112 lines
4.0 KiB
Markdown
112 lines
4.0 KiB
Markdown
# Week 1 Practice Quiz: Hardware, Software & Operating Systems
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## Q1: What CPU Stands For
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What does CPU stand for?
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A. Central Processing Unit
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B. Computer Personal Utility
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C. Central Program Updater
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D. Computer Power Unit
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**Answer:** A
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**Explanation:** CPU stands for Central Processing Unit — it's the "brain" of the computer that executes instructions and processes data.
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## Q2: RAM vs Storage
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What happens to the data stored in RAM when you shut down your computer?
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A. It gets saved to the hard drive automatically
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B. It is erased — RAM is volatile memory
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C. It stays in RAM until you delete it manually
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D. It gets compressed and archived
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**Answer:** B
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**Explanation:** RAM (Random Access Memory) is volatile, meaning it only holds data while the computer is powered on. When you shut down, everything in RAM is lost.
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## Q3: Input Device Identification
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Which of the following is an input device?
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A. Monitor
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B. Printer
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C. Keyboard
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D. Speakers
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**Answer:** C
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**Explanation:** A keyboard sends data into the computer, making it an input device. Monitors, printers, and speakers are output devices — they receive data from the computer.
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## Q4: Storage Comparison
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Carlos needs to transfer a 2 GB presentation file to a classmate who doesn't have internet access. Which device would work best?
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A. A stick of RAM
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B. A USB flash drive
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C. An HDMI cable
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D. A CPU
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**Answer:** B
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**Explanation:** A USB flash drive is portable storage that can hold files and be physically handed to someone. RAM is volatile memory, HDMI transfers video signals, and a CPU processes data — none of these transfer files.
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## Q5: Operating System Purpose
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What is the main purpose of an operating system?
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A. To create documents and spreadsheets
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B. To manage hardware and software resources on a computer
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C. To connect the computer to the internet
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D. To protect the computer from viruses
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**Answer:** B
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**Explanation:** An operating system (like Windows, macOS, or Linux) manages hardware resources, runs applications, handles file storage, and acts as the intermediary between you and the computer's hardware.
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## Q6: File Extensions
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Priya downloaded a file called "report.pdf" from her email. What does the .pdf extension tell her?
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A. The file is a photo
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B. The file is a spreadsheet
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C. The file is a Portable Document Format file, typically for viewing and printing
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D. The file is an executable program
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**Answer:** C
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**Explanation:** The .pdf extension indicates a Portable Document Format file, which is designed for sharing documents that look the same on any device. File extensions tell your computer (and you) what type of file it is.
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## Q7: Binary Basics
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In computing, what is a "bit"?
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A. A single binary digit — either 0 or 1
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B. A group of 8 bytes
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C. A measure of internet speed
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D. A type of computer virus
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**Answer:** A
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**Explanation:** A bit (binary digit) is the smallest unit of data in computing, representing either a 0 or a 1. Eight bits make up one byte.
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## Q8: HDD vs SSD
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Which type of storage has no moving parts and is generally faster?
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A. HDD (Hard Disk Drive)
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B. SSD (Solid State Drive)
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C. Optical disc (CD/DVD)
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D. Floppy disk
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**Answer:** B
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**Explanation:** SSDs use flash memory with no moving parts, making them faster, quieter, and more durable than HDDs, which use spinning magnetic platters to read and write data.
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## Q9: System vs Application Software
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Which of the following is an example of system software?
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A. Microsoft Word
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B. Google Chrome
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C. Windows 11
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D. Adobe Photoshop
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**Answer:** C
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**Explanation:** System software includes operating systems like Windows 11 that manage hardware and run other programs. Word, Chrome, and Photoshop are all application software — programs you use to do specific tasks.
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## Q10: Data Size Units
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Put these storage units in order from smallest to largest: GB, KB, TB, MB.
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A. KB, MB, GB, TB
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B. MB, KB, GB, TB
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C. KB, GB, MB, TB
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D. TB, GB, MB, KB
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**Answer:** A
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**Explanation:** The order from smallest to largest is: Kilobyte (KB) → Megabyte (MB) → Gigabyte (GB) → Terabyte (TB). Each step up is roughly 1,000 times larger than the previous.
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