ITPEC FE Subject A April 2026 Question 44
ITPEC FE Subject A April 2026 — Question 44 of 60
Trend analysis — study how a resource has been used over time and project that usage forward.
It works purely from historical measurements: take the chronological record of CPU, storage or bandwidth consumption, identify the direction of travel, and extrapolate when a threshold will be reached.
Answer (c)
Why not others:
- (a) — describes building a baseline model, the first phase of modelling, which reproduces current performance rather than predicting change
- (b) — describes simulation modelling, generating artificial transactions to observe response time and throughput
- (d) — describes analytical modelling, deriving those same figures mathematically through queuing theory
Key rule: Trend analysis extrapolates from what actually happened; the modelling techniques construct a representation of the system and experiment on it instead.
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