Chapter 2.6: Cloud Computing

Question 1

What is cloud computing?

Answer 1

The use of distributed storage and processing on servers connected by the internet,

typically provided as software or data storage as a subscription service provided by other companies

Question 2

What does cloud computing enables?

Answer 2

It enables users to access and use the web applications that reside in vast data centres located around the world instead of on their own personal computers

Question 3

Why is it called cloud computing?

Answer 3

because most network diagrams denote the internet as a cloud

Question 4

Advantages of cloud computing?

Answer 4

massive on demand scalability

dynamically provisioned to achieve:

• economies of scale (cost per unit of output decreasing with increasing scale as fixed costs are spread over more units)
• saving businesses money
• billed like utilities

Question 5

What is the difference between cloud computing model and client/server models

Answer 5

software and the data reside on the servers in the cloud and not client machines

Question 6

Concerns of cloud computing

Answer 6

network disruption, data not available, security and privacy