ผู้เขียน: John Swartz

Todd Lammle, CCSI, CCNA, CCNP, CCSP, CCVP, is the authority on Cisco networking. He has been involved in computers and networking with Fortune 500 companies for almost 30 years. Todd is President of GlobalNet Training, Inc., a networking integration and training firm based in Dallas. He is the bestselling author of numerous Cisco books, including CCNA: Cisco Certified Network Associate Study Guide, with over 200, 000 copies in print. Reach him at www.lammle.com or on Twitter at @lammle. John Swartz, CCIE No. 4426, founded Boson Software, a leading Cisco simulation software company. A Cisco instructor for 15 years, he currently teaches Unified Computing, Nexus switching, and other Data Center technologies.