Malwarehasbeendetectedandremovedonacustomercomputerseveraltimesinashortperiodoftime.WhichofthefollowingwillBESThelppreventfutureoccurrences?（）
A. Defragmenttheharddrive
B. Discusssafeweb-browsinghabitswiththecustomer
C. Deletetemporaryfiles,cookiesandbrowserhistory
D. Installanti-virussoftwarewhichusesmanualupdates
Whichofthesearesymptomsofmalwareonacomputer?（）(SelectTWO).
A. Harddriveandnetworkactivityishigherwhenthecomputerisidle
B. CD-ROMejectsunexpectedlyfromthecomputer
C. Webbrowseraccessesunexpectedwebsites
D. Printsfromthecomputerhaverandomcharactersandsymbolsinsteadoftext
E. Themonitorhasapermanentimageburnedintothedisplay
WhatinformationdoOSPFhellopacketscontain?（）
A
B
C
D
E
AWindowsOShasfailedtoloadafterasuccessfulpoweronselftest.Whichofthefollowingstepswillhelptroubleshoottheproblem?（）
A. ChangethetimeanddateintheBIO
B. Replacethekeyboard.
Checkformediaintheopticaldrive.
D. AddmoreRA
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