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21. You suspect a virus has entered your computer. What will not be affected by the virus?
A. CMOS
B. Boot sector
C. Floppy disks
D. Program files
E. None of the above
22. What is a TSR?
A. test status request
B. terminate and stay resident program
C. take status request
D. token set ready
E. token steady route
23. What does MSCDEX.EXE do?
A. Configures hard drives
B. it’s a SCSI driver
C. BIOS setup
D. it’s a CD-ROM DOS driver
E. None of the above
24. Upper Memory blocks are located where?
A. Conventional Memory
B. Extended Memory
C. Expanded memory
D. Reserved Memory
E. None of the above
25. Batch files contain a group of MS-DOS commands that are run in successive order. What filename extension identifies batch files?
A. COM
B. BAT
C. EXE
D. SYS
E. None of the above
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