Linux Systems Question:

System call can be implemented using which assembly instruction(s) on x86 processors?
a) int 0×80
b) sysenter
c) both a & b
d) None

Linux OS Systems Interview Question
Linux OS Systems Interview Question

Answer:

c) both a & b


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Runlevel system command is used for?
a) getting the present and previous runlevel of the system
b) setting the runlevel attribute of the system in the inittab file
c) can be used to restart or reboot the system
d) all of the above		Which of the following exec call is a system call?
a) execl
b) execlp
c) execve
d) execvp