Interview Questions on Garbage Collection in Java

Questions on garbage collection play a crucial role in cracking interviews. The garbage collection concept is critical in Java, particularly for memory management.

1) Garbage Collection in Java enables ——— management of memory.

A) Systematic

B) Manual

C) Automatic

D) Semi-automatic

2) Objects in Java are stored inside the ————-.

A) JVM

B) JRE

C) RAM

D) Heap Memory

3) In Java, garbage collection helps to simplify the process of 

A) Memory Management

B) Improving free space in the memory

C) Collecting waste from memory

D) All the above

4) The purpose of the garbage collector is to scan the heap memory periodically to find ———- objects.

A) Unused

B) Reachable

C) Useful

5) The garbage collection involves the following steps in the order of ——-.

A) Compacting, Sweeping, and Marking

B) Sweeping, Compacting, and Marking

C) Marking, Sweeping, and Compacting

D) Compacting, Marking, and Sweeping

6) The System.gc() method helps to request the JVM for running the

A) Heap Memory

B) Exception Handling

C) Garbage Collector

D) All the Above

7) The garbage collector, while running —— the normal program execution.

A) Affects

B) Do not Affect

8) Garbage collection enables —— allocation of memory, allowing the development of an efficient program.

A) Dynamic

B) Vertical

C) Horizontal

D) Static

9) —– is the benefit of running a garbage collector in Java.

A) Memory Optimization

B) Improved Performance

C) Avoid Memory Leaks

D) All the Above

10) Lastly, garbage collector helps to enhance productivity and reduce errors.

A) True

B) False