Electrical Online Test 34

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Attempt Free Electrical Online Test 34 Here. Read The Important Electrical MCQ From Below.

1) MS DOS was developed in

a. 1991
b. 1984
c. 1971
d. 1961
Ans. b. 1984

2) chkdsk can be used to find ou

a. Disk’s bad portion
b. Occupied space
c. free space
d. All of these
Ans. d. All of these

3) Some External DOS commands are

a. Copy, edit, sys, format
b. Edit, sys, chkdsk
c. chkdks, prompt, date
d. Sys, ver, vol
Ans. b. Edit, sys, chkdsk

4) The vol command in DOS is used to

a. See the values of list
b. See the verity of language
c. see the disk volume label
d. See the volume of largest
Ans. c. see the disk volume label

5) CHKDSK command is used to

a. analyze the hard disk errors
b. diagnose the hard dis errors
c. report the status of files on disk
d. All of these
Ans. d. All of these

Electrical Online Test 34

6) restore command in DOS is used to

a. Restore files from disks made using backup command of DOS
b. restore files which are deleted
c. Restore files from recycle bin
d. Restore files which are deleted recently
Ans. a. Restore files from disks made using backup command of DOS

7) Internal commands in DOS are

a. cls,rd, label
b. Dir,ren,sys
c. time, type, dir
d. del, diskcopy, label
Ans. c. time, type, dir

8) Which command in DOS is used to change the name of the file

a. ren
b. Rename
c. both of the above
d. None of these
Ans. c. both of the above

9) DOS command used to copy a file named ldce.doc from drive c: to drive a:

a. copy ldce.doc to a:
b. Copy c:\ldce.doc a:
c. Copy c: a:
d. Copy ldce a: c:
Ans. b. Copy c:\ldce.doc a:

10) Copy the hidden system files to a disk the following command is used in DOS

a. copy
b. ren
c. sys
d. diskcopy
Ans. c. sys

Electrical Online Test 34

11) Which combination of keys is to be pressed to quit a file without saving in DOS

a. Ctrl+a
b. ctrl+b
c. Ctrl+c
d. Ctrl+d
Ans. c. Ctrl+c

12) While working with DOS, which key can be used to repeat the previous command?

a. F3
b. F1
c. F7
d. F9
Ans. a. F3

13) copy and xcopy are same in the sense of the following answer:-

a. Both are internal commands of DOS
b. Both are external commands of DOS
c. Both can be used to copy file or a group of files
d. None of these
Ans. c. Both can be used to copy file or a group of files

14) diskcopy command in DOS is used accomplish the following task

a. Copy a file
b. copy contents of one floppy to another
c. copy contents of CD ROM to another
d. All of these
Ans. b. copy contents of one floppy to another

15) dir command is used to

a. display the list of files in a directory
b. Display contents of files in a directory
c. Display type of files in a sub directory
d. All of these
Ans. a. display the list of files in a directory

Electrical Online Test 34

16) Which of the following batch file is run while booting in MS DOS

a. auto-exec.bat
b. auto-batch.bat
c. auto-executive.bat
d. Auto.bat
Ans. a. auto-exec.bat

17) Maximum length of DOS command including parameters

a. 26 characters
b. 87 characters
c. 127characters
d. None of these
Ans. c. 127characters

18) FAT stands for

a. File Accomodation Table
b. File Allocation Table
c. File Activity Table
d. File Advantage Table
Ans. b. File Allocation Table

19) format command in DOS is used to

a. Prepare a blank disk
b. Create new blank disk from a used one
c. Both of these
d. none of these
Ans. c. Both of these

20) xcopy command in DOS can copy

a. individual files or a group of files
b. directories including their sub directories
c. to desk of a different capacity
d. All of these
Ans. d. All of these

Electrical Online Test 34

21) Which command in DOS is used to clear the screen and display the operating system prompt on the first line of the screen/display?

a. cd
b. md
c. Clrsc
d. cls
Ans. d. cls

22) Which of the following command is used to copy files in DOS

a. copy
b. disc copy
c. type
d. All of these
Ans. a. copy

Electrical Online Test 34

23) The deleted file in DOS can be recovered if you use the following command

a. Donotdelete
b. nodelete
c. Undelete
d. Ondelete
Ans. c. Undelete

24) del command in DOS is used to

a. delete files
b. Delete directory
c. delete labels
d. delete contents of a file
Ans. a. delete files

25) Which command in DOS is used to look at the sub directory structure

a. tree
b. List
c. Subdir
d. subtree
Ans. a. tree

Electrical Online Test 34