CS: Operating Systems: What They Do Worksheet

Question 1

In your own words, explain what an operating system is and name two examples of operating systems.

Accepted Answer

An operating system is the main software that helps a computer run programs and control hardware. Examples include Windows, macOS, Linux, Android, and iOS.

Question 2

A student opens a web browser, a music app, and a word processor at the same time. What job is the operating system doing to help this work?

Accepted Answer

The operating system is managing multiple programs so they can share the computer's processor, memory, and other resources without interfering with each other.

Question 3

Label the parts of this computer system from top to bottom: user, application, operating system, hardware. Then explain why the operating system is in the middle.

Accepted Answer

The correct order is user, application, operating system, and hardware. The operating system is in the middle because it lets applications communicate with hardware like the keyboard, screen, storage, and printer.

Question 4

Why does a computer need an operating system to run most applications?

Accepted Answer

A computer needs an operating system because applications depend on it to start, use memory, save files, display information, receive input, and access devices safely.

Question 5

A printer is connected to a laptop. When the student clicks Print, what role does the operating system play?

Accepted Answer

The operating system helps the application send the document to the printer, uses a printer driver, and manages the print job so the printer knows what to do.

Question 6

Look at the file tree. What is one job the operating system is doing in this situation?

Accepted Answer

The operating system is organizing files and folders so the user can find, open, move, rename, and save information in a structured way.

Question 7

A game needs more memory than a computer currently has available. What might the operating system do?

Accepted Answer

The operating system might close or pause background tasks, move some data to storage using virtual memory, or show an error if there is not enough memory to run the game well.

Question 8

Explain the difference between hardware and software. Include one example of each.

Accepted Answer

Hardware is the physical part of a computer, such as a keyboard, screen, processor, or hard drive. Software is a set of instructions, such as an operating system, web browser, or game.

Question 9

A computer is downloading a file, playing music, and checking for updates. How does the operating system decide what gets attention from the processor?

Accepted Answer

The operating system uses scheduling to give different tasks turns using the processor. It switches between tasks quickly so the computer seems to do many things at once.

Question 10

Why are user accounts important in an operating system?

Accepted Answer

User accounts are important because they keep each person's files, settings, and permissions separate. They also help protect private information and control what each user can change.

Question 11

A student tries to install an app on a school computer, but the computer asks for an administrator password. What operating system job does this show?

Accepted Answer

This shows that the operating system manages security and permissions. It prevents users from making changes that could harm the computer or break school rules.

Question 12

Look at the task manager style chart. Which program is using the most memory, and why might this information be useful?

Accepted Answer

The program with the tallest memory bar is using the most memory. This information is useful because a user can identify programs that may be slowing down the computer.

Question 13

What is a device driver, and why does an operating system use one?

Accepted Answer

A device driver is special software that helps the operating system communicate with a hardware device. The operating system uses drivers so devices such as printers, cameras, and keyboards can work correctly.

Question 14

A phone shows a notification that says, 'System update available.' Give two reasons why operating system updates are important.

Accepted Answer

Operating system updates are important because they can fix security problems, repair bugs, improve performance, and add support for new features or devices.

Question 15

Study the diagram of an operating system managing resources. Choose two resources shown and explain how the operating system helps manage them.

Accepted Answer

The operating system can manage the processor by scheduling tasks and manage storage by saving and organizing files. It can also manage memory, network access, input devices, and output devices.

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CS: Operating Systems: What They Do

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