Quiz: Computing Foundations and Digital Media — 14 questions

1. Which development is recognized as a significant milestone in modern computing?

A. The World Wide Web

B. The photographic film reel

C. The mechanical typewriter

D. The vacuum thermometer

Answer: (A)

Explanation

The World Wide Web is identified as one of the significant developments in modern computing. The other choices are not listed as major computing milestones in this context.

2. What is a transistor?

A. A material that stores integrated-circuit parts

B. A semiconductor component with three connections

C. A browser system for sharing Internet documents

D. A complete computer system with a monitor

Answer: (B)

Explanation

A transistor is a semiconductor component with three connections. A microchip, by contrast, is the material that holds the parts of an integrated circuit.

3. Which description best defines a microchip?

A. A network system for viewing documents in a browser

B. A desk-based system containing a tower and monitor

C. A three-connection component that controls electrical signals

D. A small semiconductor material holding integrated-circuit parts

Answer: (D)

Explanation

A microchip is a small piece of semiconducting material that holds integrated-circuit parts. The three-connection component described in another choice is a transistor rather than a microchip.

4. A student opens linked documents through a web browser over the Internet; which system is being used?

A. The World Wide Web

B. A silicon transistor

C. An integrated circuit

D. A Census Tabulating Machine

Answer: (A)

Explanation

The World Wide Web is an Internet-based system in which documents can be shared and viewed through a web browser. An integrated circuit and a transistor are hardware components, while the Census Tabulating Machine was an earlier computing development.

5. Which arrangement best describes a desktop computer?

A. A monitor built from red, green, and blue light elements

B. A browser-based system for sharing documents online

C. A desk-based system with a tower, monitor, keyboard, and mouse

D. A handheld device combining phone functions with Internet access

Answer: (C)

Explanation

A desktop computer is designed to fit on a desk and typically includes a tower, monitor, keyboard, and mouse. A handheld device with phone and computer capabilities is a smartphone.

6. A person uses one handheld device to make calls, browse the Internet, and run computer applications; what device is this?

A. A desktop computer

B. An RGB display

C. A smartphone

D. A microchip

Answer: (C)

Explanation

A smartphone is a mobile device that combines cell phone and computer capabilities, including Internet browsing. A desktop computer is designed for placement on a desk rather than handheld use.

7. Why do computers use binary to encode digital data?

A. Binary uses the two digits zero and one

B. Binary stores information as linked browser documents

C. Binary requires eight symbols for each data unit

D. Binary directly reproduces physical sound waves

Answer: (A)

Explanation

Binary is a counting system using only zero and one, which computers use to encode digital data. Directly reproducing a real-world signal describes analog recording rather than binary.

8. How many bits make up one byte?

A. One hundred bits

B. Two bits

C. One thousand twenty-four bits

D. Eight bits

Answer: (D)

Explanation

A bit is a single zero or one, and eight bits together form a byte. Two digits describe the symbols used in binary, not the number of bits in a byte.

9. Which example represents analog recording rather than digital representation?

A. A single zero stored as one bit

B. A group of eight bits forming one byte

C. A sequence made from strings of zeros and ones

D. A sound wave recorded onto a vinyl disc

Answer: (D)

Explanation

Analog recording directly represents or reproduces something in the real world, such as a sound wave on a vinyl disc. Strings of zeros and ones represent digital data rather than an analog signal.

10. How is digital data represented?

A. As a string of ones and zeros

B. As a continuous physical sound wave

C. As a set of red, green, and blue lights

D. As a mechanical pattern on a paper card

Answer: (A)

Explanation

Digital data is represented as a string of ones and zeros. A continuous sound wave is an example of an analog representation, not the defining form of digital data.

11. What is the primary purpose of file compression?

A. To reduce the size of a file

B. To increase the resolution of a video

C. To convert a file into a different format

D. To improve the color accuracy of an image

Answer: (A)

Explanation

File compression reduces the amount of storage space a file requires. Uncompressed storage retains the file without applying this size reduction.

12. How does run-length encoding simplify repeated data in a file?

A. It changes raster images into vector images

B. It increases the number of pixels in each image

C. It compares the quality of sound and video files

D. It represents repeated data more compactly

Answer: (D)

Explanation

Run-length encoding is a simple compression algorithm that represents repeated data in a more compact way. File compression is the broader method, while run-length encoding is one specific technique used to achieve it.

13. What do ethics involve in the context of personal behavior?

A. Building responsibility and trust

B. Changing the format of digital images

C. Reducing the storage size of files

D. Improving the speed of a device

Answer: (A)

Explanation

Ethics involve personal behaviors that build responsibility and trust. Technical processes such as compression concern how files or devices function rather than responsible conduct.

14. Why should ethical considerations be included when evaluating evolving technologies?

A. They determine how many pixels an image contains

B. They identify whether a device uses raster graphics

C. They address responsibility and trust

D. They measure how quickly a file transfers

Answer: (C)

Explanation

Ethical considerations help evaluate the responsibility and trust associated with evolving forms of technology. Technical features describe how a device or file works but do not address its ethical implications.