1. In computer, operating system is important ________
(A) object
(B) program
(C) file system
(D) function
2. To perform an operation in DOS, the user uses a ________
(A) button
(B) nothing
(C) function
(D) command
3. In path, the ________ symbol is used
(A) comma
(B) forward slash
(C) semi colon
(D) back slash
4. In switch, the ________ symbol is used
(A) comma
(B) back slash
(C) forward slash
(D) semi colon
5. The ________ command is used to display current date on Command Prompt
(A) hour
(B) time
(C) second
(D) date
6. The ________ command is used to display current time on Command Prompt
(A) time
(B) date
(C) second
(D) hour
7. The ________ command is used to clear the contents on Command Prompt screen
(A) CD
(B) MD
(C) CLS
(D) CLRSCR
8. The example of internal commands are
(A) CLS, RD, Label
(B) Time, Type, dir
(C) DIR, Ren, Sys
(D) Sys, Diskcopy, Label
9. The example of external commands are
(A) Sys, Diskcopy, Label
(B) DIR, Ren, Sys
(C) Time, Type, dir
(D) CLS, RD, Label
10. ________ is a space in hard disk where users can store and organize files
(A) desktop
(B) directory
(C) recycle bin
(D) none of these
11. In DOS which command is used to copy only files?
(A) All of these
(B) Disk Copy
(C) Type
(D) COPY
12. How many files will be copied after this command: COPY .
(A) three
(B) one
(C) two
(D) all
13. Which wildcard is used for alternative of unlimited characters?
(A) !
(B) *
(C) ?
(D) &
14. DEL command is used to delete
(A) contents of a file
(B) directories
(C) label
(D) files
15. To create new directory ________ command is used
(A) CD
(B) ND
(C) none of these
(D) MD
16. Which command is used to change directory?
(A) MD
(B) ND
(C) CD
(D) none of these
17. File extension of Batch file is
(A) bat
(B) bach
(C) batch
(D) none of these
18. ________ command is used to open DOS Editor
(A) EDIT
(B) Open
(C) DE
(D) Editor
19. The internal commands of DOS are part of ________ file
(A) Command.com
(B) CMD
(C) Command.SYS
(D) none of these
20. After entering a DOS command the ______ key is used to see the command impact
(A) Tab
(B) Enter
(C) Shift
(D) Spacebar