Red Hat Certified System Administrator(RHCSA)
  RH124 - Red Hat System Administration I
  RH135 - Red Hat System Administration II
Red Hat Certified Engineer (RHCE)
  RH124 - Red Hat System Administration I
  RH135 - Red Hat System Administration II
  RH254 - Red Hat System Administration III
Red Hat Certified Security Specialist (RHCSS)
  RHS333 - Red Hat Enterprise Security: Network Services
  RH423 - Red Hat Enterprise Directory Services and Authentication
  RHS429 - Red Hat Enterprise SELinux Policy Administration
Red Hat Certified Data Center Specialist (RHCDS)
  EX401 Deployment and Systems Management
  EX423 - Red Hat Enterprise Directory Services and Authentication
  EX436 Storage Management
Red Hat Certified Architect (RHCA)    
  EX333 - Red Hat Enterprise Security: Network Services
  EX401 - Deployment and Systems Management - -
  EX423 - Directory Services and Authentication
  EX436 - Storage Management
  EX442 - System Monitoring and Performance Tuning - -
Others    
  RH142 - Linux Troubleshooting Techniques and Tools
  RH184 - Enterprise Linux Virtualization
  SOLARIS 10 with VERITAS Volume Manager and Clustering

Student Resources
Upcoming RHCE / RHCSS Batches
Upcoming RHCE / RHCSS Exams
RHCE Results
RHCSS Results
COSS - Student Regulations
COSS - Exam Policies
COSS - Training facilities
Pre-assessment Questionnaires
Red Hat Training Resource Center
RHCE and RHCT FAQs
RHCE and RHCT Exam Preparation Guide