At Palais des Nations in Geneva, how many countries

An attachment in an E-mail can be: 

Digital photos 

Documents 

What does the "@" symbol in an email signify?

Which of the following is a valid e-mail address? 

Which of the following protocol is not related to E-mail

Which encryption algorithm is commonly used for securing email communication?

Which of the following in not valid about an email address?

 Which protocol is used to send emails over the internet?

Warm booting when a computer is restarted by pressing the combination of Which Key?

When sending an e-mail, the _____ line describes the contents of the message.

 Which of the following software is used to create text documents?