mainly spinlock used in threads to avoid synchronization,where as semaphore and mutex used to avoid process synchronization.
1.spinlock is something like polling.it spins for resouce until aloocated resouce releases.
2.binary semaphore and mutex are similar.
The file /proc/execdomains lists the a) execution domains currently supported by the linux kernel b) all domains of all processes c) registered ISA DMA channel in use d) none of the mentioned
The file /proc/kcore displays a size of a) RAM b) RAM plus 4 KB c) RAM plus 8 KB d) none of the mentioned
The /sbin/sysctl command is used to a) view kernel settings in the /proc/sys/ directory b) set kernel settings in the /proc/sys/ directory c) automate kernel settings in the /proc/sys/ directory d) all of the mentioned
What is /proc/self? a) a directory b) link to the currently running process c) it allows a process to look itself without having to know its process ID d) all of the mentioned
The file /proc version shows the version of ______ used in the system. a) kernel b) gcc c) both (a) and (b) d) none of the mentioned
The file /proc/locks displays the file currently locked by the a) kernel b) user c) superuser d) none of the mentioned
/bin/dmesg picks the messages from a) /proc/kmesg b) /sbin/klogd c) both (a) and (b) d) none of the mentioned
Which file contains the boot options passed to the kernel? a) /proc/cmdline b) /proc/root c) /proc/boot d) none of the mentioned
Which one of the following file contains the environment for the process? a) /proc/[PID]/environ b) /proc/[PID]/env c) /proc/[PID]/path d) none of the mentioned
What is /bin/sh? a) bourne shell b) hard or symbolic link to the real shell command c) bash shell d) both (b) and (c)
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