Part 1

Question 1

What is cloud computing?

Answer 1

Delivery model for services like storage/apps/compute power/networking/analytics through the internet

Question 2

Scalability

Answer 2

Scale up and down based on demand
- Vertical Scaling (up and down)
- Horizontal Scaling

Question 3

Vertical Scaling

Answer 3

Increase the size like memory of a machine up or down

Question 4

Horizontal Scaling

Answer 4

Increase the amount of machines of a machine

Question 5

Elasticity

Answer 5

Able to allocate/deallocate based on demand

Question 6

Automatic Scaling

Answer 6

When the machine does the allocation/deallocation automatically

Question 7

Agility

Answer 7

Ability to react quickly based on user’s request
- if they ask for a VM, should be done in a matter or seconds to mins

Question 8

Fault Tolerance

Answer 8

Ability to maintain up and running based on different failures
- If a storage disk is destroyed, no worries! We have it saved in 3 other disks

Question 9

Disaster Recovery

Answer 9

Set up at least 2 copies in different regions, done through replication

Question 10

High Availability

Answer 10

Uptime/(uptime + downtime)

• Ability to keep services running for extended periods of time with very little downtime

Question 11

Scaling in

Answer 11

refers to deallocating resources

Question 12

Scaling out

Answer 12

refers to allocating resources

Question 13

Economics of Scale

Answer 13

More customers, lower prices

Question 14

CapEx vs OpEx

Answer 14

CapEx = up front cost to buy everything
OpEx = cost to run everything

Question 15

Consumption Based Model

Answer 15

Only pay for what you use

Question 16

SaaS

Answer 16

Data/Apps
- You own nothing, just using the service like PowerPoint

Question 17

PaaS

Answer 17

Dockers, OS, middleware/software, AI, SQl, Logic Apps, Function Apps

• Building applications

Question 18

IaaS

Answer 18

Storage, servers, networking, VMs

Question 19

Resource Group

Answer 19

Container for multiple resources that are related

Question 20

How to manage resource groups?

Answer 20

1. Types
2. Lifecycle (app, envrioment)
3. Department
4. Region/location in the world

Question 21

Resource

Answer 21

Used to manage services in Azure

Question 22

What are compute services?

Answer 22

Category of on-demand services used to run cloud based applications

Question 23

Virtualizaiton

Answer 23

Amazon has their data centers with machine racks/PCs. One PC is split into multiple VMs with their own boundaries

• Emulation of physical machines

Question 24

How to create a VM in Azure?

Answer 24

Azure Virtual Machine Services
- UBUNTU/Windows/Orcale or other image
- IaaS

Question 25

RDC

Answer 25

Remote Desktop Connection

Question 26

How to scale VMs in the cloud?

Answer 26

VM Scale Set

Question 27

Containers vs VMs

Answer 27

Containers instead of Virtualization software uses container runtime - Container uses the OS of the system - Containers used for web app - Containers are faster than VMs - Containers best used for small faster apps

Question 28

Containers

Answer 28

- No OS, it uses the default OS that its based on - Light weight - Faster than VMs - Host an APP

Question 29

How to run containers?

Answer 29

ACI (Azure Container Instance)

Question 30

ACI

Answer 30

Azure Container Instance - Grabs the app/configurations and makes an image that the ACI will launch to the user - PaaS - Designed for small and simple web applications - no autoscaling, no servers

Question 31

AKS

Answer 31

Azure Kubernetse Service - PaaS - Open-source (used in AWS/Google etc...) - Highly scalable and customaizable to deploy containers at high scale

Question 32

App Services

Answer 32

Used to make app services - send the image to the web that users can access - PaaS - less control over configuration but good for high scale/ease

Question 33

Azure Functions (funtion apps)

Answer 33

Runs small funcitons of code as a web service - very similar to app services - PaaS - serverless - consumtion based or dedicated plan

Question 34

Purpose of a VM?

Answer 34

- IaaS - Custom software, custom requirements, very specialized, high degree of control

Question 35

Purpose of VM Scale Set

Answer 35

- IaaS - Auto-scaled workloads for VMs

Question 36

Purpose of Container Instances

Answer 36

- PaaS - Simple container hosting, easy to start

Question 37

Purpose of Kubernetes Service

Answer 37

- PaaS - Highly scalable and customiazeable container hosting platform

Question 38

Purpose of App Services

Answer 38

- PaaS - web applications, a lot of enterprise web hosting features - easy to start