Which extension is given to a word document by default?

Appeared in: RRB Staff Nurse Kolkata-2015

Explanation

The .doc extension is the default file format for documents created in Microsoft Word versions prior to 2007.
Although newer versions of Word use the .docx format, .doc remains a correct and standard identifier for Word files, making it the best choice among the given options.
DOC matches the defining clue or classification criterion in the stem.
Supporting mechanism: The option aligns with the governing rule, pattern, sequence, classification, or exam logic being tested.
Key differentiator: It fits the one fact that separates the correct response from the closest distractor.

Option A: .COM is an extension for an executable command file, a type of program, not a document file.
Option B: .EXT is a generic abbreviation for the word 'extension' itself, not a specific file type used by any program.
Option D: This option is incorrect because .DOC is a valid and correct default extension for Word documents.

Visual 1: Infographic: A visual chart showing the icons and file extensions for common Microsoft Office applications (Word, Excel, PowerPoint) and other common file types (PDF, JPG, MP3).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Default file extensions for Microsoft Office applications as background academic context rather than a clinical decision trigger.
Basic computer literacy, including understanding file types, is essential for nurses to manage electronic health records (EHR), access hospital protocols, and use various healthcare software applications effectively.
Nurses often handle reports, patient education materials, and administrative documents, which may come in different formats like .doc, .pdf, or .xls.
What if? If a nurse receives a file with a .xlsx extension, they should know to open it with a spreadsheet program like Microsoft Excel, as it likely contains tabulated data (e.g., patient census, lab value trends), not a text-based report.

How to Approach the Question

This is a factual recall question about basic computer knowledge.
First, identify the core of the question: the default file extension for a 'word document'.
Evaluate each option based on your knowledge of common file extensions.
Recall that .doc is the classic extension for Microsoft Word.
Eliminate .com, as it's an executable file, and .ext, which is just a generic term.
Since .doc is a correct option, the 'None of these' option is also incorrect. Select the most accurate choice available.

Concept Tested & Keywords

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