Unit 2 Lesson Assessment: Building Blocks of Digital Information

What does digital information refer to?

• Continuous data representation

• Data represented in an analog format

• Data represented and processed in a digital format

• Data stored in physical properties

What are binary digits (bits)?

• Continuous values used to represent data

• Characters in ASCII or Unicode

• Discrete symbols used to represent digital data

• Units of measurement for storage capacity

What is the value range of a bit?

• 0 to 9

• 0 or 1

• -1 to 1

• 0 to 255

Which of the following is NOT a characteristic of digital information?

• It can be accurately copied.

• It is stored as continuous signals.

• It can be manipulated easily.

• It uses discrete binary values.

Which of these is an example of digital information?

• Vinyl records

• Analog thermometer

• Text in a word document

• Human voice

What are pixels in digital images represented by?

(a)  

What type of data does a byte represent?

• A single binary digit

• A combination of 4 bits

• A collection of 8 bits

• A programming language command

Which of the following is NOT an advantage of digital data?

• Resistance to degradation

• Ease of manipulation

• High-quality degradation over time

• Long-distance transmission

How is sound stored in digital files?

• Using continuous waveforms

• As binary values encoding the sound waveform

• Through physical vibrations

• As analog signals

What does ASCII or Unicode represent?

• Sound data

• Character sets for text representation

• Digital video frames

• Storage capacity