DSST Introduction to Computing 3 — Questions and Answers
Question 1: What is a 'bit' in computing?
- A group of 8 bytes
- The smallest unit of data, either 0 or 1 (Correct answer)
- A type of processor instruction
- A network packet unit
Correct answer: The smallest unit of data, either 0 or 1
A bit is the most basic unit of digital data, representing a single binary value of 0 or 1.
Question 2: Which of the following best describes a LAN?
- A network connecting computers across countries
- A network covering a small geographic area like an office (Correct answer)
- A satellite-based communication system
- A wide-area wireless protocol
Correct answer: A network covering a small geographic area like an office
A Local Area Network (LAN) connects devices within a limited area such as a home, school, or office building.
Question 3: What is the purpose of an operating system's file system?
- Compress network traffic
- Organize and manage files stored on disk (Correct answer)
- Render graphics on screen
- Translate machine code to assembly
Correct answer: Organize and manage files stored on disk
The file system organizes data into files and directories and manages how data is stored and retrieved on storage devices.
Question 4: Which of the following is an example of volatile memory?
- DVD-ROM
- Hard disk drive
- RAM (Correct answer)
- Flash drive
Correct answer: RAM
RAM (Random Access Memory) is volatile, meaning its contents are lost when power is removed.
Question 5: A firewall is primarily used to:
- Speed up internet connections
- Store backup copies of files
- Monitor and control incoming and outgoing network traffic (Correct answer)
- Convert analog signals to digital
Correct answer: Monitor and control incoming and outgoing network traffic
A firewall filters network traffic based on security rules to protect a system from unauthorized access.
Question 6: What does 'resolution' refer to in the context of a display monitor?
- The speed at which pixels refresh
- The number of pixels displayed horizontally and vertically (Correct answer)
- The color depth of each pixel
- The size of the monitor in inches
Correct answer: The number of pixels displayed horizontally and vertically
Resolution describes the total number of pixels in width × height (e.g., 1920×1080), determining image sharpness.
Question 7: Which programming concept allows a function to call itself?
- Iteration
- Recursion (Correct answer)
- Polymorphism
- Encapsulation
Correct answer: Recursion
Recursion is a technique where a function calls itself to solve a smaller instance of the same problem.
DSST Introduction to Computing 3
What is a 'bit' in computing?