Unit 1 Vocabulary

What is the binary representation of the decimal number 5?

• 101

• 110

• 111

• 100

Which of the following best describes a byte?

• 4 bits

• 8 bits

• 16 bits

• 32 bits

What is the main difference between analog data and digital data?

• Analog data changes discretely, digital data changes continuously.

• Analog data changes continuously, digital data changes discretely.

• Both change continuously.

• Both change discretely.

Which of the following is an example of a round-off error?

• Representing 3.14159 as 3.14

• Representing 256 as 255

• Representing 1000 as 1024

• Representing 0.5 as 1

What is the purpose of sampling in digital data representation?

• To increase the size of the data

• To create a digital representation of analog data

• To compress data without losing information

• To encrypt data for security

Which of the following is a characteristic of lossless compression?

• Some information is lost during compression.

• The process is reversible.

• It is used only for images.

• It cannot be used for text files.

What is an overflow error?

• An error from attempting to represent a number that is too large.

• An error from attempting to represent a number that is too small.

• An error from rounding a number.

• An error from dividing by zero.

Which of the following is an example of intellectual property?

• A public domain book

• A patented invention

• A natural resource

• A mathematical formula

What is the main purpose of Creative Commons licenses?

• To restrict the use of a work

• To enable free distribution of a copyrighted work

• To ensure a work is kept secret

• To sell a work to the highest bidder

Which of the following best describes lossy compression?

• It reduces the number of bits needed without losing any information.

• It reduces the number of bits needed but some information is lost.

• It increases the number of bits needed to store data.

• It is only used for text files.