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LINUX SERVER FUNDAMENTAL PRACTICE SET 5

21. Total no of run levels in a Linux system?
(A) 6
(B) 7
(C) 5
(D) 8


22. Which command is used to copy entire directory?
(A) cp r
(B) cp i
(C) cp
(D) none of these


23. Suppose I am in /etc directory and I want to go to my home directory which command should I use?
(A) cd
(B) cd ~
(C) Both A and B
(D) none of these


24. Which special character should be avoided during naming a file?
(A) .(dot)
(B) $
(C) _(underscore)
(D) _(Hyphen)