Oracle 1Z0-811 Certification Sample Questions and Answers

1Z0-811 PDF, 1Z0-811 Dumps PDF Free Download, 1Z0-811 Latest Dumps Free PDF, Java Foundations PDF DumpsThe Oracle Java Foundations (1Z0-811) Sample Question Set is designed to help you prepare for the Java Certified Foundations Associate certification exam. To become familiar with the actual Oracle Certification exam environment, we suggest you try our Sample Oracle 1Z0-811 Certification Practice Exam.

This Oracle Java Foundations certification sample practice test and sample question set are designed for evaluation purposes only. If you want to test your Oracle 1Z0-811 knowledge to identify your areas of improvement and get familiar with the actual exam format, we suggest you prepare with the Premium Java Certified Foundations Associate Certification Practice Exam. Our team of Oracle Java experts has designed Questions-Answers for this premium practice exam by collecting inputs from recently certified candidates. Our premium Oracle 1Z0-811 certification practice exam will boost your confidence as well as your actual Oracle Certified Foundations Associate, Java exam result.

Oracle 1Z0-811 Sample Questions:

01. Consider how the JDK, the JRE, and the JVM relate to one another.
Which two statements are true?
(Choose two.)
a) The JRE contains the javac compiler used to build programs
b) The JDK contains a JRE, which in turn contains a JVM
c) The JVM is a superset of the JDK and includes the compiler
d) Running an already-compiled program requires at least a JRE
e) The JVM translates .java source files directly into .class files
 
02. Which one of these variable declarations compiles in Java SE 8?
a) char c = "A";
b) int n = 1_000_000_;
c) char c = 'AB';
d) int million = 1_000_000;
 
03. Given String s = "Oracle"; what does s.charAt(1) return?
a) 'O'
b) 'r'
c) 'a'
d) 'c'
 
04. int x = 5;
if (x = 3) {
System.out.println("hit");
}
What is the result of trying to compile and run this fragment?
a) It prints hit.
b) It runs but prints nothing.
c) Compilation fails.
d) It throws an exception at run time.
 
05. What is the value of Math.max(-8, -3)?
a) -3
b) 8
c) 3
d) -8
 
06. You have a source file Hello.java that contains a public class named Hello.
Which command compiles it, and what file does a successful compile produce?
a) java Hello.class, which produces Hello.java
b) java Hello.java, which produces Hello.class
c) javac Hello, which produces Hello.java
d) javac Hello.java, which produces Hello.class
 
07. In Java, what is primarily responsible for reclaiming the memory used by objects that are no longer referenced?
a) The garbage collector, which automatically frees unreachable objects at runtime.
b) The compiler, which removes unused objects while it translates the source.
c) The operating system, which clears all of a program's memory after each method returns.
d) The programmer, who must free each object explicitly with a delete statement.
 
08. A developer compiles a program on Windows and copies the resulting .class file to a Linux machine, where it runs without being recompiled.
What makes this possible?
a) The Java compiler produces native machine code that every operating system can execute directly.
b) The source file is recompiled automatically by the operating system before it runs.
c) javac produces platform-neutral bytecode that a JVM on each platform executes.
d) The .class file contains a separate machine-code section for each supported operating system.
 
09. Someone claims that Java is a purely interpreted scripting language whose source runs directly, line by line, with no compilation step.
Why is this description inaccurate?
a) Because Java source is never compiled and is instead run directly by the java launcher as native code.
b) Because Java source must first be converted by the operating system into a scripting format.
c) Because Java source is compiled ahead of time straight into CPU-specific machine code.
d) Because javac first compiles the source to bytecode, which the JVM then loads and executes.
 
10. Given String a = "A"; and String b = "B"; which two expressions evaluate to the String "AB"?
(Choose two.)
a) a.concat(b)
b) a + b
c) a.append(b)
d) b + a
e) "A" - "B"

Answers:

Question: 01

Answer: b, d

Question: 02

Answer: d

Question: 03

Answer: b

Question: 04

Answer: c

Question: 05

Answer: a

Question: 06

Answer: d

Question: 07

Answer: a

Question: 08

Answer: c

Question: 09

Answer: d

Question: 10

Answer: a, b

 

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