Question 307 of 481
1Z0-811 What is Java Practice Question
A company is developing a security-sensitive banking application. Which Java feature most directly enhances security?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Bytecode verification
(Bytecode verification) is correct because it performs a series of checks on the bytecode, such as ensuring type safety, no stack overflows, and no illegal jumps, which prevents malicious code from compromising the JVM. Option A (garbage collection) manages memory automatically but does not directly enforce security. Option B (platform independence via bytecode) allows Java to run on any platform but does not inherently provide security. Option C (built-in multithreading support) facilitates concurrent execution but is not a security feature.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Automatic garbage collection
Why it's wrong here
Garbage collection prevents memory leaks, but is not a primary security feature.
- ✗
Platform independence via bytecode
Why it's wrong here
Platform independence is about portability, not security.
- ✗
Built-in multithreading support
Why it's wrong here
Multithreading is for concurrent programming, not direct security.
- ✓
Bytecode verification
Why this is correct
Bytecode verification checks code for security violations before execution.
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Last reviewed: Jun 23, 2026
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