Chapter 6.8, Problem 6.1ARQ

Explanation of Solution

Cloud:

The term cloud can be defined as the process that let the computer resources to be accessed anytime anywhere over the internet. The cloud can be represented as the elastic leasing of the various computer resources that are known as the pooled resources that can be accessed over the internet.

Explanation about the key terms:

In the definition for the cloud the key term that has been used are discussed as follows:

Elastic:

• The term elastic has been used in the definition meaning that the amount of resources can be increased or decreased in any point of time.
• The organization can use the computer resources and they can pay for their various resources that have been used for many organizational activities.
• In order to running any particular website then the organization can also able to buy some space in the cloud in order to maintain the organizational activities over the internet rapidly.

Pooled:

• In general, most of the cloud resources are pooled because the hardware components are similar for many organizations.
• Cloud resources are considered to be pooled since different organizations are sharing the same physical hardware resources using the virtualization.
• Virtualization allows the rapid making of new virtual machines and it will increase the accessibility of company’s system with reduced cost.

Over the internet:

• The cloud has been implemented in order to access the computing resources from anywhere and anytime over the internet.
• Hence using the internet connectivity the computer resources can be accessed and shared for any organizational activities over the internet.

Difference between mainframe, client server and cloud architectures:

Mainframe architecture	Client-server architecture	Cloud architecture
It supports connection between a central mainframe and many computer terminals. All information, applications and its processing control are placed on central mainframe.	User’s personal computer gets connected to the Internet and buying servers to host their website pages and data. It allows a client to send request to servers across the Internet. Server service the request by sending data back to the client. In this architecture, all applications and data storage are resided on both client and servers.	This architecture allows employee and customer to access company data and applications placed on cloud. All information, applications and its processing control are used remotely with many devices like PC, mobiles, thin clients and so on.

Difference between scalability and elasticity:

Scalability	Elasticity
It has an ability to respond to incremental growth in request...