Which type allows you to share servlet attributes across your entire web application?

What is true about Message-Driven Beans (MDBs)?

Given the code fragment:

Assuming this bean is used only in the code fragment above, how long will the injected Beaninstance be available?

Given the JPQL code fragment:
Select pub.title, pub.author, pub.pages FROM Publisher pub
Which two clauses do you add to this JPQL query to retrieve only those books with between 500 and 750 total pages? (Choose two.)

While creating the consignment agreement, you have set the consumption advice frequency to "monthly" and the billing cycle close date to "31st August, 2020".
What will happen when you run the consumption advice process on 31st August, 2020?