Cisco Networking Academy Program CCNA 1 and 2 Companion Guide, Revised Third Edition, is the Cisco approved textbook to use alongside version 3.1 of the Cisco Networking Academy Program CCNA 1 and CCNA 2 web-based courses. The topics covered provide you with the necessary knowledge to begin your preparation for the CCNA certification exam (640-801, or 640-821 and 640-811) and to enter the field of network administration.

CCNA 3 and 4 Companion Guide (Cisco Networking Academy Program) (3rd Edition) is the Cisco approved textbook that supplements version 3.x of the CCNA 3 and 4 online curriculum of the Cisco Networking Academy Program. The topics covered in this course and Companion Guide provide you with the necessary knowledge to further prepare for CCNA certification and to enter the field of network administration.