Unit 1 Review AP CSP

What is a variable?

• A placeholder for a value

• Calculation

• A program that names something

• A type of number

The process of imagining something that does not yet exist, but that has potential value, and making it real through the application of design, implementation, and production

• iterative development process

• innovating

• iteration

• debug

to identify and remove errors from a computer program

• iterative development process

• iteration

• debug

• innovating

repeatedly applying a process with the goal of coming closer and closer to a solution

• innovating

• debug

• iterative development process

• iteration

Understanding of the life cycle of a program is an essential component to becoming an effective programmer. Which of the following is the best example of how the life cycle of a program should work?

• Idea→write code→algorithm→execute code→debug→maintain

• Idea→algorithm→write code→execute code→maintain→debug

• Idea→algorithm→write code→execute code→debug→maintain

• Idea→algorithm→write code→debug→execute code→maintain

Jeremiah is part of a group planning a summer fair at which local businesses can run stalls and events. He wants to use his programming skills to develop an app for the fair which businesses will be able to use to communicate information about their activities at the fair with visitors. Which of the following would be the best first step for Jeremiah to take?

• Develop all of the major algorithms which will be required for the app by drawing flowchart representations

• Find out from the businesses and potential visitors what information and format they think should be used for the app

• Write some sample code to understand how the app might work

• Write thorough documentation explaining how the code for the app works

A program that Thomas has written is complete. It has been tested thoroughly, and some outputs were not as expected. Thomas is now going through the code carefully attempting to establish the cause of these errors and change the code to remove them. What is this procedure called?

• Debugging

• Development

• Error check

• Coding

Nick wishes to create a variable in his scratch game which records the best score by a player so far. Which of the following would be the most appropriate name for this variable?

• Variable1

• best_score

• b

• theBestScoreSoFarByAPlayer

Jasper is attempting to create instructions for folding clothes which could be described as an algorithm. Which of the following would be a feature of Jasper’s instructions if they could be considered to describe an algorithm?

• The instructions would be completely random

• The instructions would result in exactly the same actions being performed for every item of clothing

• The instructions would involve logical decisions and specific ordered sets of actions.

• The instructions would be written in a high-level programming language

Hiro is writing a program which will record the number of cars passing a certain point in town every hour in a day, then record the range of this data by subtracting the smallest total from the largest. He will use a variable, rge, to store the range. Which variable type would be most suitable for rge?

• Floating point (float)

• Integer (int)

• Boolean

• String