(Unit 1 of 9) Describe Azure Virtual Machines

Question 1

What as-a-service do VMs provide?

Answer 1

VMs provide infrastructure as a service (IaaS) in the form of a virtualized server
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(you still need to configure, update, and maintain the software)

Question 2

List 4 benifits to VMs

Answer 2

1. Total control over the operating system (OS).
2. The ability to run custom software.
3. To use custom hosting configurations.
4. Flexibility of virtualization without having to buy and maintain the physical hardware

Question 3

Describe VM SCALE SETS

Answer 3

Virtual machine scale sets let you create and manage a group of identical, load-balanced VMs.

Question 4

Describe VM AVAILABILITY SETS

Answer 4

Availability sets are designed to ensure that VMs stagger updates and have varied power and network connectivity, preventing you from losing all your VMs with a single network or power failure.

Question 5

Name 2 ways that VM availability sets group VMs

Answer 5

1. Update domain
2. Fault domain

Question 6

Explain the 1st group of VM availability sets.

Answer 6

The update domain groups VMs that can be **rebooted **at the same time.

This allows you to apply updates while knowing that only one update domain grouping will be offline at a time.

Question 7

Explain the 2nd group of VM availability sets.

Answer 7

The fault domain groups your VMs by common power source and network switch.

By default, an availability set will split your VMs across up to three fault domains.

Question 8

Give some examples of when to use a VM

Answer 8

1. During testing and development.
2. When running applications in the cloud.
3. When extending your datacenter to the cloud
4. During disaster recovery