Assuming that the CountDown class extends the Thread class, how many threads are used to run this program?

a.	1	c.	3
b.	2	d.	4

Which of the following situations would indicate that a method does not need to be synchronized?

a.	The method doesnt accept parameters.
b.	The method doesnt have a return value.
c.	The method contains only a single Java statement.
d.	The method will never be called by more than one thread.

Which of the following statements is true when a method specifies the synchronized keyword?

a.	The entire object will be locked whenever any thread executes the method, so even unsynchronized methods are unavailable until the synchronized method finishes.
b.	All other threads in the application will be suspended until the synchronized method completes.
c.	Only one thread at a time will be allowed to execute the method. Any other threads that attempt to execute the method will be forced to wait until the method finishes for the current thread.
d.	Multiple threads can execute the method simultaneously. The task scheduler will automatically switch the execution among the various threads.

COMPLETION

A/an ________________ is a single sequential flow of control within an application that often completes a specific task.

________________ threads execute independently of each other.