UGC-NET | UGC NET CS 2016 July – III | Question 69

In Unix, files can be protected by assigning each one a 9-bit mode called rights bits. Now, consider the following two statements:
I. A mode of 641 (octal) means that the owner can read and write the file, other members of the owner’s group can read it, and users can execute only.
II. A mode of 100 (octal) allows the owner to execute the file, but prohibits all other access.
Which of the following options is correct with reference to above statements ?
(A) Only I is correct.
(B) Only II is correct.
(C) Both I and II are correct.
(D) Both I and II are incorrect.


Answer: (C)

Explanation: In Unix:

• Files can be protected by assigning each one a 9-bit mode called rights bits.
• A mode of 641 (octal) means that the owner can read and write the file, other members of the owner’s group can read it, and users can execute only.
• A mode of 100 (octal) allows the owner to execute the file, but prohibits all other access.

Both statement are correct regarding to UNIX.
So, option (C) is correct.

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