CCNA Exploration 1, 2, 3, and 4. All version 4.0.

• CCNA 1:
  CCNA Exploration 1 (Network Fundamentals) Curriculum Installer (14061)
• CCNA 2:
  CCNA Exploration 2 (Routing Protocols and Concepts) Curriculum Installer (10396)
• CCNA 3:
  CCNA Exploration 3 (LAN Switching and Wireless) Curriculum Installer (9538)
• CCNA 4:
  CCNA Exploration 4 (Accessing the WAN) Curriculum Installer (9327)