- A
All classes on the classpath are automatically placed in the boot layer.
Why wrong: Incorrect: Classes on the classpath belong to the unnamed module, not the boot layer.
- B
JPMS provides reliable configuration through explicit module dependencies.
Correct: JPMS requires modules to declare dependencies explicitly, eliminating classpath issues.
- C
A module declaration is placed in a file named module-info.class.
Why wrong: Incorrect: The declaration is in module-info.java, compiled to module-info.class.
- D
JPMS allows the use of the classpath to add modules to the module graph.
Why wrong: Incorrect: Modules are placed on the module path, not the classpath.
- E
JPMS supports strong encapsulation by controlling which packages are accessible to other modules.
Correct: JPMS restricts access to packages unless they are exported.
Quick Answer
The correct answer is that JPMS supports strong encapsulation by controlling which packages are accessible to other modules, and it enforces reliable configuration by requiring explicit dependency declarations via the 'requires' directive. Strong encapsulation works because a module’s `exports` clause explicitly opens only designated packages to other modules, preventing accidental or unauthorized access to internal implementation details—a stark contrast to the traditional classpath’s unrestricted visibility. Reliable configuration eliminates the brittle classpath by mandating that every module declare its dependencies, so missing or conflicting JARs are caught at compile time rather than causing runtime `ClassNotFoundException` errors. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this concept often appears in questions that contrast JPMS with the legacy classpath, with a common trap being the assumption that all packages in a module are automatically accessible. A useful memory tip: think of JPMS as a gated community—each module has a guest list (`exports`) and a list of neighbors it relies on (`requires`), ensuring no one wanders into the wrong house at runtime.
1Z0-829 Java Platform Overview and Packaging Practice Question
This 1Z0-829 practice question tests your understanding of java platform overview and packaging. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO statements about the Java Platform Module System (JPMS) are true? (Choose two.)
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
JPMS provides reliable configuration through explicit module dependencies.
Option B is correct because JPMS enforces reliable configuration by requiring modules to explicitly declare their dependencies using the 'requires' directive in the module descriptor. This eliminates the classpath's silent dependency resolution, where missing or conflicting JARs often cause runtime errors like ClassNotFoundException.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
All classes on the classpath are automatically placed in the boot layer.
Why it's wrong here
Incorrect: Classes on the classpath belong to the unnamed module, not the boot layer.
- ✓
JPMS provides reliable configuration through explicit module dependencies.
Why this is correct
Correct: JPMS requires modules to declare dependencies explicitly, eliminating classpath issues.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A module declaration is placed in a file named module-info.class.
Why it's wrong here
Incorrect: The declaration is in module-info.java, compiled to module-info.class.
- ✗
JPMS allows the use of the classpath to add modules to the module graph.
Why it's wrong here
Incorrect: Modules are placed on the module path, not the classpath.
- ✓
JPMS supports strong encapsulation by controlling which packages are accessible to other modules.
Why this is correct
Correct: JPMS restricts access to packages unless they are exported.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing the unnamed module (classpath) with the boot layer, or assuming that module-info.class is the source file rather than the compiled output, leading candidates to incorrectly select A or C.
Detailed technical explanation
How to think about this question
Under the hood, JPMS uses the module graph to resolve dependencies at startup, ensuring all required modules are present before any code runs. The 'exports' directive controls which packages are accessible to other modules, enforcing strong encapsulation at the JVM level—reflection-based access to non-exported packages is also blocked unless explicitly opened. In real-world scenarios, this prevents accidental use of internal APIs (e.g., sun.misc.Unsafe) and reduces classpath hell in large enterprise applications.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Java Platform Overview and Packaging — study guide chapter
Learn the concepts, then practise the questions
- →
Java Platform Overview and Packaging practice questions
Targeted practice on this topic area only
- →
All 1Z0-829 questions
509 questions across all exam domains
- →
Oracle Certified Professional Java SE 17 Developer 1Z0-829 study guide
Full concept coverage aligned to exam objectives
- →
1Z0-829 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related 1Z0-829 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Handling Date, Time, Text, Numeric and Boolean Values practice questions
Practise 1Z0-829 questions linked to Handling Date, Time, Text, Numeric and Boolean Values.
Controlling Program Flow practice questions
Practise 1Z0-829 questions linked to Controlling Program Flow.
Utilizing Java Object-Oriented Approach practice questions
Practise 1Z0-829 questions linked to Utilizing Java Object-Oriented Approach.
Handling Exceptions practice questions
Practise 1Z0-829 questions linked to Handling Exceptions.
Working with Arrays and Collections practice questions
Practise 1Z0-829 questions linked to Working with Arrays and Collections.
Working with Streams and Lambda Expressions practice questions
Practise 1Z0-829 questions linked to Working with Streams and Lambda Expressions.
Java Platform Overview and Packaging practice questions
Practise 1Z0-829 questions linked to Java Platform Overview and Packaging.
Java I/O API and Securing Applications practice questions
Practise 1Z0-829 questions linked to Java I/O API and Securing Applications.
1Z0-829 fundamentals practice questions
Practise 1Z0-829 questions linked to 1Z0-829 fundamentals.
1Z0-829 scenario practice questions
Practise 1Z0-829 questions linked to 1Z0-829 scenario.
1Z0-829 troubleshooting practice questions
Practise 1Z0-829 questions linked to 1Z0-829 troubleshooting.
Practice this exam
Start a free 1Z0-829 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this 1Z0-829 question test?
Java Platform Overview and Packaging — This question tests Java Platform Overview and Packaging — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: JPMS provides reliable configuration through explicit module dependencies. — Option B is correct because JPMS enforces reliable configuration by requiring modules to explicitly declare their dependencies using the 'requires' directive in the module descriptor. This eliminates the classpath's silent dependency resolution, where missing or conflicting JARs often cause runtime errors like ClassNotFoundException.
What should I do if I get this 1Z0-829 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 11, 2026
This 1Z0-829 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-829 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.