Homework pgs 272-285 4RQs

1) Give three general reasons for the importance of computer networking.

1. Hardware: enable people to share comp hardware resources, reduce costs, and make it possible for more people to take better advantage of powerful comp equipment
2. Software: enable people toshare data and software programs increasing efficiency and productivity
3. People:enable people to work together or colloborate in ways that are otherwise difficult or impossible

2) How do the three general reasons listed in Question 1 relate specifically to LANs
     A software in an LAN can be seen when a hub broadcasts messages to all devices connected on the network ; a switch transmits data to only the destination node. People can be seen when using MAN it hhelps employees keep linked even if they're far away. A hardware can be seen in wireless network connections for small business, especially when constantly on the move.
3) How do the three general reasons listed in Question 1 relate specifically to WANs
      Software: "Data is transmitted long-distance between networks on a collection of common pathways."
      Hardware: "Mesh networks are an alternative to today's networks that rely on centralized routers."
      People: "Most WANS are private operations designed to link geographically dispersed corporate or government offices."

4) What is the difference between e-mail and instant messaging systems?
                 The difference between e-mail and IM is that email does not need both the sender and reciever to be on at the same time like IM. With an email the message just goes to an inbox that waits for you to check it but with IM it is sent directly to the person since two people have to be on for them to IM.