IC3 IC3 Computing Fundamentals and Key Applications 2 — Questions and Answers
Question 1: Which operating system is developed and maintained by Apple Inc. for its Mac computers?
- Windows
- Linux
- macOS (Correct answer)
- Android
Correct answer: macOS
macOS is Apple's proprietary operating system designed exclusively for Mac desktop and laptop computers.
macOS (formerly Mac OS X) is the operating system developed by Apple Inc. for its Mac line of computers. It is known for its intuitive interface, tight integration with other Apple devices and services (like iPhone via Handoff and iCloud), and robust security features. Windows is developed by Microsoft, Linux is open-source, and Android is Google's mobile OS. macOS uses the Finder as its file manager and the App Store for software distribution.
Question 2: In file management, what does a file extension indicate?
- The size of the file in kilobytes
- The location where the file is saved on the hard drive
- The type or format of the file (Correct answer)
- The date the file was created
Correct answer: The type or format of the file
A file extension (like .docx, .jpg, or .pdf) indicates the file's format and which application can open it.
A file extension is the suffix at the end of a filename, separated by a period. It tells the operating system (and users) what type of data the file contains and which program should open it. For example: .docx = Microsoft Word document, .xlsx = Excel spreadsheet, .jpg = JPEG image, .pdf = PDF document, .mp3 = audio file. The OS uses file associations to automatically open files with the correct application based on their extension.
Question 3: What is the purpose of a file folder (directory) in a computer's file system?
- To compress files to save disk space
- To organize and group related files together (Correct answer)
- To encrypt sensitive documents
- To back up files to an external drive
Correct answer: To organize and group related files together
Folders (directories) are used to organize files into logical groups, making it easier to locate and manage them.
A folder (also called a directory) is a container in a file system used to organize files and other folders into a hierarchical structure. This makes it easier to navigate, locate, and manage large numbers of files. For example, you might have a 'Documents' folder containing subfolders for 'School,' 'Work,' and 'Personal.' The hierarchical structure of folders creates a tree-like file system that operating systems like Windows and macOS use to organize all stored data.
Question 4: Which of the following is an example of system software?
- Microsoft Word
- Google Chrome
- Windows 11 (Correct answer)
- Adobe Photoshop
Correct answer: Windows 11
Windows 11 is system software (an operating system) that manages hardware and provides a platform for other programs to run.
Software is divided into two main categories: system software and application software. System software includes the operating system (Windows, macOS, Linux) and utility programs that manage and support the computer's operation. Application software includes programs users run to accomplish specific tasks — like Microsoft Word for word processing, Google Chrome for web browsing, and Adobe Photoshop for image editing. Windows 11 is system software because it controls hardware and provides the environment for applications to run.
Question 5: What happens when you install software on a computer?
- The software is stored in RAM permanently
- Program files are copied to the computer's storage and configured to run (Correct answer)
- The CPU is upgraded to support the new program
- The operating system is replaced with the new software
Correct answer: Program files are copied to the computer's storage and configured to run
Installing software copies program files to the hard drive and configures the OS to recognize and run the application.
When you install software, the installation program copies the application's files to your computer's permanent storage (HDD or SSD), creates necessary configuration files, registers the program with the operating system, and often places shortcuts on the desktop or Start menu. The software is then available every time you start the computer. This is different from running a program from a web browser (web apps), which don't require local installation.
Question 6: What is the primary function of a network router in a home or office?
- To print documents wirelessly
- To direct internet traffic between devices and the internet service provider (Correct answer)
- To increase the speed of the computer's CPU
- To store backup copies of files
Correct answer: To direct internet traffic between devices and the internet service provider
A router directs (routes) data packets between local devices and the internet, enabling multiple devices to share one internet connection.
A router is a networking device that forwards data packets between computer networks. In a home or office, it connects local devices (computers, phones, tablets) to the internet via an Internet Service Provider (ISP). The router assigns IP addresses to local devices (via DHCP) and directs incoming and outgoing traffic appropriately. Modern routers often include built-in Wi-Fi access points, allowing wireless connections. Without a router, individual devices cannot share a single internet connection.
Question 7: Which of the following best describes a mobile device?
- A desktop computer with a large monitor
- A portable computing device such as a smartphone or tablet (Correct answer)
- A server that stores website data
- A type of printer that connects wirelessly
Correct answer: A portable computing device such as a smartphone or tablet
Mobile devices are portable computing devices — primarily smartphones and tablets — designed for use on the go.
Mobile devices are handheld or portable computing devices designed for portability and on-the-go use. They typically feature touchscreens, rechargeable batteries, built-in wireless connectivity (Wi-Fi, cellular, Bluetooth), and mobile operating systems like iOS (Apple) or Android (Google). Common examples include smartphones, tablets, and e-readers. Mobile devices differ from traditional computers in their smaller form factor, touch-based input, and app-centric software model through stores like the Apple App Store or Google Play Store.
IC3 IC3 Computing Fundamentals and Key Applications 2
Which operating system is developed and maintained by Apple Inc. for its Mac computers?