Question

Write the file extension of microsoft word document file

Answer 1

.doc

Extension is ".docx" (for word)

There is one more extension,
".docm"

Answer 2

File extension is a group of letters that determines or signifies the type of file it is. It can also be defined as an identifier, written as a suffix after the given file name and this determines the nature or type of the computer file.

For example: .gfx is used for graphics files, .txt is used for plain text files, .sb is used for Small Basics files or Scratch files, etc.

Similarly, for a file of Microsoft Word Document, the extension most often used is .docx