Takayuki Nakamura

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

CCNA

Understanding of Cisco Network Devices

Certified Information Systems Security Professional (CISSP)

Cisco Certified Specialist - Enterprise Core

Cisco Certified Network Professional Routing and Switching (CCNP Routing and Switching)

Cisco Certified Network Professional Enterprise (CCNP Enterprise)

Cisco Certified Specialist - Enterprise Advanced Infrastructure Implementation

Cisco Certified Specialist - Security Core

Cisco Certified Internetwork Expert Enterprise Infrastructure (CCIE Enterprise Infrastructure)

ONEx Agile Fundamentals

CX Baseline Training

Associate of ISC2

Cisco Certified DevNet Associate

Cisco Certified Specialist - Data Center Core

Webex Insider User Group

Cisco Certified Specialist - Service Provider Core

DevNet Class of 2020

Cisco Certified Internetwork Expert Security (CCIE Security)

Support Services Engineer Green Belt

Professional Services Engineer Green Belt

Cisco Certified Internetwork Expert Data Center (CCIE Data Center)

Cisco Certified Internetwork Expert Service Provider (CCIE Service Provider)

Cisco Certified Design Specialist