Question

what is an index file? a a web page that lists all the other files in that directory b a web page that shows the contents of a web server c a file that calls other web pages to display them d a web page that is displayed by default when no filename is specified

Explanation:

To determine the correct answer, we analyze each option:

• Option A: An index file isn't just a list of other files in a directory in the typical sense of a web - related index file.
• Option B: It doesn't show the contents of an entire web server.
• Option C: An index file doesn't call other web pages to display them.
• Option D: By definition, an index file (like index.html) is the web page that is displayed by default when a user accesses a directory on a web server and no specific filename is specified.

Answer:

D. A web page that is displayed by default when no filename is specified