Types of Communication Networks
Local area network
metropolitan area network (MAN)
WAN (wide area network) 
3 Regional, National, and International Networks
Router 
core router & edge router
VPN (virtual private network)
IPsec (Internet Protocol Security)
SSL VPN (Secure Sockets Layer virtual private network) 
What is WLAN?
Bluetooth
Wi-Fi (802.11x standard) 
What is Wi-Fi range extender?
coaxial cable
TCP/IP (Transmission Control Protocol/Internet Protocol)
Network packet
packet-switched
What is the difference between a LAN, a MAN, and a WAN?
Types of Network Topology
Transmission Modes in Computer Networks
Transmission Mediums in Computer Networks
Bounded or Guided Transmission Media
UnBounded or UnGuided Transmission Media
Connection Oriented and Connectionless Services
Computer Network | Ethernet Frame Format
Computer Network | Token Ring frame format
Ethernet Network Technology
USB: Everything You Need to Know
Do USB to Ethernet Adapters Exist for Broadband Modems?
Simple network management protocol (SNMP)
Computer Network | Voice over Internet Protocol (VoIP)