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Dear candidates you will find MCQ questions of Operating System Architecture here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.17K Points
Coach

Q. 151) what is use of ls command ?

(A) to list names and attribute of files
(B) to list size of files
(C) to list length of files
(D) none of these
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Mr. Dubey • 51.17K Points
Coach

Q. 152) Access permission can be set to …………

(A) the file owner
(B) a file group
(C) everyone else
(D) all of these
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Mr. Dubey • 51.17K Points
Coach

Q. 153) The Newly created files are ………….. of the file system directory structure.

(A) main nodes
(B) root nodes
(C) leaf nodes
(D) middle nodes
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Mr. Dubey • 51.17K Points
Coach

Q. 154) Unix system treats devices as a ……..

(A) hardware
(B) file
(C) byte
(D) none of these
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Mr. Dubey • 51.17K Points
Coach

Q. 155) Permission mode on newly created file will be……

(A) 0666(octal)
(B) 0666(hexadecimal)
(C) 0999(octal)
(D) 0798(hex)
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Mr. Dubey • 51.17K Points
Coach

Q. 156) Permission mode 0666(octal) means…………

(A) allowing all users acess to file for writing
(B) allowing all users acess to file for reading
(C) restrict to read and write
(D) allowing all users access to file for reading writing
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Mr. Dubey • 51.17K Points
Coach

Q. 157) All system calls return ……..if open or create call fails

(A) -2
(B) 0
(C) 1
(D) -1
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Mr. Dubey • 51.17K Points
Coach

Q. 158) The open and create system calls returns an integer called a ……….

(A) file number
(B) file discriptor
(C) file variable
(D) none of these
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Mr. Dubey • 51.17K Points
Coach

Q. 159) File discriptor programs uses………………...

(A) to delete file
(B) to save file
(C) for subsequent references for file
(D) none of these
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Mr. Dubey • 51.17K Points
Coach

Q. 160) The read system calls return 0 when ………..

(A) it reaches middle of file
(B) it reaches end of the file
(C) file is empty
(D) none of these
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