What is a cpsid?

What is the benefit of using a wifi range extender? Which are available for the preview pane? How do you check iball keyboard warranty? What Windows utility gives information about problems and errors that happen over time? Information about the first laptop computer? How do you file names in a filing system? What is a passive security system? What are other types of files that can be imported into Excel Can you list at least one or two more? Where is the snid number on a gateway laptop? How do you charge a laptop without charger? How old do you have to be to have a iPad? Can pictures be stored on a DVD rather than on a CD? How does freeware work? How do you authorize your computer to transfer an app to your iPod touch? How do you use ups for home computer i.e charging and discharging when computer is on? When the paper orientation is portrait do the contents print across the length of the page instead of across the width? Are flash drives damaged by magnets? Why do printers require more maintenance than other peripherals? What is window size? Difference between DOS and Windows XP?