Donald C Bergen II

Cisco Certified Network Associate Routing and Switching (CCNA Routing and Switching)

CCNA

Understanding of Cisco Network Devices

Cisco Certified Network Associate Security (CCNA Security)

Cisco Certified Design Associate (CCDA)

Understanding Cisco Network Security

Cisco Certified Specialist - Security Core

Understanding Design for Cisco Internetworking Solutions

Cisco Certified Network Professional Security (CCNP Security)

Cisco Certified Specialist - Collaboration Core

Cisco Certified Specialist - Security Identity Management Implementation

Cisco Certified Specialist - Network Security Firepower

Webex Insider User Group

Cisco Certified Network Professional Collaboration (CCNP Collaboration)

Cisco Certified Specialist - Network Security VPN Implementation

Cisco Certified Specialist - Web Content Security

Cisco Certified Network Associate Collaboration (CCNA Collaboration)

Cisco Certified Specialist - Collaboration Applications Implementation

Cisco Certified Specialist - Collaboration Call Control & Mobility Implementation

Cisco Certified Specialist - Collaboration Cloud & Edge Implementation

Understanding of Cisco Collaboration Devices and Video Network Devices

Webex Insider Advocacy

Webex Calling Administration Professional

Webex Academy @ WebexOne 2023