Lesson 1: Mainframe Environment, Architecture, and Core Concepts

This lesson develops practical understanding of mainframe environment, architecture, and core concepts for the Fundamental System Skills z/OS Training.

Topics Covered

• IBM mainframe architecture, z/OS environment, subsystems, storage, and processing concepts
• Datasets, catalogs, libraries, members, naming standards, and system navigation
• TSO/E, ISPF, SDSF, consoles, utilities, and common operational interfaces
• Users, security, permissions, and controlled access
• Mainframe environment orientation and validation

Lesson Outcome

Learners complete this lesson with the ability to explain, apply, validate, and troubleshoot the covered mainframe workflow.