Which of the following activities are performed by a service desk? 1. Logging details of incidents and service requests 2. Providing first-line investigation and diagnosis 3. Restoring service 4. Impl

Activity 4 is not a service desk responsibility - implementing all standard changes is handled by specialized technical teams - so 'all of the above' is incorrect.

Logging incident and request details (1) is a fundamental service desk activity that creates the audit trail for all contacts. First-line investigation and diagnosis (2) is performed by service desk analysts before escalating unresolved issues. Restoring service (3) - for example by applying a known workaround - is also a core service desk duty. Implementing all standard changes (4) is incorrect because standard change implementation is carried out by relevant technical or operational teams, not the service desk.

First-line investigation (2) is genuinely a service desk function, and activity 4 is not, making this pairing incorrect and missing the correct activities 1 and 3.

This option omits activities 1 and 2 which are core service desk functions, and incorrectly includes activity 4 which is not a service desk responsibility.