Cloud Concepts - 20-25%

Question 1

What is Cloud computing?

Answer 1

Cloud Computing is the delivery of computing services over the internet, enabling (1)faster innovation, (2)flexible resources, and (3)economies of scale.

Question 2

What does Cloud computing involve and its examples?

Answer 2

COMPUTE POWER- such as Linux servers or Web Applications
NETWORKING- such as secure connections between the cloud provider and organization
STORAGE-such as files and databases
ANALYTICS.-such as visualizing telemetry and performance data.

Question 3

Who owns the public cloud?

Answer 3

Owned by cloud services OR hosting providers.

Question 4

What is the usage of the public cloud? How do you access it?

Answer 4

It provides resources and services to multiple organizations and users. Accessed via secure network connection (usually internet)

Question 5

Who owns the private cloud?

Answer 5

Organizations create a cloud environment in their data center.

Question 6

What are organizations responsible for in the private cloud?

Answer 6

The organization is responsible for operating the services they provide

Question 7

Do organizations provide access to users outside the organization under private cloud?

Answer 7

No.

Question 8

What is the hybrid cloud?

Answer 8

Combines Public and Private clouds to allow applications to run in the most appropriate location.

Question 9

What is the difference between the three cloud models?

Answer 9

Public-

1. No capital expenditures to scale up.
2. Applications can be quickly provisioned and de-provisioned.
3. Organizations pay only for what they use.

Private-

1. Hardware must be purchased for start-up and maintenance.
2. Organizations have complete control over resources and security.
3. Organizations are responsible for hardware maintenance and updates.

Hybrid-

1. Provides the most flexibility.
2. Organizations determine where to run their applications.
3. Organizations control security, compliance, or legal requirements.

Question 10

Knowledge check-
Which cloud service type requires the customer to manage the underlying hypervisor platform for their cloud deployments?

a) Infrastructure-as-a-Service b) Platform-as-a-Service
c) Software-as-a-Service
d) None of the above

Answer 10

d) None of the above

Question 11

Knowledge Check-
Which cloud service types would best match the following situation?

Several web applications have been developed internally in your organization. The web applications allow users to enter details in a form and those details are then emailed to a shared mailbox. The form is accessible from the internet and can be accessed anonymously.

Answer 11

PaaS (Platform-as-a-Service)
Because the web applications are publicly accessible and do not require authentication, a PaaS service that allows customers to host web sites without having to manage servers would be best.
The websites can be deployed quickly and will have publicly accessible endpoints with minimal configuration.
Emails could be sent using a SaaS solution as well.

Question 12

What are the 10 features of the cloud?

Answer 12

1 High availability
2 Agility
3 Customer latency capabilities 
4 Global reach
5 Security
6 Scalability
7 Disaster recovery
8 Predictive cost considerations
9 Elasticity
10 Fault tolerance

Question 13

What is the difference between CapEx vs OpEx?

Answer 13

CapEx- The up-front spending of money on physical infrastructure.
Costs from CapEx have a value that reduces over time.

OpEx- Spend on products and services as needed, pay-as-you-go
Get billed immediately

Question 14

What is the consumption-based model? what are its features?

Answer 14

Cloud service providers operate on a consumption-based model, which means that end-users only pay for the resources that they use. Whatever they use is what they pay for.
• Better cost prediction
• Prices for individual resources and services are provided
• Billing is based on actual usage

Question 15

Cloud Models - Objective Domain

Answer 15

• Define cloud computing
• Describe Public cloud
• Describe Private cloud
• Describe Hybrid cloud
• Compare and contrast the three different cloud models

Question 16

Cloud Benefits - Objective Domain

Answer 16

• Identify the benefits of cloud computing such as High Availability, Scalability, Elasticity, Agility, and Disaster Recovery.
• Identify the differences between Capital Expenditure (CapEx) and Operational Expenditure (OpEx).
• Describe the consumption-based model.

Question 17

Cloud Services - Objective Domain

Answer 17

• Describe Infrastructure-as-a-Service (IaaS)
• Describe Platform-as-a-Service (PaaS)
• Describe Software-as-a-Service (SaaS)
• Identify a service type based on a use case
• Describe the shared responsibility model
• Describe serverless computing

Question 18

What is an Infrastructure as a Service (IaaS)?

Answer 18

Build pay-as-you-go IT infrastructure by renting servers, virtual machines, storage, networks, and operating systems from a cloud provider.

Most basic cloud computing services category

Question 19

What is a Platform as a Service (PaaS)?

Answer 19

Provides an environment for building, testing, and deploying software applications; without focusing on managing the underlying infrastructure.

Helps build applications quickly, without focusing on managing the underlying infrastructure.

Question 20

What is a Software as a Service (SaaS)?

Answer 20

Users connect to and use cloud-based apps over the internet: for example, Microsoft Office 365, email, and calendars.

Question 21

Cloud service comparison?

Answer 21

1. IaaS-
   The most flexible cloud service.
   You configure and manage the hardware for your application.
2. PaaS-Focus on application development.
   Platform management is handled by the cloud provider.
3. SaaS- Pay-as-you-go pricing model.
   Users pay for the software they use on a subscription model.

Question 22

What is the shared responsibility model?

Answer 22

On-Premises (Private Cloud)-
You manage-

Data & Access 
Applications
Runtime
Operating System
Virtual Machine 
Compute 
Networking 
Storage

IaaS-

You manage-

Data & Access 
Applications
Runtime
Operating System
Virtual Machine 

Cloud Provider manages-
Compute
Networking
Storage

PaaS-
You Manage-
Data & Access
Applications

Cloud Provider manages-
Runtime
Operating System
Virtual Machine 
Compute 
Networking 
Storage 

SaaS-

You Manage-
Data & Access

Cloud Provider manages-
Applications
Runtime
Operating System
Virtual Machine 
Compute 
Networking 
Storage

Question 23

What is a serverless computing application? What are the applications?

Answer 23

Serverless computing enables developers to build applications faster by eliminating the need for them to manage infrastructure
With serverless computing applications, the cloud service provider automatically provisions, scales, and manages the infrastructure required to run the code.

Azure Functions is code running your service and not the underlying platform or infrastructure. It creates infrastructure based on an event.

Azure Logic Apps is a cloud service that helps you automate and orchestrate tasks, business processes, and workflows when you need to integrate apps, data, systems, and services.

Question 24

Knowledge Check-
Which cloud deployment model would be best for the following scenario?

A server is needed to process data for a short-term project. The organization does not have hardware that meets the performance requirements or any available staff to deploy it. The project starts in a few days and the server is not needed when the project is completed.

Answer 24

Public Cloud

Because the server is only needed for a short time, public cloud would be the best option.
Creating a server in the public cloud will be cost-effective with pay per-usage billing and the resource can be removed when the project is complete.

A PaaS database could also be a candidate, eliminating the need for a server.

Question 25

Knowledge Check-
The capability of a system to be enlarged to accommodate a growing amount of work is best described by the term
a) Reliability b) Elasticity c) Scalability d) Agility

Answer 25

c) Scalability

Question 26

Knowledge Check-

In general terms, when an organization moves to the cloud will it see a reduction in CapEx, OpEx, or both?

Answer 26

Both.
Quite often, an immediate reduction in CapEx is realized by moving to the cloud. This can be through the immediate reduction in on-premises components by eliminating or migrating workloads.
Organizations can also see a reduction in OpEx through the reduced time and hours spent on IT maintenance. Organizations that move to the cloud see a significant reduction in IT management tasks as responsibilities shift to the cloud provider.

Question 27

Objective 1 Review

Answer 27

• Microsoft offers Public, Private, and Hybrid cloud models so you can build based on your needs.
• From high availability to elasticity to disaster recovery to pay-as-use the benefits of the Azure cloud are numerous.
• IaaS, PaaS, SaaS, and serverless, or a combination.
• Shared responsibility.

Question 28

Difference between cloud services and hosting providers?

Answer 28

With hosting providers, you are simply renting space of server. more security, less services. with cloud services, you are getting server space, application management, resources, etc. less security, more accessibility, more services, cheaper.