How would you allow device drivers and TSR's to be loaded into Upper Memory Blocks?
Answer: D
Correct answer: DOS=UMB
DOS=UMB in CONFIG.SYS tells DOS to take charge of the upper memory blocks that EMM386 has made available, so that DEVICEHIGH= and LOADHIGH then have somewhere to put drivers and TSRs. Without it those two commands silently load low.
Please log in or register to report this question.
While working with MS-DOS, which command is used to restore only those files modified since the last backup, from the drive A to the currently logged drive or directory?
Answer: B
Correct answer: RESTORE A: *.*/M
The /M switch restores only those files that have been modified since they were backed up - the ones whose disk copy differs from the backup - leaving everything else untouched.
Please log in or register to report this question.
Which DOS command will configure a serial printing port?
Answer: B
Correct answer: Mode LPT1=COM1
MODE LPT1=COM1 redirects output sent to the first parallel port so that it goes to the first serial port instead, which is what allows a program that only knows how to print to LPT1 to drive a serial printer. The serial line’s speed and parity are set with a separate MODE command.
Please log in or register to report this question.
Which command below will instruct DOS to do a "quick format".
Answer: B
Correct answer: FORMAT A: /Q
/Q performs a quick format: it rewrites the file allocation table and root directory but does not re-create the sector structure or scan for bad sectors. It is fast, and it works only on a disk that has already been formatted once.
Please log in or register to report this question.
While working with MS-DOS, which command is used to display a list of deleted files that DOS can undelete?
Answer: C
Correct answer: UNDELETE/LIST
UNDELETE /LIST shows which deleted files DOS can still recover, without recovering any of them - a look before you commit. UNDELETE with a file specification does the recovering.
Please log in or register to report this question.
Which file executes commands in DOS?
Answer: C
Correct answer: COMMAND.COM
COMMAND.COM is the command interpreter: it displays the prompt, reads what is typed, executes the internal commands itself, and loads and runs the external ones. IO.SYS and MSDOS.SYS are the two hidden system files beneath it.
Please log in or register to report this question.
What switch would you use to view Smartdrive statistics?
Answer: C
Correct answer: /s
SMARTDRV /S displays the cache statistics - the size of the cache, and the number of hits and misses - from which the hit rate can be judged. The other switches configure the cache rather than report on it.
Please log in or register to report this question.
Each time you turn the power switch on, which control files will the computer check?
Answer: C
Correct answer: COMMAND.COM, IO.SYS, MSDOS.SYS
Booting DOS needs three files: IO.SYS and MSDOS.SYS, the two hidden system files loaded by the boot record, and COMMAND.COM, the command interpreter loaded last. A disk lacking any of them is not bootable.
Please log in or register to report this question.
While working with MS-DOS, which command is used to combine FILE1 plus FILE2 into new file named FILE3?
Answer: B
Correct answer: COPY FILE1+FILE2 FILE3
COPY concatenates when its sources are joined with +: COPY FILE1+FILE2 FILE3 reads the two in turn and writes them one after the other into FILE3. The sources come first and the destination last, as in any COPY.
Please log in or register to report this question.
Which of the following DOS commands is used to display or set the date of your computer's internal clock?
Answer: C
Correct answer: DATE
DATE displays the current date and offers to change it; typed with a date it sets the clock directly. Its companion TIME does the same for the time of day. VER reports the DOS version, and HOUR and DAY are not DOS commands.
Please log in or register to report this question.
