Skill 3.3 Configure VMs

Question 1

What are the ways to create a VM in Azure

Answer 1

Azure Portal
Azure Powershell and CLI
Azure REsource Manager

Question 2

What is Azure Key Vault

Answer 2

Used to encrypt Azure VMs

Question 3

If you want to create a disk using a customer managed key (cmk) what do you need to do

Answer 3

create a disk encryption set first

Question 4

What are the three Server Side Encryption Models

Answer 4

1.service-managed key
2. customer-managed key
3. service-managed keys in customer controlled hardware

Question 5

What is the Service managed key server side encryption model

Answer 5

Provides a combination of control and convenience with low overhead

Question 6

Describe Customer-Managed Keys Server-side encryption model

Answer 6

Gives you control over your keys, including bringing your own key(BYOK) support or allows you to generate new ones

Question 7

Describe Service-Managed keys in customer-controlled hardware

Answer 7

Enables you to manage keys in your own proprietary respository outside of MSFT control. This is called host your own key (HYOK). It’s complex and not supported by most services

Question 8

Where can VMs be moved to

Answer 8

a different resource group, subscription, availability zone, and another region.

Question 9

What is a risk of moving a VM

Answer 9

any existing scripts that target this resource will quit working until they are updated

Question 10

How can you retrieve a resource ID

Answer 10

By using Azure Portal, Powershell or CLI

Question 11

General Purpose VM

Answer 11

Small to medium scale development environments. Has a balanced CPU-to-Memory ratio

Question 12

Compute Optimized VM

Answer 12

Used for CPU intensive workloads in medium-scale environments. Ideal for networking appliances or batch process in a small environment

Question 13

Memory optimized CPU

Answer 13

This size type provides higher memory compared to CPU and is ideal for medium-scale database servers. With high memory, these sizes can be used for caches, or it can be used in memory analytics.

Question 14

Storage Optimized

Answer 14

Offers high disk throughput and IO, good for large transactional databases like Cassandra, MongoDB, and so on. It can be used for Big Data and data warehousing.

Question 15

GPU Optimized

Answer 15

Provides VMs with one or many NVIDIA GPUs. It provides high compute and graphics, which are ideal for visualization workloads.

Question 16

High Performance Compute

Answer 16

Capable of handling batch processing, molecular modeling, and fluid dynamics. This type offers substantial CPU power and diverse options for low-latency RDMA networking using FDR InfiniBand and several memory configurations to support memory-intensive computational requirements.

Question 17

What are primary considerations when changing a VM size

Answer 17

you must ensure that the region your VM is deployed to supports the instance size that is desired,
new size must be supported in teh current hardware cluster

Question 18

What must be done before changing a hardware cluster

Answer 18

All the VMs in the availability set must be restarted

Question 19

What are the sources for creating a new managed disk

Answer 19

Snapshot – If selected, you can browse for snapshots in the current subscription and location
storage blob – allows you to browse storage accounts in all subscriptions that you have access to
none – new VM is created

Question 20

What options can be set in the networking blade when provisioning a new virtual machien

Answer 20

Virtual network, subnet, and public IP
Network security group for the NIC
public inbound ports that should be open
if accellerated networking should be enabled
If the VM should be included in an exisitng load balancer

Question 21

Networking Security Group

Answer 21

networking filter containing a list of security rules which control network traffic when applied

Question 22

Application Security Group (ASG)

Answer 22

Enables you to define network security policies based on workloads with rules focused on applications instead of IP and network addresses

Question 23

What is accelerated Networking

Answer 23

enables single root I/O virtualization to a virtual machine which improves networking performance

Question 24

What are the requirements for accelerated networkign

Answer 24

VM must be a supported size
VM must use a supported Azure Gallery Image
All VMs in an availability set or VMSS must be stopped/deallocated before activate

Question 25

VM size requirements for accelerated networking

Answer 25

supported on most general-purpose and compute-optimized vms with two or more vCPUs.
If hyperthreading is supported then it needs four or more CPU

Question 26

what Windows based images support accelerated networking

Answer 26

Server 2019 datacenter
Server 2016 datacenter
Server 2012 R2 Datacenter

Question 27

What are common use cases for having multiple NIC

Answer 27

Network and Security function s
Network Isolation
Bandwidth Isolation

Question 28

What is the maximum length for usernames when connecting to a windows machine

Answer 28

20 characters

Question 29

What are the minimum and maximum lengths that a password can be in Windows-Based Azure virtual machines

Answer 29

12 -123

Question 30

What are the authentication options for Linux-based virtual machines

Answer 30

You can specify an existing SSH public key or a password when creating a Linux VM, Linux usernames must be between 1 and 32 characters in length

Question 31

What happens when you redeploy a VM

Answer 31

It moves the VM to a new host within Azure

Question 32

What is the cmdlet to redeploy a VM using powershell

Answer 32

Set-AzVM

Question 33

What is the command to redeploy Azure resources using Azure CLI

Answer 33

AZ vm redeploy