SOA Certified Professional – Foundation — Question 4

Service Composition A is comprised of 4 services. Service Composition B is comprised of 6 services. Because both service compositions are comprised of services from the same service inventory, the service inventory will have a total of how many services?

Answer options

• A. 10
• B. 24
• C. Based on the information provided, it's impossible to know how many services reside in the service inventory because we don't know how many other service compositions exist.
• D. Based on the information provided, it's impossible to know how many services reside in the service inventory because the quantity of services within a service

Correct answer: D

Explanation

The correct answer is D because we cannot determine the total number of services in the inventory without knowing if there are additional service compositions that might share or not share services with A and B. Options A and B incorrectly assume that the total can be calculated simply by adding the known services, while option C does not account for the ambiguity caused by the lack of information on other compositions.