If you connect two PCs using a point-to-point link, what are the issues involved in providing various applications such as file transfer, chat, and e-mail? When you connect three or more PCs in a...

If you connect two PCs using a point-to-point link, what are the issues involved in providing various applications such as file transfer, chat, and e-mail? When you connect three or more PCs in a network (as a local area network), list the additional issues involved for providing the applications in Question 3.