Zonal virtual machine is used to place an individual VM instance in a chosen fault-isolated zone; it does not provide the capability described in the scenario.

Answer C is incorrect because Availability set is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it does not provide the capability described in the scenario.

Answer D is incorrect because Autoscale is used to increase or decrease VM Scale Set capacity automatically as demand changes; it does not provide the capability described in the scenario.

 

Question 20

For Scale-out operation, which administrative outcome is expected?

1. Spread availability-set VMs across independent hardware failure boundaries
2. Help the scale set distinguish healthy and unhealthy application instances
3. Increase or decrease VM Scale Set capacity automatically as demand changes
4. Increase available compute capacity by adding instances

Correct Answer: D

 

Correct Answer

Answer D is correct because Scale-out operation is an action that adds VM instances to a scale set. Its intended administrative use is to increase available compute capacity by adding instances.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Fault domain, which is used to spread availability-set VMs across independent hardware failure boundaries; it is not the primary purpose of Scale-out operation.

Answer B is incorrect because that outcome belongs to Application health monitoring for VM Scale Sets, which is used to help the scale set distinguish healthy and unhealthy application instances; it is not the primary purpose of Scale-out operation.

Answer C is incorrect because that outcome belongs to Autoscale, which is used to increase or decrease VM Scale Set capacity automatically as demand changes; it is not the primary purpose of Scale-out operation.

 

Question 21

To reduce compute capacity and cost when fewer instances are required, which Azure configuration should be selected?

1. Scale-in operation
2. Availability set
3. Availability zone
4. Uniform orchestration

Correct Answer: A

 

Correct Answer

Answer A is correct because Scale-in operation is an action that removes VM instances from a scale set. It directly supports the requirement to reduce compute capacity and cost when fewer instances are required.

Incorrect Answers

Answer B is incorrect because Availability set is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it does not provide the capability described in the scenario.

Answer C is incorrect because Availability zone is used to protect a workload from a datacenter-level failure inside a supported Azure region; it does not provide the capability described in the scenario.

Answer D is incorrect because Uniform orchestration is used to operate highly consistent VM instances as a single scalable resource; it does not provide the capability described in the scenario.

 

Question 22

For Scale-in operation, which administrative outcome is expected?

1. Operate highly consistent VM instances as a single scalable resource
2. Reduce compute capacity and cost when fewer instances are required
3. Protect a workload from a datacenter-level failure inside a supported Azure region
4. Increase or decrease VM Scale Set capacity automatically as demand changes

Correct Answer: B

 

Correct Answer

Answer B is correct because Scale-in operation is an action that removes VM instances from a scale set. Its intended administrative use is to reduce compute capacity and cost when fewer instances are required.

Incorrect Answers

Answer A is incorrect because that outcome belongs to Uniform orchestration, which is used to operate highly consistent VM instances as a single scalable resource; it is not the primary purpose of Scale-in operation.

Answer C is incorrect because that outcome belongs to Availability zone, which is used to protect a workload from a datacenter-level failure inside a supported Azure region; it is not the primary purpose of Scale-in operation.

Answer D is incorrect because that outcome belongs to Autoscale, which is used to increase or decrease VM Scale Set capacity automatically as demand changes; it is not the primary purpose of Scale-in operation.

 

Question 23

To help the scale set distinguish healthy and unhealthy application instances, which Azure configuration should be selected?

1. Zonal virtual machine
2. Availability set
3. Autoscale
4. Application health monitoring for VM Scale Sets

Correct Answer: D

 

Correct Answer

Answer D is correct because Application health monitoring for VM Scale Sets is health information used to identify unhealthy scale-set instances for upgrade or repair decisions. It directly supports the requirement to help the scale set distinguish healthy and unhealthy application instances.

Incorrect Answers

Answer A is incorrect because Zonal virtual machine is used to place an individual VM instance in a chosen fault-isolated zone; it does not provide the capability described in the scenario.

Answer B is incorrect because Availability set is used to reduce the chance that a single hardware fault or planned maintenance event affects all grouped VMs; it does not provide the capability described in the scenario.

Answer C is incorrect because Autoscale is used to increase or decrease VM Scale Set capacity automatically as demand changes; it does not provide the capability described in the scenario.

 

Question 24

For Application health monitoring for VM Scale Sets, which administrative outcome is expected?

1. Help the scale set distinguish healthy and unhealthy application instances
2. Deploy and operate multiple VM instances with consistent configuration and scaling
3. Increase or decrease VM Scale Set capacity automatically as demand changes
4. Spread availability-set VMs across independent hardware failure boundaries

Correct Answer: A

 

Correct Answer

Answer A is correct because Application health monitoring for VM Scale Sets is health information used to identify unhealthy scale-set instances for upgrade or repair decisions. Its intended administrative use is to help the scale set distinguish healthy and unhealthy application instances.

Incorrect Answers

Answer B is incorrect because that outcome belongs to Virtual Machine Scale Set, which is used to deploy and operate multiple VM instances with consistent configuration and scaling; it is not the primary purpose of Application health monitoring for VM Scale Sets.

Answer C is incorrect because that outcome belongs to Autoscale, which is used to increase or decrease VM Scale Set capacity automatically as demand changes; it is not the primary purpose of Application health monitoring for VM Scale Sets.

Answer D is incorrect because that outcome belongs to Fault domain, which is used to spread availability-set VMs across independent hardware failure boundaries; it is not the primary purpose of Application health monitoring for VM Scale Sets.