Understanding Different File Types

What is the file extension for a Microsoft Word document?

• .pdf

• .docx

• .txt

• .jpg

Answer explanation

The correct file extension for a Microsoft Word document is .docx. This format is used for documents created in Microsoft Word 2007 and later, while .pdf is for portable documents, .txt is for plain text, and .jpg is for images.

Which of the following is a common image file type?

• .mp3

• .png

• .wav

• .avi

Answer explanation

.png is a common image file type used for graphics and images, while .mp3 and .wav are audio file types, and .avi is a video file type. Therefore, .png is the correct answer.

What does the file extension .mp3 represent?

• Video file

• Image file

• Audio file

• Document file

Answer explanation

The .mp3 file extension represents an audio file format commonly used for storing music and other audio content. It is not associated with video, images, or documents, making 'Audio file' the correct choice.

Which file format is typically used for high-quality video files?

• .mp4

• .gif

• .bmp

• .txt

Answer explanation

.mp4 is a widely used format for high-quality video files, supporting various codecs and resolutions. In contrast, .gif is for animated images, .bmp is a bitmap image format, and .txt is for plain text.

What is the file extension for a Portable Document Format?

• .doc

• .pdf

• .xls

• .ppt

Answer explanation

The Portable Document Format is commonly known by its file extension .pdf. Other options like .doc, .xls, and .ppt represent different file types, such as Word documents, Excel spreadsheets, and PowerPoint presentations, respectively.

Which of the following is a lossless image file format?

• .jpeg

• .bmp

• .gif

• .tiff

Answer explanation

.tiff is a lossless image format, meaning it retains all image data without compression loss. In contrast, .jpeg uses lossy compression, while .gif and .bmp can also be lossy or have limitations in color depth.

What type of file is .wav?

• Image

• Audio

• Video

• Document

Answer explanation

.wav files are audio file formats used for storing waveform data. They are commonly used for high-quality audio playback, making 'Audio' the correct choice among the options provided.

Which file type is commonly used for animated images?

• .png

• .gif

• .mp3

• .docx

Answer explanation

.gif is the correct choice as it supports animation, allowing multiple frames to be displayed in sequence. In contrast, .png is for static images, .mp3 is an audio format, and .docx is a document format.

What is the file extension for a Microsoft Excel spreadsheet?

• .pptx

• .xlsx

• .pdf

• .jpg

Answer explanation

The correct file extension for a Microsoft Excel spreadsheet is .xlsx. This format is used for Excel files created in versions 2007 and later, while .pptx is for PowerPoint, .pdf is for documents, and .jpg is for images.

Which of the following is a video file format?

• .avi

• .bmp

• .mp3

• .doc

Answer explanation

.avi is a video file format used for storing video and audio data. In contrast, .bmp is an image format, .mp3 is an audio format, and .doc is a document format. Therefore, .avi is the correct choice.