UNIT -2
COMPUTER HARDWARE AND OPERATING SYSTEM
CHAPTER- 2
DISC OPERATING SYSTEM
1. MS DOS is a ------------------ operating system.
Ans. Single user
2. Interface of MS DOS is ------------------
Ans. Character user interface(CUI)
3. ----------------- command is used to display content of a file.
Ans. TYPE.
4. ------------- command is used to create a directory.
Ans. MKDIR/MD
5. ------------------ command is used to display a directory.
Ans. DIR
6. -------------- command is used to display and set system time.
Ans. TIME.
7. Explain the use of wildcard characters?
A wildcard characters is a special symbol that stands for one or more characters. Many operating systems and applications support wildcard. In DOS, The asterisk(*) is a wild card stands for any combination of letters. The question mark(?) is a wild card characters that stands for any single character.
For example -c*.doc refers to all files that start with letter 'C' and having extension '.doc'.
F?C.txt refers to all files that starts with F, second letter may be any character and third character must be C with extension txt.
8. How can you execute MS DOS Command in Windows 7?
We can execute DOS command in windows using cmd.exe
a. Click on start menu
b. type cmd.exe o search programs and files.
c. press enter key.
