1Z0-829 Java I/O API and Securing Applications Practice Question
This 1Z0-829 practice question tests your understanding of java i/o api and securing applications. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Refer to the exhibit. A Java application is deployed in /opt/app/lib/ and attempts to perform the following operations:
1) Read the file /data/config/settings.xml
2) Write to the file /logs/app.log
3) Read the file /data/config/subdir/extra.conf
Which statement is true?
All three operations are allowed because the code base matches.
Why wrong: The wildcard * in "/data/config/*" does not include subdirectories, so extra.conf is not allowed.
B
Operations 1 and 2 are allowed; operation 3 is denied.
Operation 1 is allowed by "/data/config/*" (file in /data/config/). Operation 2 is explicitly granted. Operation 3 is in a subdirectory, not matched by *.
C
Only operation 1 is allowed; operations 2 and 3 are denied.
Why wrong: Operation 2 is explicitly allowed by the second permission, so it is allowed.
D
Operations 1 and 3 are allowed; operation 2 is denied.
Why wrong: Operation 3 is denied, and operation 2 is allowed.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Operations 1 and 2 are allowed; operation 3 is denied.
The Java application is deployed in /opt/app/lib/, so its code base is /opt/app/lib/. The security policy grants read permission for /data/config/*, which matches /data/config/settings.xml (operation 1) but does not match /data/config/subdir/extra.conf because the wildcard * does not descend into subdirectories (operation 3 is denied). Write permission is granted for /logs/*, so /logs/app.log (operation 2) is allowed. Thus, operations 1 and 2 are allowed, and operation 3 is denied.
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 three operations are allowed because the code base matches.
Why it's wrong here
The wildcard * in "/data/config/*" does not include subdirectories, so extra.conf is not allowed.
✓
Operations 1 and 2 are allowed; operation 3 is denied.
Why this is correct
Operation 1 is allowed by "/data/config/*" (file in /data/config/). Operation 2 is explicitly granted. Operation 3 is in a subdirectory, not matched by *.
Related concept
Read the scenario before looking for a memorised answer.
✗
Only operation 1 is allowed; operations 2 and 3 are denied.
Why it's wrong here
Operation 2 is explicitly allowed by the second permission, so it is allowed.
✗
Operations 1 and 3 are allowed; operation 2 is denied.
Why it's wrong here
Operation 3 is denied, and operation 2 is allowed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
In Oracle Java security policy, the wildcard (*) matches files in the immediate directory only, not subdirectories. To include subdirectories, the policy must use the recursive wildcard (-). For example, /data/config/* matches /data/config/settings.xml but not /data/config/subdir/extra.conf; /data/config/- would match both.
Detailed technical explanation
How to think about this question
In Java security policy files, the wildcard * in a file path (e.g., /data/config/*) matches only files directly in that directory, not files in subdirectories. To match recursively, you must use a trailing slash and asterisk (e.g., /data/config/-) or a double asterisk pattern. This behavior is defined by the PolicyFile implementation and is critical when deploying applications with strict file system permissions in environments like Java EE or standalone servers.
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 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Java I/O API and Securing Applications — This question tests Java I/O API and Securing Applications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Operations 1 and 2 are allowed; operation 3 is denied. — The Java application is deployed in /opt/app/lib/, so its code base is /opt/app/lib/. The security policy grants read permission for /data/config/*, which matches /data/config/settings.xml (operation 1) but does not match /data/config/subdir/extra.conf because the wildcard * does not descend into subdirectories (operation 3 is denied). Write permission is granted for /logs/*, so /logs/app.log (operation 2) is allowed. Thus, operations 1 and 2 are allowed, and operation 3 is denied.
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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