Question

Which URL can be written in both lowercase and uppercase

Answer 1

Answer:

I’m not 100% sure about whether caps matter specifically on Linux servers running Apache, but almost all systems that handle email are case insensitive and allow you to type the email address as [email protected] or [email protected]. The local part of the email address (before the @ symbol) is supposed to be case sensitive, but email providers realized quickly that there was too much confusion and frustration, so they switched to case insensitive.

Explanation: