ITPEC IP October 2022 Question 60

Monitoring of failure occurrence — availability is the share of time a service can be used, so the provider improves it by watching for failures and acting on them.

Availability falls with every failure and with every minute of recovery. By monitoring when and where failures occur, the provider detects them early and so shortens the downtime, and finds components that fail repeatedly so it can replace or reinforce them before the next failure.

Answer (b)

Why not others:

• •(a) — measuring response time tracks performance, the concern of capacity management; a slow service is still available
• •(c) — managing the server configuration is configuration management: keeping accurate records of the components that other processes rely on, not a measure against failures in itself
• •(d) — recording a program's modification history supports change and release management, controlling what was changed rather than keeping the service up

Key rule: Availability is MTBF ÷ (MTBF + MTTR): raise it by making failures rarer and recovery faster, and both start with monitoring the failures that occur.

Service Management · AI-written, may contain errors