In ITIL 4, which statement most precisely captures the purpose of the service desk practice?
- ATo investigate the underlying causes of recurring incidents and produce documented workarounds and known errors.
- BTo negotiate, agree, and review targets for service performance with customers and hold suppliers accountable to them.
- CTo authorise changes to live services and decide whether each change is standard, normal, or emergency.
- DTo capture demand for incident resolution and service requests, and to act as the entry point and single point of contact for users. Correct
Why A is wrong: This describes the problem management practice, not the service desk. It is tempting because the service desk often raises the records that problem management later analyses, but investigating root causes is not the service desk's purpose.
Why B is wrong: This is the work of service level management. Candidates confuse the two because both are user-facing, but the service desk handles day-to-day contact and demand rather than negotiating targets.
Why C is wrong: Assessing and authorising changes belongs to the change enablement practice and its change authority. It is a plausible trap because the service desk logs many change-related requests, but it does not authorise changes.
Why D is correct: Correct. ITIL 4 states the purpose of the service desk is to capture demand for incident resolution and service requests and to be the entry point and single point of contact between the service provider and its users.