Sharing optical drives ........................................................................................................ 74
9 Security .......................................................................................................................................................... 75
Protecting the computer ..................................................................................................................... 75
Using passwords ................................................................................................................................ 76
Using antivirus software ..................................................................................................................... 82
Using firewall software ....................................................................................................................... 83
10 Maintenance ................................................................................................................................................ 85
Cleaning your computer ..................................................................................................................... 87
Cleaning products .............................................................................................................. 87
Cleaning procedures .......................................................................................................... 88
11 Backup and recovery .................................................................................................................................. 90
Backing up your information ............................................................................................................... 90
Cleaning the display .......................................................................................... 88
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