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


Correct Answer: A. CMOS

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


Correct Answer: B. terminate and stay resident program

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


Correct Answer: D. it’s a CD-ROM DOS driver

24. Upper Memory blocks are located where?

A. Conventional Memory
B. Extended Memory
C. Expanded memory
D. Reserved Memory
E. None of the above


Correct Answer: D. Reserved Memory

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


Correct Answer: B. BAT

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