1z0-811 practice test

1. Question 1 · 1

   Which statement is true about primitive variables?

   Choose one answer.

   • They can be compared with the == operator.
   • They can be compared with the equals method only.
   • They cannot be compared.
   • They can be compared with the compareTo method only.

2. Question 2 · 1

   Given the code fragment: Which code fragment, when inserted at line n1, enables the code to print Java Programming:1?

   Choose one answer.

   

   • System.out.println(name + “:” + count);
   • System.out.println(c.name + “:” + count);
   • System.out.println(c.name + “:” + Course.count);
   • System.out.println(Course.name + “:” + c.count);

3. Question 3 · 1

   Given: Why does the compilation fail?

   Choose one answer.

   

   • The option variable is not initialized.
   • The order of case labels is incorrect.
   • The option data type is incorrect.
   • The break statement is missing.

4. Question 4 · 1

   Given: What is the result?

   Choose one answer.

   

   • [null:-]
   • [ : ]
   • [null:null]
   • [:null]

5. Question 5 · 1

   Which two Java reserved words are used to implement encapsulation?

   Choose all answers that apply.

   • final
   • static
   • public
   • extends
   • private

6. Question 6 · 1

   Which two statements are true about the Java Runtime Environment (JRE)?

   Choose all answers that apply.

   • It is responsible for garbage collection.
   • It interprets bytecode stored in a .class file.
   • It contains the JDK and Java APIs.
   • It is platform independent.
   • You must install the JRE to compile a .java file.

7. Question 7 · 1

   Identify two features of Java.

   Choose all answers that apply.

   • architecture dependent
   • platform independent
   • single threaded
   • robust

8. Question 8 · 1

   Given: What is the result?

   Choose one answer.

   

   • 300
   • 100
   • 200
   • A compilation error occurs.

9. Question 9 · 1

   Given the code fragment: What is the result?

   Choose one answer.

   

   • 2
   • 4
   • The program executes an infinite number of times.
   • 3

10. Question 10 · 1

    Given the code fragment: What is the result?

    Choose one answer.

    

    • 3
    • A compilation error occurs.
    • 2
    • 0

11. Question 11 · 1

    Given: And the code fragment: What is the result?

    Choose one answer.

    

    

    • A compilation error occurs at line n1.
    • White : null
    • null: null
    • White : White

12. Question 12 · 1

    Given the code: Which code fragment, when inserted at line n1, enables the code to print sum is 30?

    Choose one answer.

    

    • int sum(int a, b) {
    • int sum(int a, int b) {
    • int sum(int, int) {
    • int sum(int[] a, b) {

13. Question 13 · 1

    You have a microprocessor board, such as Raspberry PI, wired to control a drone. Which edition of Java is geared towards use of simple, closed systems with constrained memory requirements, such as a microprocessor board?

    Choose one answer.

    • Java Micro Edition
    • Java Standard Edition with a Compact Profile
    • Java Enterprise Edition
    • Java SE Embedded

14. Question 14 · 1

    Identify two Java reserved words.

    Choose all answers that apply.

    • array
    • true
    • this
    • exception
    • string

15. Question 15 · 1

    Identify two valid data types for the operands of the addition (+) operator?

    Choose all answers that apply.

    • string
    • boolean
    • numeric
    • array

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