Cloud Computing Introduction

Question 1

What is cloud computing?

Answer 1

Cloud computing is the on-demand delivery of compute power, database storage, applications, and other IT resources.

Question 2

What are the different deployment types of clouds? (x3)

Answer 2

• Private Cloud. Cloud services used by a single organization and is not exposed to the public. This gives you full control and security for sensitive applications.
• Public Cloud. Cloud resources owned and operated by a third-party cloud service provider delivered over the internet.
• Hybrid Cloud. Keep some servers on premises and extended some capabilities to the Cloud.

Question 3

List the characteristics of Cloud Computing (x5)

Answer 3

• On-demand self-service, users can provision resources and use them without human interaction from the service provider
• Broad network access, resources available over the network and can be accessed by diverse client platforms.
• Multi-tenancy and resource pooling
• Rapid elasticity and scalability, automatically and quickly acquire and dispose resources when needed.
• Measured services, usage is measured and users pay only for what they use

Question 4

What are the advantages of Cloud Computing? (x6)

Answer 4

• Trade capital expense (CAPEX) for operational expense (OPEX)
• Benefit from massive economies of scale
• Stop guessing capacity
• Increase speed and agility
• Stop spending money running and maintaining data centres
• Go global in minutes

Question 5

What problems are solved using Cloud Computing? (x6)

Answer 5

• Flexibility, you can change resource types when needed
• Cost-Effectiveness, pay as you go for what you use
• Scalability, accommodate larger loads by making hardware stronger or adding additional nodes
• Elasticity, ability to scale out and scale-in when needed
• High availability and fault-tolerance
• Agility, rapidly develop, test and launch software applications

Question 6

List the types of Cloud computing (x3)

Answer 6

• Infrastructure as a Service (IaaS)
• Platform as a Service (PaaS)
• Software as a Service (SaaS)

Question 7

What is Infrastructure as a Service?

Answer 7

• Provides building blocks for cloud it. this includes networking, computers and data storage space.
• Highest level of flexibility
• Easy parallel with traditional on-premises IT

Question 8

What is Platform as a Service?

Answer 8

PaaS removes the need for your organization to manage the underlying infrastructure and allows the organisation to focus on the deployment and management of your application.

Question 9

What is Software as a Service?

Answer 9

A completed product that is run and managed by the service provider.