CodeHS Unit 8: Digital Information

Front

What is binary code and how is it used to represent digital information?

Back

Binary code is a system of representing numbers, letters, and symbols using only two options: 0 and 1. It is used to represent digital information by encoding data into a series of 0s and 1s.

Front

Explain the concept of encoding and decoding in the context of digital information.

Back

Encoding is the process of converting data into a specific format for transmission or storage, while decoding is the process of converting the encoded data back into its original form.

Front

What is the difference between analog and digital signals?

Back

Analog signals are continuous and can take any value within a range, while digital signals are discrete and can only take specific values.

Front

Discuss the importance of data compression in digital information.

Back

It reduces storage space and allows for faster data transmission.

Front

Discuss the concept of encryption and its significance in digital information security.

Back

Encryption is the process of converting information into a code to prevent unauthorized access. It is significant in digital information security as it helps protect sensitive data from being accessed by unauthorized users.

Front

Discuss the ethical considerations related to the use and distribution of digital information.

Back

Ethical considerations related to the use and distribution of digital information include privacy, security, intellectual property, and access to information.

Front

Which of the following best describes how computing devices represent information? A computer will either represent information as bits or bytes but not both, A computer represents data as a byte which is either a 0 or a 1., A computer represents data as bits which is either a 0 or a 1., A computer represents information as bits which contain 8 bytes.

Back

A computer represents data as bits which is either a 0 or a 1.

Front

How many numbers can be represented with an 8-bit binary system?

Back

256

Front

Which of the following best describes how computing devices represent information? A computer will either represent information as bits or bytes but not both, A computer represents data as a byte which is either a 0 or a 1., A computer represents data as bits which is either a 0 or a 1., A computer represents information as bits which contain 8 bytes.

Back

A computer represents data as bits which is either a 0 or a 1.

Front

How many numbers can be represented with an 8-bit binary system?

Back

256