CSP digi info

What type of numbers do computers specifically use?

• Decimal

• Binary

• Hexadecimal

• Octal

How do restaurants often encode their menu items?

• With colors

• With numbers

• With letters

• With symbols

Why might encoding information be useful in a restaurant setting?

• To confuse customers

• To simplify ordering

• To increase prices

• To reduce menu items

Data abstraction helps in managing data by:

• Complicating it

• Simplifying it

• Deleting it

• Encrypting it

What is data abstraction?

• Manipulating data to create something new

• Storing data in as little space as possible

• The process of simplifying complicated data into manageable chunks

• Filtering data to gain new knowledge

Which of the following are examples of encoding information?

• Representing fast food meals as numbers on the menu. For example a number 1 represents a hamburger.

• Assigning a numeric value to every area of a region, for example zip codes in the United States

• Assigning a number to every character of the alphabet so we can represent sentences as series of simple digits.

• All of the above

Which of the following would be the highest level of abstraction?

• Milky Way Galaxy

• Earth

• Los Angeles

• Chino High

What two numbers do we use in binary?

• -1 & 0

• 2 & 1

• 1 & 0

• 4 & 0

A school database has lots of information on students, the data manager needs to use abstraction. What data should she leave out?

• Age

• Guardian's phone numbers

• Classes

• Eye colour

What is abstraction?

• Removal of certain details, keeping relevant the information

• Stores data in a program for retrieval

• Freedom from representing art

• Detects errors while program is running