Define the role of e-mail in business and suggest three possible advantages and disadvantages of using e-mail.

1. Outline three main business uses of the internet and describe why these uses may be essential for business activity in the twenty-first century.

2. Define the term emoticon and describe how emoticons may reduce misunderstanding that often occurs within e-mail messages.

1. Discuss why one of the most important layers to the end user is the human-computer interface layer within a protocol stack.

2.  Define the role of e-mail in business and suggest three possible advantages and disadvantages of using e-mail.

3. Explain what is meant by mobile computing and describe the main characteristics of mobile computin