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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. 301) A user executes the following command successfully:$ chmod +x file1.txt Which of the following is true of the output of this command?

(A) he command results in adding execute permission to the user who ran this command
(B) the command results in adding execute permission for the owner of the file
(C) the command results in an error since the file is not an executable file
(D) the command results in adding execute permission for all users (i.e., user,group & others)
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Mr. Dubey • 51.17K Points
Coach

Q. 302) What does chmod +t do?

(A) wrong syntax
(B) set effective userid for filename
(C) set effective groupid for filename
(D) set the sticky bit
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Mr. Dubey • 51.17K Points
Coach

Q. 303) Which of the following umask settings doesn’t allow execute permission to be set by default on directory files

(A) 222
(B) 111
(C) 0
(D) 444
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Mr. Dubey • 51.17K Points
Coach

Q. 304) Which of the following umask settings allow execute permission to be set by default on regular files

(A) 222
(B) 111
(C) 0
(D) none of the given choices
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Mr. Dubey • 51.17K Points
Coach

Q. 305) The command chmod 4777 a.out

(A) will set the suid bit of a.out
(B) will set the suid bit of a.out only if the command is issued by root
(C) is not a valid command
(D) will set the sticky bit of a.out
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Mr. Dubey • 51.17K Points
Coach

Q. 306) If a file is removed in Unix using ‘rm’ then

(A) the file can be recovered by a normal user
(B) the file cannot be recovered by a user
(C) the file can be fully recovered provided the sytem is not rebooted
(D) the file will be moved to /lost+found directory and can be recovered only by administrator’s
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Mr. Dubey • 51.17K Points
Coach

Q. 307) When mv f1 f2 is executed which file’s inode is freed?

(A) f1
(B) f2
(C) new inode will be used
(D) new inode will be used
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Mr. Dubey • 51.17K Points
Coach

Q. 308) . The file permission 764 means:

(A) every one can read, group can execute only and the owner can read and write
(B) every one can read and write, but owner alone can execute
(C) every one can read, group including owner can write, owner alone can execute
(D) every one can read and write and execute
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Mr. Dubey • 51.17K Points
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Q. 309) When you use the ln command, which of the following occurs?

(A) a file is created that points to an existing file
(B) a file is created that is a copy of an existing file
(C) a file is moved from one location to another
(D) a file is renamed
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Mr. Dubey • 51.17K Points
Coach

Q. 310) srwxr-xrw- is a

(A) internet socket file
(B) unix domain socket file
(C) symbolic link
(D) shared file
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