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 about Java module types are true?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
An automatic module exports all its packages.
Option A is correct because the Java module system automatically exports all packages of an automatic module, making them accessible to other modules without explicit export declarations. This is a key characteristic of automatic modules, which are created from JAR files placed on the module path without a module-info.java file.
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.
✓
An automatic module exports all its packages.
Why this is correct
Automatic modules export every package in the JAR.
Related concept
Read the scenario before looking for a memorised answer.
✗
An automatic module can access all packages of named modules without explicit requires.
Why it's wrong here
Automatic modules can only access exported packages of named modules.
✗
The unnamed module can read only the java.base module.
Why it's wrong here
The unnamed module can read all named modules on the module path.
✓
A named module requires a module-info.java file at compile time.
Why this is correct
Named modules must have a module declaration.
Related concept
Read the scenario before looking for a memorised answer.
✗
The unnamed module is a named module.
Why it's wrong here
The unnamed module is not a named module; it's a special module for the classpath.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing the 'reads all other modules' capability of automatic modules with the ability to access all packages of those modules, when in fact only exported packages are accessible.
Detailed technical explanation
How to think about this question
Automatic modules bridge the gap between the classpath and the module path, allowing JARs without module-info.java to be treated as modules. They implicitly export all packages and can read all other modules, which can lead to unintended dependencies if not managed carefully. In real-world migration scenarios, automatic modules help incrementally modularize existing applications by allowing non-modular JARs to coexist with named modules.
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 — 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: An automatic module exports all its packages. — Option A is correct because the Java module system automatically exports all packages of an automatic module, making them accessible to other modules without explicit export declarations. This is a key characteristic of automatic modules, which are created from JAR files placed on the module path without a module-info.java file.
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.
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Question Discussion
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