AP CSA unit 1 - 4 TEST
Authored by ALPA PUROHIT
Computers
9th - 12th Grade
Used 4+ times
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23 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Consider the following code segment.
System.out.println("W");
System.out.println("X");
System.out.print("Y");
System.out.print("Z");
What is printed as a result of executing the code segment?
WXYZ
W
XYZ
WX
YZ
W
X
YZ
W
X
Y
Z
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Consider the following code segment.
int x = 10;
int y = 20;
/* missing code */
System.out.print(top / bottom);
Which of the following replacements for /* missing code */ will cause an ArithmeticException to occur?
I. int top = x - y;int bottom = y - x;
II.int top = 2 * x;int bottom = y - top;
III. int top = x + y;int bottom = 2 * top;
I. only
II. only
III. only
I. and II.
II. and III.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Consider the following code segment.
String str = "AP";
str += "CS " + 1 + 2;
System.out.println(str);
What is printed as a result of executing the code segment?
CS AP12
AP CS3
CSAP 12
APCS 12
APCS 3
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Consider the following method.
public double calculate(double x)
{
return x + 1.5;
}
The following code segment calls the method calculate in the same class.
Double d1 = new Double(7.5);
System.out.println(calculate(d1));
What, if anything, is printed when the code segment is executed?
8.0
8.5
9
9.0
Nothing is printed because the code does not compile. The actual parameter d1 passed to calculate is a Double, but the formal parameter x is a double.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Consider the following code segment, which is intended to display 6.0.
double fact1 = 1 / 2;
double fact2 = 3 * 4;
double product = fact1 * fact2;
System.out.println(product);
Which of the following best describes the error, if any, in the code segment?
There are no errors and the code works as intended.
Either the numerator or the denominator of the fraction 1 / 2 should be cast as double.
The expression fact1 * fact 2 should be cast as double.
The expressions 1 / 2 and 3 * 4 should both be cast as double.
The variables fact1 and fact2 should both be declared as int.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the expected output?
-1
0
1
17
18
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What does short circuit evaluation mean in the following code?
i) if (a < b && c != d)
if a < b is false it evaluates c != d
if a < b is false it doesn't evaluate c != d
if c != d is false it evaluates a < b
f c != d is false it doesn't evaluate a < b
if a < b is true it doesn't evaluate c != d
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