When computer network are joined together they form a bigger network called the​

A WAN can be one large network or can consist of two or more lans connected together. The Internet is the world's largest wan.

Explanation:

since it can be assumed that what aslam is making is a template by compiling all the commonly used excel formatting in several worksheets in an excel document, aslam can choose to save it using the .xltx or .xltm format instead. thus, aslam can distribute the templates he has made to his team members in an easier manner.

the file button then you go to insert tab and click insert hyperlink.