AZ-104: Configure Virtual Machine
Availability Exam Questions &
Answers (Grade A+)
Plan for maintenance and downtime -
correct answer ✅As an Azure administrator you must be prepared
for planned and unplanned failures. There are three scenarios that
can lead to your virtual machine in Azure being impacted:
unplanned hardware maintenance, unexpected downtime, and
planned maintenance.
Unplanned Hardware Maintenance -
correct answer ✅An Unplanned Hardware Maintenance event
occurs when the Azure platform predicts that the hardware or any
platform component associated to a physical machine, is about to
fail. When the platform predicts a failure, it will issue an unplanned
hardware maintenance event. Azure uses Live Migration technology
to migrate the Virtual Machines from the failing hardware to a
healthy physical machine. Live Migration is a VM preserving
operation that only pauses the Virtual Machine for a short time, but
performance might be reduced before and/or after the event.
Unexpected Downtime -
correct answer ✅Unexpected Downtime is when the hardware or
the physical infrastructure for the virtual machine fails
unexpectedly. Unexpected downtime can include local network
failures, local disk failures, or other rack level failures. When
,AZ-104: Configure Virtual Machine
Availability Exam Questions &
Answers (Grade A+)
detected, the Azure platform automatically migrates (heals) your
virtual machine to a healthy physical machine in the same
datacenter. During the healing procedure, virtual machines
experience downtime (reboot) and in some cases loss of the
temporary drive.
Planned Maintenance -
correct answer ✅Planned Maintenance events are periodic
updates made by Microsoft to the underlying Azure platform to
improve overall reliability, performance, and security of the
platform infrastructure that your virtual machines run on. Most of
these updates are performed without any impact upon your Virtual
Machines or Cloud Services.
Note -
correct answer ✅Microsoft does not automatically update your
VM's OS or software. You have complete control and responsibility
for that. However, the underlying software host and hardware are
periodically patched to ensure reliability and high performance.
Setup availability sets -
correct answer ✅An Availability Set is a logical feature used to
, AZ-104: Configure Virtual Machine
Availability Exam Questions &
Answers (Grade A+)
ensure that a group of related VMs are deployed so that they aren't
all subject to a single point of failure and not all upgraded at the
same time during a host operating system upgrade in the
datacenter. VMs placed in an availability set should perform an
identical set of functionalities and have the same software installed.
Azure ensures that the VMs you place within an Availability Set run
across multiple physical servers, compute racks, storage units, and
network switches. If a hardware or Azure software failure occurs,
only a subset of your VMs are impacted. Your application stays up
and continues to be available to your customers.
Availability Sets are an essential capability when you want to build
reliable cloud solutions. Keep these general principles in mind. -
correct answer ✅For redundancy, configure multiple virtual
machines in an Availability Set.
Configure each application tier into separate Availability Sets.
Combine a Load Balancer with Availability Sets.
Use managed disks with the virtual machines.
Availability Exam Questions &
Answers (Grade A+)
Plan for maintenance and downtime -
correct answer ✅As an Azure administrator you must be prepared
for planned and unplanned failures. There are three scenarios that
can lead to your virtual machine in Azure being impacted:
unplanned hardware maintenance, unexpected downtime, and
planned maintenance.
Unplanned Hardware Maintenance -
correct answer ✅An Unplanned Hardware Maintenance event
occurs when the Azure platform predicts that the hardware or any
platform component associated to a physical machine, is about to
fail. When the platform predicts a failure, it will issue an unplanned
hardware maintenance event. Azure uses Live Migration technology
to migrate the Virtual Machines from the failing hardware to a
healthy physical machine. Live Migration is a VM preserving
operation that only pauses the Virtual Machine for a short time, but
performance might be reduced before and/or after the event.
Unexpected Downtime -
correct answer ✅Unexpected Downtime is when the hardware or
the physical infrastructure for the virtual machine fails
unexpectedly. Unexpected downtime can include local network
failures, local disk failures, or other rack level failures. When
,AZ-104: Configure Virtual Machine
Availability Exam Questions &
Answers (Grade A+)
detected, the Azure platform automatically migrates (heals) your
virtual machine to a healthy physical machine in the same
datacenter. During the healing procedure, virtual machines
experience downtime (reboot) and in some cases loss of the
temporary drive.
Planned Maintenance -
correct answer ✅Planned Maintenance events are periodic
updates made by Microsoft to the underlying Azure platform to
improve overall reliability, performance, and security of the
platform infrastructure that your virtual machines run on. Most of
these updates are performed without any impact upon your Virtual
Machines or Cloud Services.
Note -
correct answer ✅Microsoft does not automatically update your
VM's OS or software. You have complete control and responsibility
for that. However, the underlying software host and hardware are
periodically patched to ensure reliability and high performance.
Setup availability sets -
correct answer ✅An Availability Set is a logical feature used to
, AZ-104: Configure Virtual Machine
Availability Exam Questions &
Answers (Grade A+)
ensure that a group of related VMs are deployed so that they aren't
all subject to a single point of failure and not all upgraded at the
same time during a host operating system upgrade in the
datacenter. VMs placed in an availability set should perform an
identical set of functionalities and have the same software installed.
Azure ensures that the VMs you place within an Availability Set run
across multiple physical servers, compute racks, storage units, and
network switches. If a hardware or Azure software failure occurs,
only a subset of your VMs are impacted. Your application stays up
and continues to be available to your customers.
Availability Sets are an essential capability when you want to build
reliable cloud solutions. Keep these general principles in mind. -
correct answer ✅For redundancy, configure multiple virtual
machines in an Availability Set.
Configure each application tier into separate Availability Sets.
Combine a Load Balancer with Availability Sets.
Use managed disks with the virtual machines.
