2.  Identify problems that can occur if hardware is not properly maintained.  Identify routine maintenance that can be preformed by users.  Identify maintenance that should be preformed by experienced professionals.

4.  You should check and clean the keyboard periodically.  A mouse with a ball can be difficult to move if the rollers are clogged.

5.  Cleaning a printer helps prolong the printers life.  Never spray an aerosol directly on the printer.  Wear latex gloves while cleaning a printer.

6.  One way to measure a computer’s power is by its capacity to remember.  Data stored in RAM is temporary.  If RAM fills up, then the processors continually goes to the hard drive to replace old data.

7.  Disk Defragmentation occurs when a piece of data is broke up into many pieces.  The sectors are stored in blocks of nonadjacent clusters, thus creating fragmented files.

8.  Holding area for files.  Contains files that have been deleted from the hard disk.  To empty the recycle bin right click the icon and click empty recycle bin.

9.  To free memory for other programs.  To act as a safety net to prevent data loss.  For printing.

10.  A cookies is a small text file that a web site uses to identify a specific computer.  Cookies are not a threat to your computers security.

11. The following should be done by a computer professional  Replacing the power supply.  Replacing the processor.  Replacing or adding RAM

12.  The security of computer network is challenged everyday by hackers and virus attacks.  People create computer viruses and infect other computers.