______ waits occur when a worker requests access to a resource that is not available because the resource is being used by some other worker or is not yet available.

______ waits occur when a worker requests access to a resource that is

1.	______ waits occur when a worker requests access to a resource that is not available because the resource is being used by some other worker or is not yet available.
A.	Resource
B.	Queue
C.	Lock
D.	External
Answer» B. Queue