การสื่อสารข้อมูลและเครือข่าย (Datacommunication and Network)

Understading Modulation	Understading Spectrum	How does your mobile phone work?
How does Internet work?	Optical fiber cables, how do they work?	How does an Antenna work?
Network Topologies	Network Types: LAN, WAN, PAN, CAN, MAN, SAN, WLAN	OSI Model
MAC Address	Network Types: LAN, WAN, PAN, CAN, MAN, SAN, WLAN	Proxy Server
Hub, Switch, & Router Explained	Wireless Access Point vs Wi-Fi Router	2.4 GHz vs 5 GHz WiFi : What is the difference?
DHCP (Dynamic Host Configuration Protocol)	DNS Server (Domain Name System)	Ports
IP Address - IPv4 vs IPv6 Tutorial	Subnet Mask	Public vs Private IP Address
Gate way	Subnet Mask	Public vs Private IP Address
ipconfig	Ping command	Public vs Private IP Address
What is RS232	What is RS485	Public vs Private IP Address