SALESFORCE-PD1 Developer Fundamentals Practice Question
Which TWO statements about Apex variables and initialization are true? Choose 2 options.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Every variable in Apex must be explicitly declared with its data type.
Unassigned primitive variables default to null, and variables must be declared with a type before use.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Every variable in Apex must be explicitly declared with its data type.
Why this is correct
Apex is a strongly typed language requiring explicit data type declarations.
- ✓
Unassigned primitive variables are automatically initialized to null.
Why this is correct
Apex assigns null as the default value to uninitialized primitives.
- ✗
Integer variables default to 1 if unassigned.
Why it's wrong here
Unassigned integers default to null, not 1.
- ✗
Apex supports dynamic duck typing without variable declarations.
Why it's wrong here
Apex is strictly statically typed.
- ✗
Boolean variables default to true if unassigned.
Why it's wrong here
Unassigned booleans default to null, not true.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Salesforce exam blueprint
This SALESFORCE-PD1 practice question is part of Courseiva's free Salesforce certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SALESFORCE-PD1 exam.