Question 155 of 509

Java Platform Overview and Packaging →hardMultiple SelectObjective-mapped

Quick Answer

The correct answer identifies that the opens directive allows reflective access to all types and members in the opened package, including private members, while a qualified export restricts access to specified modules. This is because the Java module system enforces strong encapsulation by default, but opens explicitly grants deep reflection access at runtime, which is essential for frameworks like Hibernate or Spring that rely on private field access. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this question tests your ability to distinguish between compile-time access (exports) and runtime reflective access (opens), as well as between service consumption (uses) and service provision (provides). A common trap is confusing requires static with requires alone—remember that requires static makes a dependency optional at runtime, while a plain requires is mandatory. Memory tip: think of opens as “opening the door for reflection,” while exports is “exporting for compilation.”

1Z0-829 Java Platform Overview and Packaging Practice Question

This 1Z0-829 practice question tests your understanding of java platform overview and packaging. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 are true about Java module declarations? (Choose two.)

Question 1hardmulti select

Full question →

A
The uses directive is used to specify that a module provides a service implementation.
Why wrong: uses declares a service dependency; provides declares an implementation.
B
A module can read another module only if it explicitly requires it.
Why wrong: Modules can also read other modules via requires transitive, and java.base is implicitly required.
C
A qualified export allows access to the exported package only to specific modules.
Qualified exports restrict accessibility to a comma-separated list of module names.
D
The requires directive can be used to specify a module that is optional.
Why wrong: Optional dependencies require the static modifier: requires static.
E
The opens directive allows reflective access to all types and members in the opened package, including private members.
opens grants full reflective access at runtime, but not compile-time access.

Full breakdown with real-world context →

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

✓

A qualified export allows access to the exported package only to specific modules.

Options A and B are correct. A qualified export (exports package to module) restricts access to specified modules. The opens directive grants reflective access to all members, including private ones. Option C is false because java.base is implicitly required; in a named module, other modules must be explicitly required or inherited. Option D is false: uses is for consuming services, provides is for implementing them. Option E is false: requires static makes a dependency optional, not requires alone.

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.

✗
The uses directive is used to specify that a module provides a service implementation.
Why it's wrong here
uses declares a service dependency; provides declares an implementation.
✗
A module can read another module only if it explicitly requires it.
Why it's wrong here
Modules can also read other modules via requires transitive, and java.base is implicitly required.
✓
A qualified export allows access to the exported package only to specific modules.
Why this is correct
Qualified exports restrict accessibility to a comma-separated list of module names.
Related concept
Read the scenario before looking for a memorised answer.
✗
The requires directive can be used to specify a module that is optional.
Why it's wrong here
Optional dependencies require the static modifier: requires static.
✓
The opens directive allows reflective access to all types and members in the opened package, including private members.
Why this is correct
opens grants full reflective access at runtime, but not compile-time access.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
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 practitioner preparing for the 1Z0-829 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Identify which 1Z0-829 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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.

10 questions 20 questions 30 questions 50 questions Timed 30

1Z0-829 practice-test guide →Study guide →Browse all practice tests

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: A qualified export allows access to the exported package only to specific modules. — Options A and B are correct. A qualified export (exports package to module) restricts access to specified modules. The opens directive grants reflective access to all members, including private ones. Option C is false because java.base is implicitly required; in a named module, other modules must be explicitly required or inherited. Option D is false: uses is for consuming services, provides is for implementing them. Option E is false: requires static makes a dependency optional, not requires alone.

What should I do if I get this 1Z0-829 question wrong?

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 →

How Courseiva writes practice questions · Editorial policy

Same concept, more angles

1 more ways this is tested on 1Z0-829

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. Which TWO statements about module descriptors are true?

medium

A.A module descriptor can use the provides keyword to declare that it uses a service.
✓ B.A module descriptor can use the opens keyword to enable deep reflection on specific packages.
C.A module descriptor must require the java.base module explicitly.
D.A module descriptor can specify which packages are exported with the export keyword.
✓ E.A module descriptor can use the transitive keyword only with requires directives.

Why B: Option B is correct because the `opens` keyword in a module descriptor (module-info.java) allows deep reflection (access to private members) on specific packages at runtime, which is necessary for frameworks like Hibernate or JPA that rely on reflection. Option E is correct because the `transitive` keyword is used only within `requires` directives to indicate that any module that requires the current module also implicitly requires the specified module.

Keep practising

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.

Loading comments…

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.