FC0-U71 Applications and Software Practice Question
A user saves a document as 'report.docx'. Based on the file extension, what type of file is it?
⚠ Common exam trap
FC0-U71 often tests the association between common file extensions and their corresponding application types, so candidates must memorize standard extensions like .docx for Word, .xlsx for Excel, and .pptx for PowerPoint.
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
✓
Word processing document
The .docx extension is the standard file format for Microsoft Word documents, which are word processing files. It indicates a document created in a word processor, containing formatted text, images, and other elements. Therefore, 'report.docx' is a word processing document.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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PDF file
Why it's wrong here
The .docx extension denotes an Office Open XML word-processing document, not PDF. PDF is tempting because both are common document formats, but PDF files carry a .pdf extension; .docx would be the correct choice only if the question asked about a portable, fixed-layout document.
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Presentation
Why it's wrong here
The .docx extension denotes a word-processing document, while presentations use .pptx. Presentation is tempting because Word documents can contain slides-like content, but the extension maps to Word; .pptx would be the correct choice only if the filename ended that way.
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Spreadsheet
Why it's wrong here
The .docx extension identifies a word-processing document, whereas spreadsheets use .xlsx. Spreadsheet is tempting because .docx files can embed tables, but the extension itself maps to Word, so .xlsx would be correct only if the filename ended in that extension.
- ✓
Word processing document
Why this is correct
The .docx extension identifies an Office Open XML word processing document, the default format produced by Microsoft Word. Other extensions map differently: .xlsx denotes spreadsheets, .pptx presentations and .pdf portable documents, so the extension alone determines the file type.
About these practice questions
Courseiva writes every FC0-U71 question from scratch — 988 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
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.