Code.org '20-21 Unit 1 Vocabulary Quiz

What is the definition of a bit?

• A way that you can eat something, say like a sandwich.

• A contraction of "Binary Digit"; the single unit of information in a computer, typically represented as a 0 or 1

• A way to represent information on a computer using powers of 2.

• Multiple pieces of information that a computer reads as a string of 0s and 1s (i.e. 10001010)

How many bits are in a byte?

• 4

• 2

• 1

• 8

What is the definition of an overflow error?

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

• Error from attempting to represent a number that is too precise. The value is rounded.

• Error from attempting to use number other than 0s and 1s to represent data in a computer.

• Error from attempting to calculate a value on a computer.

What is the definition of an roundoff error?

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

• Error from attempting to represent a number that is too precise. The value is rounded.

• Error from attempting to use number other than 0s and 1s to represent data in a computer.

• Error from attempting to calculate a value on a computer.

Which of the following would be representations of analog data given its definition?

• Music

• Colors in a painting

• Instagram pictures

• Position of a sprinter

Which of the following would be representations of digital data given its definition?

• Position of a person walking

• A mobile game on your phone

• Instagram pictures

• A sketch on a piece of paper

What is the definition of lossy compression?

• A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. The process is NOT reversible.

• A process for reducing the number of bits needed to represent something without losing an information. The process IS reversible.

• A process for reducing the number of bits needed to represent something without losing an information. The process is NOT reversible.

• A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. The process IS reversible.

What is the definition of lossless compression?

• A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. The process is NOT reversible.

• A process for reducing the number of bits needed to represent something without losing an information. The process IS reversible.

• A process for reducing the number of bits needed to represent something without losing an information. The process is NOT reversible.

• A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. The process IS reversible.

Which things are examples of binary information?

• Yes or No

• On or Off

• Red, Green, or Blue

• Coffee or Tea

What is Creative Commons?

• A collection of private copyright licenses that enable the free distribution of an otherwise copyrighted work, used when an author wants to give people the right to share, use, and build upon a work that they have created

• A collection of public copyright licenses that enable the free distribution of an otherwise copyrighted work, used when an author wants to give people the right to share, use, and build upon a work that they have created