ITPEC FE Subject A April 2025 Question 43

Source exam: ITPEC FE Subject A April 2025Topic: IT Service Management

ITPEC FE Subject A April 2025 — Question 43 of 60

The service runs 8:00 AM to 10:00 PM = 14 hours/day, with 30 business days/month.

  • Total service hours: 14 × 30 = 420
  • Max downtime: 420 × (1 - 0.995) = 420 × 0.005 = 2.1 hours

Why not others:
- (a) 0.3 — implies ~99.93% availability, far stricter than required

- (c) 3.0 — implies ~99.29%, violates the 99.5% SLA

- (d) 3.6 — implies ~99.14%, violates the 99.5% SLA

Key rule: Max downtime = total service hours × (1 − availability%).

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