|Que.||Everything below the system call interface and above the physical hardware is known as ______.|
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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) UNIX provides three types of permissions
(b) UNIX provides three sets of permissions
* permission for owner
* permission for group
* permission for others
Which of the above statement/s is/are true?
I. The process table is resident all the time and contain information needed for all processes, even those that are not currently in memory.
II. The user structure is swapped or paged out when its associated process is not in memory, in order not to waste memory on information that is not needed.
Which of the following options is correct with reference to above statements ?
a. $? i. File name of the current script
b. $# ii. List of arguments
c. $0 iii. The number of arguments
d. $* iv. Exit status of last command
a b c d