Cisco Exam #640-821:
INTRO to Cisco Networking Technologies

There are two ways to qualify for Cisco's CCNA (Cisco Certified Network Associate) certification:
One is to take just one exam, 640-801.
The other is to take two separate exams:
641-821 (Intro to Cisco Networking Technologies)
and
640-811 (Interconnecting Cisco Networking Devices)

Books
Tutorials
Certification
CCDA
CCNA
CCNP
CISS
ICND

Books

CCNA JumpStart (2nd Edition), at Amazon UK
CCNA INTRO Exam Certification Guide (CCNA Self-Study, 640-821, 640-801), 1st Edition, at Amazon USA
CCNA ICND Exam Certification Guide (CCNA Self-Study, 640-811, 640-801), 4th Edition
CCNA: Cisco Certified Network Associate Exam Notes (Sybex), at Amazon UK
Books for CCNA
CCNA: Cisco Certified Network Associate Study Guide, at Amazon UK for £2959

Tutorials

Cisco Router Configuration Tutorial
Exam notes for exam 640-507
MCSE Guide mcseguide.com

Notes