Software & Operating Systems

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Types of software: system, application, utility

⏱ 4 min read🧩 5 question types🎯 13 practice Q

The idea in one minute

Every program is one of three kinds. System software runs the machine. Utility software keeps the machine clean and safe. Application software does the user's own work. Software is also grouped by licence: freeware, shareware, open source and proprietary.

The three classes of software

Ask one question about any program: who does it serve?

Class	Serves	Examples
System software	The machine itself	Operating systems (Windows, Linux, macOS, Android), device drivers, firmware/BIOS, language translators (compiler, interpreter, assembler)
Utility software	Maintenance of the machine	Antivirus, disk defragmenter, disk cleanup, backup tools, file compressors, file manager, screen saver
Application software	The user's task	MS Word, Excel, PowerPoint, Chrome, Photoshop, games, WhatsApp, Tally

Tip: Use the SUApp test. Does it Serve the machine (system), Unclog it (utility), or do the user's App work (application)?

Two boundary cases

Exams love the programs that sit near the border.

A device driver is system software. You install it like an app. But it only teaches the OS to talk to one piece of hardware, such as a printer.
A utility keeps the machine healthy. It does not make user documents. An application makes the user's output.

Watch: Firmware is software burned into a hardware chip, such as the BIOS chip. It is system software too.

Utility software

A utility is a small maintenance tool. Learn each job.

Utility	Job
Antivirus	Finds and removes malware
Disk Defragmenter	Joins scattered pieces of files on a hard disk so reading is faster
Disk Cleanup	Deletes temporary and junk files to free space
Backup utility	Keeps a second copy of important data
Compression tool (WinZip, 7-Zip, WinRAR)	Shrinks files into smaller archives and opens them
File manager	Copies, moves, renames and organises files

Two kinds of application software

General purpose: made for many users and many jobs. Examples: MS Office, browsers, media players.
Application-specific (custom): made for one job. Examples: a payroll system, a railway reservation system.

Licence types

A licence says how you may use a program. These four are one-mark favourites.

Type	Meaning	Example
Freeware	Free of cost, but the source code stays closed	Adobe Reader
Shareware	Free trial first, then you pay	WinZip
Open source	Source code is available	Linux, LibreOffice, Firefox
Proprietary	Paid licence, closed source	MS Office

Rule: Free of cost is not the same as open source. Freeware is free, but nobody can see its code.

Tip: Freeware = Free forever. Shareware = Sample first. Open source = Open code. Proprietary = Pay.

Question types you will see

Each type: how to recognise it, the method step by step, and one question to try.

Type 1very common3 practice Q

System, application or utility

How to spot it:

A program is named (Word, antivirus, driver, Windows) and its class is asked. Or a list asks for the odd one out.

Method

Ask who the program serves.
The machine itself means system software.
Cleaning or protecting the machine means utility.
The user's own task means application.

Why it works:

Drivers, BIOS and translators are system software, even though they look like apps.

Try this

Which of these is application software? (A) Windows (B) Antivirus (C) MS Word (D) Device driver

Show solution

Windows is an OS: system.
Antivirus is a utility.
A driver serves hardware: system.
MS Word does the user's document work.

Answer

Type 2common4 practice Q

Utility and its job

How to spot it:

A job is described (removes junk files, joins scattered file pieces, makes a second copy) and the tool is asked.

Method

Read the job in the question.
Match it to the utility table.
Pick the utility whose job matches word for word.

Why it works:

Each utility has one fixed job, so the job words give the answer.

Try this

Which utility deletes temporary and junk files to free disk space?

Show solution

Freeing space by deleting junk is cleanup.
Defragmenter only rejoins file pieces.

Answer

Disk Cleanup

Type 3very common2 practice Q

Licence classification

How to spot it:

A program is described as free, trial, source code available or paid. The licence type is asked.

Method

Check the cost first: free, trial or paid.
Then check the source code: open or closed.
Free and closed is freeware. Free and open is open source.

Why it works:

Two facts, cost and source code, separate all four licence types.

Try this

A program is free to use, but its source code is not available. It is called

Show solution

It costs nothing.
Its source code is closed.

Answer

Freeware

Type 4common2 practice Q

Examples of each type

How to spot it:

A list of program names is given and one class or licence is asked.

Method

Sort each name into system, utility or application.
Watch for drivers and firmware.
Pick the option that fits the asked class.

Why it works:

Knowing the standard examples makes the answer immediate.

Try this

Which one is NOT application software? (A) MS Excel (B) Firefox (C) Device driver (D) Tally

Show solution

Excel, Firefox and Tally serve the user.
A driver serves the hardware.

Answer

Type 5occasional

Firmware

How to spot it:

A question says software stored in a chip, or asks what the BIOS is.

Method

Look for software burned into hardware.
Match it to firmware.
Remember firmware is system software.

Why it works:

Firmware lives in the hardware chip and starts the machine.

Try this

Software that is burned into a hardware chip, such as the BIOS chip, is called

Show solution

It sits inside the hardware.
It is not installed by the user like an app.

Answer

Firmware

Shortcuts that save time

⚡ SUApp test

Ask who the program serves. The machine means system. Cleaning or protecting the machine means utility. The user's own job means application. Windows is system, antivirus is a utility, Excel is an application.

Example

Disk Defragmenter is which type of software?

Show solution

It does not run the machine.
It does not make user documents.
It keeps the disk healthy.

Answer

Utility software

⚡ Licence four-word key

Freeware is free forever but closed. Shareware is a sample first. Open source has open code. Proprietary means pay.

Example

Linux is which kind of software by licence?

Show solution

Its source code is available.
That is the mark of open source.

Answer

Open-source software

Mistakes to avoid

Where most students lose marks on this subtopic.

Mistake 01

Counting device drivers as application software.

Drivers serve the hardware, so they are system software.

Mistake 02

Calling an antivirus an operating system.

An antivirus maintains and protects the machine. It is a utility.

Mistake 03

Thinking freeware is open source.

Freeware costs nothing, but its source code stays closed.

Mistake 04

Thinking shareware is free forever.

Shareware is a free trial. You pay to keep using it.

Quick revision

Read this the night before the exam.

System = the machine: OS, drivers, BIOS/firmware, translators.
Utility = maintenance: antivirus, defragmenter, cleanup, backup, compression.
Application = the user's task: Word, Chrome, games, payroll.
Drivers and firmware are system software, not applications.
Freeware = free but closed source. Open source = code available (Linux, Firefox).
Shareware = try first, pay later. Proprietary = paid and closed (MS Office).

Practice: 13 questions

Sets of 10, mixed across the question types above. Every answer has a step-by-step explanation.

Topic test · 13 questions

Suggested time 5 min · wrong answers go to your mistake notebook automatically.

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