Computer Science - Disk Operating System
Computer Science - Disk Operating System
21. You suspect a virus has entered your computer. What will not be affected by the virus?
- CMOS
- Boot sector
- Floppy disks
- Program files
22. What is a TSR?
- test status request
- terminate and stay resident program
- take status request
- token set ready
23. What does MSCDEX.EXE do?
- Configures hard drives
- it's a SCSI driver
- BIOS setup
- it's a CD-ROM DOS driver
24. Upper Memory blocks are located where?
- Conventional Memory
- Extended Memory
- Expanded memory
- Reserved Memory
25. Batch files contain a group of MS-DOS commands that are run in successive order. What filename extension identifies batch files?
- COM
- BAT
- EXE
- SYS
26. After upgrading your computer to a new DOS version, an older application displays the error message "Incorrect DOS version". What should you do to run this application?
- Use the DOS+ command
- Use the SETVER command
- Restore the old DOS version
- Contact the application's vendor support line
27. When executed from a bootable hard drive, which command will make a formatted floppy disk bootable?
- COPY C:\DOS\COMMAND.COM A:\
- ATTRIB C:\*.SYS A:\
- XCOPY C:\DOS\*.* A:\
- SYS C: A:
28. While working with MS-DOS, which command is used to specify the colour display, 40 columns and color?
- MODE COLOUR
- MODE/C
- MODE CO40
- MODE CHANGE
29. Which DOS command allows you to compress existing disks and to create new compressed volumes?
- DEFRAG
- DBLSPACE
- SCANDISK
- MSAV
30. The MODE command of MS-DOS is used to
- display information about several types of devices installed in your computer
- provide various types of control over your printers
- make changes of the current display
- All of the above