easyMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: Best describes the difference between a compiler…
Which of the following best describes the difference between a compiler and an interpreter?
⚠ Common exam trap
CompTIA often tests the common misconception that interpreters are faster because they skip the compilation step, but the trap here is confusing the order of translation and execution, leading candidates to reverse the definitions of compiler and interpreter.
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
✓
A compiler translates the entire source code into machine code before execution; an interpreter executes code line by line.
A compiler translates the entire source code into machine code before execution, producing a separate executable. An interpreter translates and executes source code line by line at runtime. Compiled programs generally run faster at execution because translation is done ahead of time. Therefore, option C is correct. Option A confuses development speed (no separate compile step) with execution speed. Option B reverses the two definitions, and option D incorrectly describes when syntax checking occurs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Compiled programs run slower than interpreted programs.
Why it's wrong here
Correct. The development cycle for interpreted programs is often faster because there is no explicit compilation step; code can be written and tested immediately. This is a key distinction tested in CompTIA ITF+.
- ✗
A compiler executes code line by line; an interpreter translates the entire program at once.
Why it's wrong here
Incorrect. This option reverses the definitions: compilers translate the entire program at once (not line by line), and interpreters execute line by line (not the entire program at once).
- ✓
A compiler translates the entire source code into machine code before execution; an interpreter executes code line by line.
Why this is correct
Incorrect. While the description of compiler translation is accurate, interpreters do not need to wait for a full translation step; they can immediately start executing, making the overall process quicker for development.
- ✗
A compiler checks for syntax errors at runtime; an interpreter checks at compile time.
Why it's wrong here
Incorrect. Compilers detect syntax errors at compile time, not at runtime; interpreters detect them as each line is executed, not at compile time.
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