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CISA · Question #343

Which of the following is the MOST important advantage of building enterprise architecture (EA) based on open system architecture?

The correct answer is C. It facilitates interoperability with different systems. The defining advantage of open system architecture is interoperability - systems built on open, published standards can communicate and integrate with other compliant systems regardless of vendor. Cost reduction (A) and simplified development (B) may be secondary benefits, but…

Submitted by viktor_hu· Apr 18, 2026Information Systems Acquisition, Development, and Implementation

Question

Which of the following is the MOST important advantage of building enterprise architecture (EA) based on open system architecture?

Options

  • AIt reduces system licensing costs
  • BIt simplifies the software development process
  • CIt facilitates interoperability with different systems
  • DIt enhances user interface design

How the community answered

(51 responses)
  • A
    2% (1)
  • B
    4% (2)
  • C
    92% (47)
  • D
    2% (1)

Explanation

The defining advantage of open system architecture is interoperability - systems built on open, published standards can communicate and integrate with other compliant systems regardless of vendor. Cost reduction (A) and simplified development (B) may be secondary benefits, but they are not guaranteed. User interface improvement (D) is unrelated to the open vs. proprietary architecture decision. Interoperability is the core architectural benefit.

Topics

#Enterprise Architecture#Open Systems#Interoperability#System Integration

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