T1: Basic Administration and General Linux
  
  T2: Distribution-specific Items (installation, configuration, init sequence, fs hierarchy, package management, GUI, tools)
  
  (distributions listed below alphabetically)
  
  T2a: Caldera
  
  T2b: Debian
  
  T2c: Pacific HiTech
  
  T2d: Red Hat
  
  T2e: Slackware
  
  T2f: SuSE
  
  et al.
T3: Advanced Administration & Troubleshooting
  
  T4: Linux Internals
  
T5a: Windows Integration
  
  T5b: Internet Server
  
  T5c: Database Server
  
  T5d: Security, Firewalls, Encryption
  
  T5e: Kernel Internels & Device Drivers; Creating Distribution Packages