The signal( ) operation in the example using JAVA condition variables ensures that the thread with the thread number turn
A) that is blocked on await( ) is unblocked.
B) that may be blocked on await( ) is unblocked.
C) does not block on await( ) even if hasn't yet called this function.
D) blocks on await( ) if it hasn't yet called this function.

Question

Quizplus · Accepted Answer

The signal() operation in Java's condition variables is used to unblock one of potentially several threads that are waiting on a condition (i.e., blocked on await()). It does not guarantee which thread will be unblocked if multiple threads are waiting, hence the correct answer is that it unblocks a thread that "may be" blocked on await().

The Signal( ) Operation in the Example Using JAVA Condition