Key Terms

 

Term	Simple Meaning
Network	A group of connected devices
Node	A device connected to a network
LAN	A network within a limited area
WAN	A network covering a large geographic area
PAN	A network around an individual
Topology	The arrangement of devices in a network
Server	A computer that provides resources
Client	A device that requests resources
Router	A device that connects networks
Switch	A device that sends data to the intended recipient
Modem	A device that connects a network to an ISP
Protocol	Rules for communication
TCP/IP	Protocol family used for Internet communication
Wi-Fi	Wireless network technology
Bluetooth	Short-distance wireless communication technology
RFID	Technology used for identification and tracking
NFC	Very short-range communication technology
VPN	A secure connection to a private network
Firewall	A security barrier that controls network traffic
Encryption	Converting readable data into coded form
Authentication	Verifying a user’s identity