Do I understand how Persistent Context ( Hibernate ) works?

Question

Hibernate

Entity Manager is a wrapper that uses session hibernate to persist the entity. The Session has a Persistent Context into which it stores objects in the cache. Since the session is closed every time after a transaction, the cache is cleared every time after it.
This is the first level of the Hibernate cache.

I would be very glad if you could tell me if the above is correct and correct me if not.