Oracle 1Z0-811 Online Practice Questions and Exam Preparation

Oracle 1Z0-811 Online Questions & Answers

• Question 11:

  Given:

  

  What is the output?

  A. 1 2 3 aaaa
  B. 1 2 aaa
  C. Compilation fails
  D. a
  D. a

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• Question 12:

  Given the code fragment:

  

  What is the result?

  A. 10
  B. 11
  C. 12
  D. 13
  C. 12

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• Question 13:

  Given the code fragment:

  

  At which line does a compilation error occur?

  A. lines 5 and 7
  B. line 7
  C. lines 6 and 8
  D. line 5
  D. line 5

• Question 14:

  Given the code fragment:

  

  Which for loop statement can be used to print 135?

  A. for(int idx = 1; idx < arr.length; idx+=2) { System.out.print (arr[idx]); }
  B. for(int idx = 1; idx < arr.length?; idx++) { System.out.print (arr[idx++]); }
  C. for(int idx = 0; idx < arr.length; idx++) { System.out.print (arr[idx]); }
  D. for(int idx = 0; idx < arr.length; idx+=2) { System.out.print (arr[idx]); }
  D. for(int idx = 0; idx < arr.length; idx+=2) { System.out.print (arr[idx]); }

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• Question 15:

  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?

  A. Java Micro Edition
  B. Java Standard Edition with a Compact Profile
  C. Java Enterprise Edition
  D. Java SE Embedded
  D. Java SE Embedded

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  Reference: https://www.oracle.com/technical-resources/articles/java/raspberrypi.html

• Question 16:

  Which package would you import to use the Random class?

  A. java.io
  B. java.math
  C. java.util
  D. java.lang
  C. java.util

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  Reference: https://www.educative.io/edpresso/how-to-generate-random-numbers-in-java

• Question 17:

  Which statement is true about primitive variables?

  A. They can be compared with the == operator.
  B. They can be compared with the equals method only.
  C. They cannot be compared.
  D. They can be compared with the compareTo method only.
  B. They can be compared with the equals method only.

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  Reference: https://stackoverflow.com/questions/9690981/compare-two-primitive-long-variables-in-java

• Question 18:

  Given: At which line does a compilation error occur?

  

  A. line 5
  B. line 2
  C. line 3
  D. line 7
  A. line 5

• Question 19:

  Which statement is true about a Java method?

  A. It must be declared with an access modifier.
  B. It cannot be defined within another method.
  C. It must accept a parameter and return a value.
  D. It cannot be defined as static final.
  B. It cannot be defined within another method.

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  Reference: https://www.quora.com/Can-we-define-a-function-within-another-function-in-Java

• Question 20:

  Given the code fragment: What is the result?

  

  A. 456789
  B. 4567889
  C. 45678
  D. 3456789
  A. 456789

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