FC0-U71 Tech Concepts and Terminology Practice Question
Which of the following units represents the largest amount of data?
⚠ Common exam trap
FC0-U71 often tests unit ordering with familiar-sounding terms — the trap is that candidates may confuse the prefixes (kilo, mega, giga, tera) or forget that tera is larger than giga.
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
✓
Terabyte (TB)
A terabyte (TB) is the largest unit among the options, equal to approximately 1,000 gigabytes or 1 trillion bytes (decimal) / 1,099,511,627,776 bytes (binary TiB). The hierarchy from smallest to largest here is kilobyte < megabyte < gigabyte < terabyte, each step being roughly 1,000x (decimal) or 1,024x (binary).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Megabyte (MB)
Why it's wrong here
A megabyte is 1,024 kilobytes, smaller than gigabytes and terabytes. It is tempting because megabytes are the familiar unit for photos, documents and download sizes, but the question asks for the largest unit among the options, which is the terabyte.
- ✓
Terabyte (TB)
Why this is correct
A terabyte equals 1,024 gigabytes, exceeding gigabyte, megabyte and kilobyte, making it the largest unit listed. The axis of difference is the binary order of magnitude: each step multiplies by 1,024, so TB sits three orders above GB.
- ✗
Gigabyte (GB)
Why it's wrong here
A gigabyte is 1,024 megabytes, smaller than the terabyte or petabyte options listed. It is tempting because gigabytes are the everyday unit for disk sizes and memory, so they feel large, but the question asks for the largest unit among the choices.
- ✗
Kilobyte (KB)
Why it's wrong here
A kilobyte is 1,024 bytes, the smallest unit listed, far below megabytes, gigabytes or terabytes. It is tempting because kilobytes appear constantly in file sizes and network speeds, but the question asks which unit represents the largest amount of data.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This FC0-U71 practice question is part of Courseiva's free CompTIA 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 FC0-U71 exam.