1Z0-811 Java Development and Deployment

Question 1

What is the purpose of the "module-info.java" file in a Java module?

Accepted Answer

To specify the modules that the current module depends on and the packages it exports

Answer

To define the entry point of the Java application

Answer

To manage the Java Virtual Machine (JVM) configuration

Answer

To handle logging and error reporting

Question 2

How does Java handle memory management and garbage collection?

Accepted Answer

By using a garbage collector to automatically reclaim memory from objects that are no longer in use

Answer

By manually allocating and freeing memory for objects

Answer

By requiring developers to manage memory allocation through pointers

Answer

By using fixed-size memory blocks that are pre-allocated

Question 3

What does the "javac" command do?

Accepted Answer

It compiles Java source code into bytecode

Answer

It executes a Java application

Answer

It packages Java bytecode into a JAR file

Answer

It starts the Java Virtual Machine (JVM)

Question 4

What is a JAR file in Java?

Accepted Answer

A compressed file format used to bundle multiple Java class files and associated metadata into a single archive

Answer

A file used to define Java classes in a specific module

Answer

A configuration file used to set JVM parameters

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A documentation file generated by JavaDoc

Question 5

What is the -classpath option used for when running the java command?

Accepted Answer

To set the path for finding Java libraries and classes during runtime

Answer

To specify the path where Java source files are located

Answer

To define the location of the module-info.java file

Answer

To configure the Java Virtual Machine (JVM) memory settings