The correct answer is that the Arrays class provides a method to convert an array to a List, specifically through the static `Arrays.asList()` method, which returns a fixed-size list backed by the original array. This is true because the `java.util.Arrays` utility class is designed to offer a collection of static helper methods for common array operations, including sorting, searching, filling, and conversion. On the Oracle Java Foundations 1Z0-811 exam, this concept tests your understanding of the Arrays utility class methods and how they bridge the gap between arrays and the Java Collections Framework. A common trap is confusing `asList()` with methods that create a fully modifiable list—remember that the returned list does not support structural changes like `add()` or `remove()`. Another true statement is that the `Arrays.fill()` method can assign a single value to every element or a specified range within an array, working for both primitive and object arrays. For the exam, a useful memory tip is: "Fill fills, asList lists, and both are static in the Arrays class."
1Z0-811 Arrays and Methods Practice Question
This 1Z0-811 practice question tests your understanding of arrays and methods. 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 the Arrays class are true? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The Arrays class provides a method to fill an array with a specific value.
Option B is correct because the `Arrays.fill()` method allows you to assign a specific value to every element of an array, or to a specified range within the array. This is a static utility method provided by the `java.util.Arrays` class, and it works for both primitive and object arrays.
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 Arrays class provides a method to sort only arrays of primitive types.
Why it's wrong here
sort() works on both primitive and object arrays.
✓
The Arrays class provides a method to fill an array with a specific value.
Why this is correct
Arrays.fill() sets all elements to the specified value.
Related concept
Read the scenario before looking for a memorised answer.
✗
The Arrays class provides a method to perform binary search on any array.
Why it's wrong here
binarySearch requires a sorted array; 'any array' is not accurate.
✗
The Arrays class provides a method to deep copy an array.
Why it's wrong here
Arrays.copyOf() performs shallow copy, not deep copy.
✓
The Arrays class provides a method to convert an array to a List.
Why this is correct
Arrays.asList() returns a List backed by the array.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that `Arrays.binarySearch()` works on any array, but it requires a sorted array; also, candidates may confuse `Arrays.copyOf()` with a deep copy, but it only performs a shallow copy.
Detailed technical explanation
How to think about this question
The `Arrays.fill()` method internally uses a loop to set each element, which is efficient for small to medium arrays but can be slower for very large arrays compared to `System.arraycopy()`. For object arrays, `fill()` assigns the same reference to all elements, so modifying the object through one reference affects all positions—a common pitfall. The `Arrays.asList()` method (option E) returns a fixed-size list backed by the original array, meaning changes to the list reflect on the array, and it does not support `add()` or `remove()` operations.
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 1Z0-811 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.
Arrays and Methods — This question tests Arrays and Methods — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The Arrays class provides a method to fill an array with a specific value. — Option B is correct because the `Arrays.fill()` method allows you to assign a specific value to every element of an array, or to a specified range within the array. This is a static utility method provided by the `java.util.Arrays` class, and it works for both primitive and object arrays.
What should I do if I get this 1Z0-811 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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