Chapter 5, Problem 3RQ

Explanation of Solution

Computer software used in business:

• Application software is an end-user program, which enables the computer to perform some useful tasks.
  • Examples of application software are,
    • Media players
    • Accounting software
    • Database programs
    • Sprea...

Explanation of Solution

Differences between system software and application software:

System software	Application software
System software supports and manages computer system and interacts with other computer resources.	Software that is designed for end users is known as application software.
It is designed to operate computer hardware devices.	Application software cannot control hardware devices.
System software provides a platform for application software to run in its environment and it controls the whole machine.	It performs in an environment provided by system software...

Explanation of Solution

Role of Operating System (OS) in computer system:

• The most important program that runs on a computer is operating system.
• OS is a collection of software that enables the computer resources to have communication with computer system.
• OS is used to control traffic in a computer; it schedules time for processing and allocates memory for each process.
• Operating system acts as an interface between user and computer...

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Personal Computer (PC) and server operating systems:

• Windows7: It is developed by Microsoft and used as personal OS.
• Windows8: It is improved interface of Windows7 developed by Microsoft...

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Desktop productivity software tools:

• Word processing
  • The word processing file is a type of file which contains plain text information and it may also contain audio and video information.
  • Word processing file with plain text:
    • It contains only text and it stores the information typed by the user in the document.
    • The file contains not only the characters in the document.
    • Additionally, it contains the formatting styles, colors, borders, fonts, and images or clip art...

Explanation of Solution

Usage of java and html in web application:

Java belongs to the fifth generation software.

• The software that was developed approximately after the year 1990 is represented as the fifth generation software.
• Java is an object oriented programming language designed and developed after 1990.
  • Java is an easy, secure, and platform-independent language that can be run on any computer.
• Structured design is based on the task (functions).
  • It deals with the data and function separately.
• Object oriented design breaks the tasks into objects, and it is based on the object.
  • It groups the data and functions together as objects which the real world object...

Explanation of Solution

Web services:

• Web service is a generic or specific service offered to an electronic device by another electronic device.
• It includes efficient and effective security.
• Lost coupling can be replaced using the required code.
• Any random client can use the services by having the knowledge of its functionality...

Explanation of Solution

Open source software:

• The basic codes and applications which are free for everyone to see and use is known as open source software. The idea of open source revolutionized the computing world.
• The example of open source software is Linux operating system.
• Linux allows the user to view to source code and everyone can use it...

Explanation of Solution

Cloud computing services:

• Cloud computing is a type of computing that relies on computer resources sharing rather than the application running on local computing devices such as servers, computers, tablet, and Smart phones.
• In a cloud computing the cloud is used as a symbol for the internet, it means that the cloud computing is a type of internet based computing.
• There are three types of service categories available in cloud computing:
  • The hardware-based service is categorized as “Infrastructure-as-a-Service”.
  • The software-based service is categorized as “Software-as-a-Service”.
  • The application and interface development based service is categorized as “Platform-as-a-Service”...