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Sergey Lisitsin
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Cisco Certified Network Associate Routing and Switching (CCNA Routing and Switching)
Cisco
CCNA
Cisco
Understanding of Cisco Network Devices
Cisco
Cisco Certified Specialist - Enterprise Core
Cisco
Cisco Certified Network Professional Routing and Switching (CCNP Routing and Switching)
Cisco
Cisco Certified Network Professional Enterprise (CCNP Enterprise)
Cisco
Cisco Certified Specialist - Enterprise Advanced Infrastructure Implementation
Cisco
Juniper Networks Certified Associate, Junos (JNCIA-Junos)
Juniper Networks
Cisco Certified Network Associate Security (CCNA Security)
Cisco
Cisco Certified Design Associate (CCDA)
Cisco
Understanding Cisco Network Security
Cisco
Understanding Design for Cisco Internetworking Solutions
Cisco
Cisco Certified CyberOps Associate
Cisco
Cisco Certified DevNet Associate
Cisco
Juniper Networks Certified Specialist, Enterprise Routing & Switching (JNCIS-ENT)
Juniper Networks
DevNet Class of 2020
Cisco
Cisco Certified DevNet Specialist - Core
Cisco
Cisco Certified Network Associate Service Provider (CCNA Service Provider)
Cisco
Understanding Cisco Service Provider Next-Generation Networks
Cisco
DevNet 500
Cisco
Cisco Champion 2024
Cisco
Cisco Champion 2022
Cisco
Cisco Champion 2021
Cisco
Cisco Designated VIP
Cisco
