Exam OG0-093 topic 1 question 8 discussion

the more foundation the more re-usable

TRM remains in Answer B

TRM remains in Answer A

Answer - A Common Systems Architectures

Ans D Enterprise Architecture: This level contains the most reusable architecture elements, including enterprise-wide data architectures, application architectures, and technical architectures. These elements are designed to be used across the entire organization and can be reused in multiple projects and initiatives.

Foundation Architecture. Common Systems Architectures being highly reusable doesn't mean most reusable. Foundation Architecture is highly reusable as well. But it is most re-usable as it is more generic and sits on the left side of the continuum.

Common Systems Architectures guide the selection and integration of specific services from the Foundation Architecture to create an architecture useful for building common (i.e., highly re-usable) solutions across a wide number of relevant domains. Refer Common System Architectures definition: https://pubs.opengroup.org/architecture/togaf92-doc/arch/

The organization needs and business requirements are addressed in increasing detail from left to right. The architect will typically look to find re-usable architectural elements toward the left of the continuum. When elements are not found, the requirements for the missing elements are passed to the left of the continuum for incorporation. Those implementing architectures within their own organizations can use the same continuum models specialized for their business. http://www.opengroup.org/public/arch/p3/ec/ec_ac.htm

B. Foundation Architectures

A. -- Common Systems Architectures guide the selection and integration of specific services from the Foundation Architecture to create an architecture useful for building common (i.e., highly reusable) solutions across a wide number of relevant domains.

Moving from left to right means moving from generic to specific architecture. The level of reuse is more for generic compared to specific. Foundation architecture is the most generic architecture, and hence extent of reuse is maximum. My vote is for Foundation Architecture

Common Systems Architectures guide the selection and integration of specific services from the Foundation Architecture to create an architecture useful for building common (i.e., highly reusable) solutions across a wide number of relevant domains. From here i agree the answer is "Common System"

Common Systems Architectures, provides building blocks for easy reuse and lower costs

In foundation exam, they said common system is correct answer. bit confused