ITPEC FE Morning April 2022 Question 61

Analysing business and systems through four layers, business, data, application and technology, for total optimization — that is what enterprise architecture does.

EA models the whole organisation in four architectures: the business architecture (business processes), the data architecture (the information used), the application architecture (the systems that support the business) and the technology architecture (the platform). Each is drawn as it is now and as it should be, and the gap is closed step by step so that the organisation is optimised as a whole rather than one department or one system at a time.

Answer (b)

Why not others:

• •(a) — data flow, process, file, and data source and sink are the four elements of a DFD (data flow diagram)
• •(c) — a standardised notation that unifies object-oriented methods and includes the class diagram is UML
• •(d) — expressing a conceptual data model as entities and relationships is an E-R diagram

Key rule: EA is an organisation-wide optimisation method built on the four layers business, data, application and technology; DFD, UML and E-R diagrams are notations for modelling one system.

System Strategy · AI-written, may contain errors