1.  An incremental backup should be used every day to backup all your data.

2.  If your network uses only hubs, replacing the hubs with a switch can dramatically improve total available bandwidth of your network.

3.  A switch will increase your network speed even if everyone is trying to access the same resource, ie printer or server.

        4.  To connect multiple users to in internet all that is required is a Internet connection and a hub.

5.  Who do you call to answer all your computer questions?