When a thread calls the acquire method, the lock enters the _________ state.

__________ is one of the best known protection mechanisms that is a GCC compiler extension that inserts additional function entry and exit code.

Fill in the blank(s) with the appropriate word(s).

If there are multiple threads at the highest priority level in the Java virtual machine, those threads execute using a(n) ________ scheduling algorithm.

a) FIFO b) round-robin c) SPF d) SRT