Data and Society Chapter 1

Why do different representations matter when solving problems?

• They allow for better graphics in presentations

• They are required by computer systems

• They are good for solving different problems and have advantages and disadvantages depending on the problem

• They make it easier to communicate with people who speak different languages

What is the meaning of "Decode" in the context of information representation?

• To change how information is represented so it can be read by a computer

• To change how information is represented so it can be read by a person

• To create a new system for representing information

• To encrypt information for secure transmission

What is the meaning of "Encode" in the context of information representation?

• To change how information is represented so it can be read by a person

• To change how information is represented so it can be read by a computer

• To create a new system for representing information

• To encrypt information for secure transmission

Why do computer scientists care about systems for representing information?

• Because they make it easier to communicate with people

• Because a computer doesn't "understand" the world the way humans do

• Because they need to follow government regulations

• Because it helps them understand human psychology

What is ASCII commonly used for?

• Representing numbers in binary

• Representing text in binary

• Encrypting data for security

• Translating languages automatically

What is a bit?

• A system for representing information

• A type of wire used in computers

• A single piece of binary information

• A tool used by computer scientists

What is a pixel?

• A tool used to solve big problems

• A single piece of binary information

• A tiny square or dot which contains a single point of color of a larger image

• A way of representing information using only two options

Why do computers use binary systems?

• Because it's the simplest way to represent information

• To make it easier to solve problems

• Because they can only be on or off

• To represent different colors in an image

What is the purpose of encryption in data protection?

• To ensure that everyone can decode the information easily

• To change the form of data to make it easier to store and process

• To hide the meaning of data from unintended recipients

• To keep a long list or a large table of information

What is the main difference between encoding and encryption?

• Encoding changes the form of data for easy storage, while encryption hides data for security.

• Encoding and encryption are both used to hide data from everyone.

• Encryption changes data into binary form, while encoding does not.

• Encoding ensures that only the intended recipient can read the information.