Unit 1: Primitive Types - AP Computer Science A

Unit 1: Primitive Types - AP Computer Science A

9th - 12th Grade

33 Qs

quiz-placeholder

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Unit 1: Primitive Types - AP Computer Science A

Unit 1: Primitive Types - AP Computer Science A

Assessment

Quiz

Computers

9th - 12th Grade

Hard

Created by

Arasaka Teacher

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33 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

If your code has a syntax error, what kind of error will you see on the console?

compile-time error

ArithmeticException

logic error

NullPointerException

IndexOutOfBoundsException

2.

DRAG AND DROP QUESTION

3 mins • 1 pt

​ (a)   means to tell the computer that you want to use a variable and give it a name.

​ (b)   means to give that variable its first value.

Declare
Initialize
Start
Create
Make

3.

FILL IN THE BLANK QUESTION

45 sec • 1 pt

The word c_____e means to change source code (like Java) into machine code or bytecode (e.g. 0s and 1s).

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

You need to create a variable for the number of cars owned. Which variable initialization is best?

int carsOwned;

double carsOwned;

int num_cars;

double numberOfCarsOwned;

int numberOfCarsOwned;

Answer explanation

You can't have half a car or 0.5 cars, so we should create an "int" variable.

Good variable names are easy to understand, short, and written in camelCase.

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

You need to create a variable for the number of computers in the school lab. Which variable initialization is best?

int computersInLab;

double computersInLab;

int num_computers_in_lab;

double numberOfComputersInLab;

int numberOfComputersInLab;

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to choose good variable names when creating variables in Java?

Good variable names improve code readability and maintainability, making it easier to cooperate with others..

Good variable names improve code efficiency.
Good variable names reduce the size of the code.
Good variable names make the code run faster.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

You need to create a variable for the price of a sandwich. Which variable initialization is best?

int sandwichPrice;

double sandwichPrice;

int sandwich_price;

double priceOfASandwich;

int priceOfASandwich;

Answer explanation

Prices are usually written in decimal form (e.g. $xx.xx), so it's best to use a "double" variable.

Good variable names are easy to understand, short, and written in camelCase.

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