Non-functional requirements question

[Nadilson Ferrreira]

Hi guys,
The book Sun Certified Enterprise Architect for J2EE Study Guide has
got this question on the Self Test section, but it suggests the
letter D as the right anwser (and it is). But why, A and E are not
correct. I guess extensibility and manageability are non-functional
requirements. What you guys think about it?
2. Which of the following are non-functional requirements?
A. Scalability, availability, extensibility, manageability, and
security
B. Performance, reliability, elaboration, transition, documentation,
and security
C. Specification, elaboration, construction, transition, use cases,
and security
D. Performance, availability, scalability, and security
E. Reliability, availability, scalability, manageability, and security

[Thomas Hofmann]

Hi,
the non functional reqs are performance, scalability, reliability, availability, manageability, extensibiliy, maintainability and security. So you're right: A,D,E are the correct answers.