Quiz for JVM Architecture

Q1: What does JVM stand for?

A. Java Virtual Machine B. Java Verified Memory C. Java Version Manager D. Java Variable Method

Q2: Which memory area is used to store class-level data in JVM?

A. Stack B. Heap C. Method Area D. Native Method Stack

Q3: Which component of JVM is responsible for loading classes?

A. Bytecode Verifier B. Class Loader C. Execution Engine D. Garbage Collector

Q4: What is the role of the Bytecode Verifier in JVM?

A. Compiles Java code B. Allocates memory C. Verifies code format and security D. Executes bytecode

Q5: What is stored in JVM Stack memory?

A. Object references B. Method calls and local variables C. Class metadata D. Bytecode instructions

Q6: Which JVM memory part holds objects and their instance variables?

A. Stack B. Heap C. Method Area D. PC Register

Q7: Which part of the JVM executes the bytecode?

A. Execution Engine B. Garbage Collector C. JDK D. Stack Frame

Q8: What is the purpose of the Program Counter (PC) Register in JVM?

A. Stores method arguments B. Tracks memory usage C. Stores bytecode instruction address D. Stores class names

Q9: Which component handles memory management in JVM?

A. Class Loader B. Execution Engine C. Garbage Collector D. Class Writer

Q10: Which area of memory is used by native method calls?

A. Method Area B. Heap C. Native Method Stack D. PC Register

Q11: What happens when the JVM runs out of heap memory?

A. The system shuts down B. Objects are deleted C. An OutOfMemoryError is thrown D. Program restarts

Q12: What is the use of the Just-In-Time (JIT) compiler in JVM?

A. Compiles Java to bytecode B. Loads classes C. Executes methods ahead of time D. Converts bytecode to native code at runtime

Q13: Which memory structure is created per thread in JVM?

A. Heap B. Method Area C. Stack D. Execution Engine

Q14: Which memory region stores runtime constant pool?

A. PC Register B. Method Area C. Stack D. Native Stack

Q15: Which JVM memory area holds static variables?

A. Stack B. Heap C. Method Area D. PC Register

Q16: What is a stack frame in JVM?

A. A data structure for garbage collection B. A block of bytecode C. A unit of memory for method calls D. A type of memory leak

Q17: How many Program Counters are there in JVM?

A. 1 per JVM B. 1 per method C. 1 per class D. 1 per thread

Q18: What is the main purpose of JVM?

A. Compile Java code B. Provide platform independence C. Create GUIs D. Run native code only

Q19: Which of the following is NOT part of JVM architecture?

A. Class Loader B. Execution Engine C. Garbage Collector D. JDK Compiler

Q20: Which part of JVM interacts directly with the OS?

A. Class Loader B. Native Method Interface C. Garbage Collector D. Stack Frame