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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.

Q. 1) What is an internal command in Unix ?

(A) commands that are executed directly by the kernel
(B) commands that are executred directly by the shell
(C) commands that are executed directly by shell and kernel
(D) commands will have a process id running for it
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Q. 2) What is major device number ?

(A) it is an index to the kernel table that contains the address of all device driver functions known to the system
(B) it is an index to theuser process table that contains the address of all device driver functions known to the system
(C) it is an index to the kernel table that contains the address of all files
(D) it is an index to the kernel table that contains the address of all directories
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Q. 3) The game program,"space travel"for GECOS system was written in

(A) basic
(B) cobol
(C) fortran
(D) vb
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Q. 4) What does OSS stand for

(A) open system software
(B) original source software
(C) open source software
(D) original system server
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Q. 5) Which of the following is used to write disk block images from memory to disk

(A) stty
(B) cmd
(C) sync
(D) clri
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Q. 6) How many line are there are in the result of date command

(A) three
(B) one
(C) two
(D) five
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Q. 7) While providing a text processing system for the patent department at bell labs,the unix system was moved to in 1971

(A) pdp-6
(B) pdp-7
(C) pdp-9
(D) pdp-11
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Q. 8) What is minor device number           

(A) it tells the device driver function what actual physical device it is talking
(B) it tells the device driver functionwhat actual physiacl device it is talking to and i/0 buffernig scheme to be used for reading
(C) it tells the device driver functionwhat actual physical device it is talking to and i/0 buffernig scheme to be used for writing
(D) it tells the device driver functionwhat actual physiacl device it is talking to and i/0 buffernig scheme to be used for data transfer
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Q. 9) What is directory hierarchy ?

(A) it is an organizational structure in which directories can contain files and other sub directories
(B) it is an organizational structure in which directories can contain only files
(C) it is an organizational structure in which directories can contain only sub directories
(D) it is an organizational structure in which directory contains only one level
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Q. 10) what is the relationship of a filename to its inode

(A) one to one
(B) one to many
(C) many to one
(D) many to many
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