What file extension is used to save an MS PowerPoint 2021 presentation?
.pptx
Microsoft Office applications each save their files with a characteristic extension, and since Office 2007 these have used the Open XML format, signalled by the letter x at the end of the extension. This XML-based format stores the document as a compressed package of XML parts, which makes files smaller, more robust against corruption and easier for other programs to read.
For Microsoft PowerPoint 2021, the default extension for a presentation is .pptx, so this is the correct answer. (The letters ppt stand for PowerPoint presentation, and the trailing x marks the modern Open XML format that replaced the older binary .ppt used up to Office 2003.)
The other extensions belong to different applications and file types:
- .xlsx — an Excel workbook (spreadsheet), not a slideshow.
- .docx — a Word document (word processing), used for letters and reports.
- .pdf — Portable Document Format, a fixed-layout format from Adobe used for sharing/printing; PowerPoint can export to PDF, but that is not the native format in which a presentation is saved.
Because none of these three is the working format PowerPoint uses to store an editable presentation, .pptx is the only correct choice.
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Important Questions from Microsoft Office
Considering the content of the first cell of a worksheet as 10, the value of the Excel formula = $A$1/4 is:
In MS-PowerPoint, slide show options available to the presenter include all of the following, except for:
In a spreadsheet, one function inside another is called:
Which of the following alignment is applied to the below text?
[Type a quote from the document or the
summary of an interesting point. You can
position the text box anywhere in the
document. Use the Text Box Tolls tab to
change the formatting of the pull quote text
box.]
In MS Excel, the cell reference for a range of cells that starts in cell B1 and goes over to column G and down to row 10 is:
