Introduction to Microsoft Azure Fundamentals

Question 1

What are the 3 knowledge domains for AZ-900?

Answer 1

1. Describe cloud concepts (25 - 30%)
2. Describe Azure architecture and services (35-40%)
3. Describe Azure management and governance (30-35%)

Question 2

cloud computing

Answer 2

The delivery of computing services over the Internet

Question 3

Computing services

Answer 3

virtual machines, storage, databases, networking, IoT, AI, machine learning (ML). The infrastructure is in the cloud provider datacenter

Question 4

compute power

Answer 4

How much processing a computer can do. Cloud computing allows you to add and remove computer power

Question 5

The shared responsibility model.

Answer 5

IT maintenance responsibilities are shared between the provider and the customer. The provider will take care of physical security, power, cooling, and network connectivity. The customer will take care of the data and information stored in the cloud. Responsibility can depend on the situation.

Question 6

on-premises datacenter

Answer 6

The customer is responsible for everything.

Question 7

IaaS Infrastructure as a service

Answer 7

• places the most responsibility on the consumer
• the cloud provider is responsible for the basic physical security, cooling, and power

Question 8

SaaS Software as a Service

Answer 8

• most of the responsibility is on the cloud provider

Question 9

PaaS Platform as as Service

Answer 9

• middle ground
• evenly distributes responsibility between the cloud provider and the consumer

Question 10

Responsibilities always retained by the customer.

Answer 10

1. the information and data stored in the cloud
2. Devices that are allowed to connect to your cloud (cell phones, computers, etc)
3. The accounts and identities of the people, services and devices within your organization

Question 11

Responsibilities always retained by the cloud provider.

Answer 11

1. the physical datacenter
2. the physical network
3. the physical hosts

Question 12

The service model determines the responsibility for the following:

Answer 12

1. Operating systems
2. Network controls
3. Applications
4. Identity and infrastructure

Question 13

Cloud models

Answer 13

the cloud models define the deployment and cloud resources

Question 14

What are the three main cloud models

Answer 14

1. Private
2. Public
3. Hybrid

Question 15

private cloud

Answer 15

• a cloud that is used by a single entity (IT services over the internet)
• provides much greater control for the company and its IT department
• comes with a greater cost and fewer of the benefits of a public cloud deployment
  may be hosted from onsite datacenter

Question 16

public cloud

Answer 16

• a cloud that is built, controlled, and maintained by a third party provider
• anyone that wants to purchase cloud services can access and use resources

Question 17

hybrid cloud

Answer 17

• a computing environment that uses both public and private clouds in an inter-connected environment
• organization controls security, compliance, or legal requirements

Question 18

multi-cloud

Answer 18

• the use of multiple public cloud providers and mange resources and security in both environments

Question 19

Azure arc

Answer 19

a set of technologies that helps manage your cloud environment
- it can even mange other cloud providers

Question 20

Azure VMware solution

Answer 20

• if you already established with VMware in a private cloud but want to migrate to a public or hybrid cloud then Azure VMware solution lets you run your VMware workloads in Azure

Question 21

What are the 2 types of expenses to consider when comparing IT infrastructure models?

Answer 21

1. Capital expenditure (CapEx)
2. Operational expenditure (OpEx)

Question 22

Capital Expenditure (CapEx)

Answer 22

a one-time, up-front expenditure to purchase or secure tangible resources (new building, company vehicle, repaving the parking lot)

Question 23

Operating Expenditure (OpEx)

Answer 23

spending money on services or products over time (renting a convention center, signing up for cloud services)

Question 24

Is cloud computing CapEx or OpEx?

Answer 24

OpEx, because it falls under a consumption based model.

Question 25

consumption-based model

Answer 25

- pay as you go, you pay for the IT resources you use - no upfront costs - no need to purchase and manage costly infrastructure the ability to pay for more resources - the ability to stop paying for resources that are no longer needed

Question 26

Application Inisghts

Answer 26

A service offered by Azure that integrates with your application to give you detailed information about the performance and reliability of your application

Question 27

High availability and scalability

Answer 27

- the availability of data and applications - the ability to grow data and applications

Question 28

Reasons to lose availability

Answer 28

- a network outage - an application failure - a system outage - a power outage - a problem with a reliant system, such as an external database

Question 29

Service - Level Agreement (SLA)

Answer 29

an agreement that guarantees a certain level of availability as a percentage - uptime of close to 100% - only applies to systems controlled by the cloud provider

Question 30

scaling

Answer 30

the process of adding additional resources or additional power for your application

Question 31

scaling out

Answer 31

horizontal scaling

Question 32

scaling up

Answer 32

vertical scaling, you can gain more features as well as CPU power

Question 33

scaling down, scaling in

Answer 33

reduction of resources when they are no longer needed

Question 34

elasticity

Answer 34

the ease of scaling in both directions the concept of automatically scaling

Question 35

Auto-Scale

Answer 35

an Azure service than can automatically scale applications running in many Azure services based on usage patterns, resource utilization, time of day, and much more

Question 36

Cloud agility

Answer 36

The speed in which Azure can reallocate resources

Question 37

fault tolerant

Answer 37

- the ability to move from an unhealthy system to a healthy system - designed to deal with failure on a small scale

Question 38

Business Continuity and Disaster Recovery (BCDR)

Answer 38

- disaster recovery plan - replicate an application's resources in an unaffected region to keep data safe

Question 39

3 Categories of cloud

Answer 39

1. Infrastructure-as-a-Service (IaaS) 2. Platform-as-a-Service (PaaS) 3. Software-as-a Service (SaaS)

Question 40

Infrastructure-as-a-Service IaaS

Answer 40

the virtualized infrastructure offered by a cloud provider, VM (you provide the OS and are responsible for patching)

Question 41

Azure Security Center

Answer 41

ensures the security of IaaS VMs

Question 42

Azure Backup

Answer 42

easily backups data

Question 43

Azure Log Analytics

Answer 43

troubleshoot any problems, logging

Question 44

IaaS Cost

Answer 44

- only pay for them when they are allocated to you - increase and reduce resources as needed

Question 45

Platform-as-a Service (PaaS)

Answer 45

The cloud provider provides the infrastructure, the operating system, software installed in the OS to help connect to databases and network systems (middleware), and features that enable you to build and manage complex cloud applications - minimize your management investment

Question 46

PaaS and VMs

Answer 46

a user has limited visibility into those VMs, they are managed entirely by the provider

Question 47

Azure App Service

Answer 47

a PaaS offering in Azure

Question 48

Docker

Answer 48

a technology that makes it easy to package your application and the components that it requires into an image that you can deploy and run on another computer as long as it has Docker installed on it - automatically installed on all App Service VMs as a part of MS PaaS and completed maintained by MS

Question 49

Other PaaS Offerings

Answer 49

CDN, Cosmos DB, SQL Database, Database for MySQL, Storage, Synapse Analytics

Question 50

lift-and-shift

Answer 50

moving you application from on-premises to a cloud environment by deploying it to the cloud