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Are semaphores part of the exam topics?

 
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Hi,
I have seen in many mock exames SCJP related and also noted that some book related to OCPJP7 treat the topic in the subject mentioned.
However in the official exam topic list:

Concurrency

Use collections from the java.util.concurrent package with a focus on the advantages over and differences from the traditional java.util collections.
Use Lock, ReadWriteLock, and ReentrantLock classes in the java.util.concurrent.locks package to support lock-free thread-safe programming on single variables.
Use Executor, ExecutorService, Executors, Callable, and Future to execute tasks using thread pools.
Use the parallel Fork/Join Framework



It does not appear.
Has anybody who sat for the exam, encountered questions about the Semaphore class?

Thanks in advance.

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