answer all true or false and multiple choices

1.What data type is being wrapped by Semaphores in C++ A) atomic boolean B int C) boolean D) atomic int

2.In addition to modifying the counter value, what else does calling the semaphore's release() method do? A) Block and wait until the semaphore is available. B) increments the internal counter and unblocks acquirers C) Block all other threads waiting on the semaphore. D) nothing else

3. Calling the semaphore's release() method blocks and waits until the semaphore is available.

True False

4. How many times you can use barriers in your program A) 2 B) 1 C) Unlimited D) 3