1. Describe Cloud Concepts

Question 1

Cloud computing

Answer 1

Delivery of computing services over the internet. (Ex. virtual machines, storage, databases and networking)

Question 2

Shared responsibility

Answer 2

Idea of customer and provider sharing responsibilities of computing services that would normally all be held by IT dptmt in on site datacenter

Question 3

Always customer responsibilities (3)

Answer 3

1. Information and data stored in the cloud
2. Devices that are allowed to connect to cloud
3. Accounts and identities of people, services, and devices in organization

Question 4

Always provider responsibilities (3)

Answer 4

1. Physical datacenter (security, cooling, power)
2. Physical network (connectivity)
3. Physical hosts

Question 5

Responsibilities that depend on the service (4)

Answer 5

1. operating systems
2. network controls
3. applications
4. identity and infrastructure

Question 6

Three main cloud models

Answer 6

Public, private, hybrid

Question 7

Public cloud

Answer 7

a cloud that is built, controlled, and maintained by a third-party cloud provider. anyone that wants to purchase cloud services can do so.

Question 8

Private cloud

Answer 8

A cloud that is used by a single entity.
Natural evolution from on site datacenter
Can be hosted from onsite datacenter, offsite datacenter, or by third party that has dedicated a whole datacenter to you

Question 9

Hybrid cloud

Answer 9

Using both private and public clouds.
Uses: if private cloud has surge in demand then public takes over to deal with it. Or public can provide layer of security for private

Question 10

Multi cloud

Answer 10

Using two or more public clouds

Question 11

Azure arc

Answer 11

Azure technology that helps to manage your clouds if you have many

Question 12

Capital expenditure

Answer 12

typically one time, up front, expense to out right buy something.
Ex. buying a building, building data center, buying company car

Question 13

Operational expenditure

Answer 13

spending money on services or products over time
Ex. renting a building, renting a car, using cloud services

Question 14

Consumption based pricing model

Answer 14

Pay for what you use (consume)

Question 15

Benefits of consumption based model (4)

Answer 15

1. no upfront costs
2. no need to purchase and manage costly infrastructure
3. ability to pay for more resources when they’re needed
4. ability to stop paying for resources that are no longer needed

Question 16

Pay as you go pricing model

Answer 16

pay only for the cloud services that you use

Question 17

Benefits of pay as you go model (3)

Answer 17

1. plan and manage operating costs
2. run infrastructure more efficiently
3. scale as your business needs changes

Question 18

Benefits of using cloud services (6)

Answer 18

1. high availability (uptime)
2. scalability (vertical and horizontal)
3. reliability
4. predictability (cost and performance)
5. security
6. governance

Question 19

High availability

Answer 19

Ensuring maximum availability (uptime), regardless of disruptions or events that may occur

Question 20

Scalability

Answer 20

Ability to adjust resources to meet demands. Vertical and horizontal

Question 21

Vertical scaling

Answer 21

Increasing or decreasing the power of the resources you have.
Ex. Adding more cpu, RAM to virtual machines

Question 22

Horizontal scaling

Answer 22

Increasing or decreasing the amount of resources.
Ex. Adding more virtual machines

Question 23

Uptime

Answer 23

The measure (%) of how often a resource will be available.
Ex. 99% uptime means it will be available 99% of the time

Question 24

Reliability

Answer 24

Ability of a system to recover from failures and continue to function

Question 25

Predictability

Answer 25

able to accurately predict what resources will be needed and how much they will cost

Question 26

Performance predictability

Answer 26

able to predict resources needed to deliver a positive experience to your customers. Autoscaling, load balancing, and high availability are some cloud concepts that support performance predictability

Question 27

Load balancing

Answer 27

If traffic is heavily focused on one area (datacenter or vm) load balancing will redirect some of the overload to less stressed areas

Question 28

Cost predictability

Answer 28

predicting or forecasting the cost of cloud services that will be needed

Question 29

Security

Answer 29

Choose things like IaaS that give you full control and allow you to implement any necessary security implementations. Cloud providers are usually good with things like distributed denial of service (DDoS)

Question 30

Governance

Answer 30

Provides things like templates to ensure all deployed resources meet corporate standards and government regulatory requirements. Can alert users if they are not adhering to governance requirements from government or organization

Question 31

Manageability

Answer 31

1. Management of the cloud 2. Management in the cloud

Question 32

Management of the cloud

Answer 32

Manage your cloud resources 1. automatically scale resource deployment based on need 2. deploy resources based on a preconfigured template so no need for manual configuration 3. monitor health of resource and automatically replace failing ones 4. Receive automatic alerts based on configured metrics so aware of performance in real time

Question 33

Management in the cloud

Answer 33

Manage cloud resources through: 1. web portal 2. command line interface 3. APIs 4. PowerShell

Question 34

IaaS

Answer 34

Infrastructure as a Service Essentially just renting hardware in cloud datacenter. Most responsibility on the user. - Provider responsible for maintaining the hardware, network connectivity, and physical security - Customer responsible for everything else

Question 35

Scenarios for IaaS

Answer 35

Lift-and-Shift migration: standing up cloud resources similar to on-prem datacenter and then moving things running on-premise onto the IaaS resources on the cloud Testing and development: if you have established configs for development and testing environments you can quickly set up and shut down resources with full control

Question 36

PaaS

Answer 36

Platform as a Service Middle ground between renting space in datacenter (IaaS) and paying for complete/deployed solution (SaaS). Splits responsibility between customer and cloud provider -Provider responsible for main 3(maintains physical infrastructure, physical security, and connection to the internet) + maintaining operating systems, middleware, development tools, business intelligence services, databases, and development tools

Question 37

Scenarios for PaaS

Answer 37

Development framework: PaaS provides framework for developers to customize or develop cloud-based applications where most of benefits of cloud computing already exist Analytics or business intelligence: Tools that allow organizations to analyze and mine their data to find insights and patterns in order to predict outcomes and improve forecasting

Question 38

SaaS

Answer 38

Software as a service

Question 39

Scenarios for SaaS

Answer 39

- Emails and messaging - business and productivity apps - finance and expense tracking