ITPEC FE Morning April 2020 Question 54
ITPEC FE Morning April 2020 — Question 54 of 80
The Function Point (FP) method estimates software size based on the number and complexity of five user-visible function types:
- •External Inputs — data entering the system
- •External Outputs — data produced by the system
- •Internal Logical Files — data stores maintained inside the system
- •External Inquiries — request-response pairs
- •External Interface Files — data referenced from other systems
Each element is weighted by complexity (low / average / high), then adjusted by technical factors to produce a final FP count.
Why not others:
- (a) Counting "steps" describes the LOC (Lines of Code) method
- (b) Searching past examples and comparing differences describes analogy-based estimation
- (d) Estimating person-hours via WBS describes bottom-up estimation
Key rule: Function Points measure what the system does for users (inputs, outputs, files, inquiries), not how much code it takes.
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