Questions

1. Which of these can be used for cross-process synchronization?
   
   1. Lock
   2. Interlocked.Increment
   3. Interlocked.MemoryBarrierProcessWide
2. Which of these is not a valid memory barrier?
   
   1. Read memory barrier
   2. Half memory barrier
   3. Full memory barrier
   4. Read and execute memory barrier
3. From which of the following states can we not resume a thread?
   
   1. WaitSleepJoin
   2. Suspended
   3. Aborted
4. An unnamed semaphore can provide synchronization where?
   
   1. Within process
   2. Across process
5. Which of these constructs support tracking threads?
   
   1. SpinWait
   2. SpinLock