The correct answer is that the three valid java commands for launching a modular application are those using `--module-path` with `--module`, a single module path with `-m`, and a combination of classpath and module path. These options are valid because the Java module system requires you to specify the module path (via `--module-path` or `-p`) to locate your modules, and then use the `--module` or `-m` flag to designate the main module and its fully qualified main class, such as `com.app/com.app.Main`. On the Oracle Certified Professional Java SE 17 Developer 1Z0-829 exam, this question tests your understanding of the `java` launcher syntax for modular applications, a frequent topic that distinguishes between module path and classpath usage. A common trap is confusing `--add-modules` (which only adds modules to the root set) with `--module`, which actually launches the application. For a quick memory tip, remember that "modular launch needs a path and a main class" — so always pair `--module-path` (or `-p`) with `--module` (or `-m`), and never use `--add-modules` to specify the entry point.
1Z0-829 Java Platform Overview and Packaging Practice Question
This 1Z0-829 practice question tests your understanding of java platform overview and packaging. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 THREE are valid Java commands for launching a modular application?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
java -p mods -m com.app
Options A, C, and D are correct. Option A: correct syntax for module path and main module. Option B: invalid because --add-modules cannot specify a module with a main class; -m is used. Option C: valid with single module path. Option D: valid with classpath and module path. Option E: invalid because -p is for module path, not classpath.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
java -p mods -m com.app
Why this is correct
Short form: -p for module path, -m for module.
Related concept
Static NAT maps one inside address to one outside address.
Correct syntax: --module-path then --module with main class.
Related concept
Static NAT maps one inside address to one outside address.
✗
java -p mods --add-modules com.app -m com.app
Why it's wrong here
--add-modules is for additional modules, not for specifying main module; use -m.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 1Z0-829 NAT questions on configuration and troubleshooting.
Java Platform Overview and Packaging — This question tests Java Platform Overview and Packaging — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: java -p mods -m com.app — Options A, C, and D are correct. Option A: correct syntax for module path and main module. Option B: invalid because --add-modules cannot specify a module with a main class; -m is used. Option C: valid with single module path. Option D: valid with classpath and module path. Option E: invalid because -p is for module path, not classpath.
What should I do if I get this 1Z0-829 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 1Z0-829 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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