Understanding Data and Encoding

What is data in the context of computers?

• Values representing information that can be stored and edited by a computer

• A type of software used for editing documents

• A physical device used to input information into a computer

• A programming language used to create websites

What is analog data?

• Data that is already in digital form

• Data that needs to be translated into digital form before use by a computer

• Data that is stored in the cloud

• Data that is used only in scientific research

What is digital data?

• Data that is stored on paper

• Data that can be directly used by a computer

• Data that is only used in video games

• Data that is always encrypted

What does it mean to encode data?

• To delete data permanently

• To translate human-readable data into a form that is efficient or protected for transmitting or storing

• To print data on paper

• To create a backup of data

What does it mean to decode data?

• To translate encoded data back into a human-readable form

• To compress data to save space

• To encrypt data for security

• To delete data from a computer

What is the decimal system?

• A method of describing numbers based on the number 2

• A method of describing numbers based on the number 10

• A method of describing numbers based on the number 16

• A method of describing numbers based on the number 8

What is a bit in computing?

• The largest unit of information used in computers

• A unit of information that can be either 1 or 0

• A type of computer virus

• A programming language

Which of the following is an example of analog data?

• A digital photograph

• A paper copy of a worksheet

• A text file on a computer

• An email message

Which of the following is an example of digital data?

• A handwritten letter

• A recorded audio file

• A printed book

• A painting

How many different symbols are used in the decimal system?

• 2

• 8

• 10

• 16