CCNA (Cisco Certified Network Associate) is a certification from Cisco, the world’s most famous company that manufactures and sells networking equipment. This certification helps you to become familiar with a wide range of topics, including:

• LAN/WAN
• OSI and TCP/IP model
• VLANs
• Ethernet
• Switches and routers
• Network utilities (ping, tracert, arp)
• IP addressing
• Subnetting
• Routing protocols (RIP, EIGRP, OSPF)
• WLAN
• NAT
• ACLs