Question

define wildcards and its types

Answer 1

a wildcard is a symbol used to replace and represent one or more character types of wildcard asterisk , question mark ,

Answer 2

It is a symbol that stands for one or more characters. It enables you to select multiple files with a single specification.

Ex: In DOS and Windows, the Asterisk(*) is a wild card that stands for any combination of letters.
 

Hope this helps!