Free 1Z0-807 Web TestEngine Demo

Q4 Single choice

ABC Travel offers a night reservation service, exposed as a web service. XYZ Stays offers a hotel reservation service, also exposed as a web service. ABC and XYZ will not change their web service. A startup company has contacted you for advice about designing a new service that combines flight and hotel reservations, which they will offer as a web service.

The startup company plans to provide their service by implementing a portable Java EE solution that aggregates the two services offered by ABC Travel and XYZ Stays, a combined reservation succeeded.

Only if both the flight reservation and the hotel reservation succeed

Which is the most effective way to meet the business requirement?

A
The startup company should implement their new service as a web service that uses an XA transaction
manager.
B
The startup company cannot implement their new service as a web service, but must use an enterprise
JavaBean (EJB) component to gain transaction propagation.
C
The startup company should implement their new service as a web service by calling the two existing
services, and implementing their own compensating transaction.
D
The startup company can implement their new service as a web service by calling the two existing
services in a single transaction, relying on transaction propagation to support this business rule.

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