The correct answer identifies that the short data type can store values from -32,768 to 32,767, which is true because short is a 16-bit signed integer in Java, giving it a range of -2^15 to 2^15-1. This concept directly tests your understanding of primitive data types ranges, a core topic on the Oracle Java Foundations 1Z0-811 exam. The exam often presents traps like confusing char with ASCII-only storage or assuming boolean occupies a single bit, so you must memorize the exact bit widths and signed versus unsigned distinctions. For quick recall, remember that short’s range mirrors the classic 32K limit, while long spans from -2^63 to 2^63-1, and float sacrifices precision for decimal values. A helpful mnemonic is “Short stops at 32K, long lives large, float fumbles fractions.”
1Z0-811 Primitives, Strings and Operators Practice Question
This 1Z0-811 practice question tests your understanding of primitives, strings and operators. 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 primitive data types in Java?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The long data type can store values from -2^63 to 2^63-1.
Option A and E are correct. The long data type ranges from -2^63 to 2^63-1, and the short data type ranges from -32,768 to 32,767. Option B is false because char stores Unicode characters, not just ASCII. Option C is false because float is not precise for decimal numbers. Option D is false because the boolean data type size is not strictly defined and typically is not a single bit.
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 long data type can store values from -2^63 to 2^63-1.
Why this is correct
Correct: long is 64-bit signed two's complement.
Related concept
Read the scenario before looking for a memorised answer.
✓
The short data type can store values from -32,768 to 32,767.
Why this is correct
Correct: short is 16-bit signed two's complement.
Related concept
Read the scenario before looking for a memorised answer.
✗
The float data type is 32-bit and can represent decimal numbers precisely.
Why it's wrong here
False: float is not precise; use double or BigDecimal for precision.
✗
The boolean data type has a size of 1 bit.
Why it's wrong here
False: boolean size is JVM-dependent and typically 1 byte.
✗
The char data type can store only ASCII characters.
Why it's wrong here
False: char stores Unicode characters (0 to 65535).
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 1Z0-811 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 1Z0-811 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.
Primitives, Strings and Operators — This question tests Primitives, Strings and Operators — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The long data type can store values from -2^63 to 2^63-1. — Option A and E are correct. The long data type ranges from -2^63 to 2^63-1, and the short data type ranges from -32,768 to 32,767. Option B is false because char stores Unicode characters, not just ASCII. Option C is false because float is not precise for decimal numbers. Option D is false because the boolean data type size is not strictly defined and typically is not a single bit.
What should I do if I get this 1Z0-811 question wrong?
Identify which 1Z0-811 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.
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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