David Mallory, CCIE No. 1933 (Routing and Switching/WAN Switching/Security/Voice), has over 15 years of experience and is a technical education consultant for Cisco System's and is the lead on the new Cisco Implementing Gateways and Gatekeepers (GWGK) course and exam.
© 2019 Pearson Education, Pearson IT Certification. All rights reserved.
221 River Street, Hoboken, NJ 07030