If one doesn't want anyone else to read or write to a file named datfile, except through a program in a file filex , then he may use

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Mr. Dubey • 51.43K Points
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Q.) If one doesn't want anyone else to read or write to a file named datfile, except through a program in a file filex , then he may use

(A) chmod u+s filex ; chmod go_rw datfile

(B) chmod 4711 filex ; chmod go_rw datfile

(C) chmod 4711 datfile ; chmod go_rw filex

(D) both (a) and (b)

Correct answer : Option (D) - both (a) and (b)

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