The right Certificate or Diploma can support a move into (or progression within) roles such as:
IT Support Technician / Service Desk Analyst
Network Administrator (entry to mid-level, depending on experience)
Systems Administrator / Junior Systems Engineer
ICT Operations Support
ICT Project or Team Support roles
IT Coordinator (in smaller organisations)
Pathways toward strategic roles supported by higher-level study and experience
The exact outcome depends on your background, the qualification level, and the direction you want to take – technical, operational, or management-focused.