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● Port Number — A 16-bit number used by the TCP and UDP protocols to direct traffic on a TCP/IP
host. Certain port numbers are standard for common applications.
● PRL — Preferred Roaming List. A list that your wireless phone or device uses to determine which
networks to connect with when you are roaming. (Network operator specific).
● Protocol — A standard that enables connection, communication, and data transfer between
computing endpoints.
● Proxy — A firewall mechanism that replaces the IP address of a host on the internal (protected)
network with its own IP address for all traffic passing through it.
● Router — A device that directs traffic from one network to another.
● SIM — Subscriber Identification Module. Found in LTE and GSM network technology, the SIM is a card
containing identification information for the subscriber and their account. The SIM card can be moved
to different devices.
● SSID — Service Set IDentifier. The name assigned to a Wi-Fi network.
● TCP/IP — Transmission Control Protocol/Internet Protocol. The set of communications protocols used
for the Internet and other similar networks.
● USB — Universal Serial Bus. A connection type for computing device peripherals such as a printer,
mobile modem, etc. USB connectors may be used for data transfer or charging.
● USB Port Types — The USB ports on computers and hubs have a rectangular Type A socket, and
peripheral devices have a cable with a Type A plug. Peripherals that do not have an attached cable
have a square Type B socket on the device and a separate cable with a Type A and Type B plug. Ports
and connectors are available in different sizes (for example, standard, mini, and micro).
● VPN — Virtual Private Network. A secure private network that runs over the public Internet.
Commonly used to connect to an office network from elsewhere.
● WCDMA — Wideband Code Division Multiple Access. An air interface standard found in 3G mobile
telecommunications networks. The most-commonly used member of the UMTS family.
● WWAN — Wireless Wide Area Network. A public network that extends beyond architectural,
geographical, or political boundaries (unlike a LAN, which is usually a private network located within a
room, building, or other limited area).
● Wi-Fi — Wireless Fidelity. Any system that uses the 802.11 standard developed and released in 1997 by
the IEEE.
● Wi-Fi Client — A wireless device that connects to the Internet via Wi-Fi.
● WPA/WPA2 — Wi-Fi Protected Access. A security protocol for wireless 802.11 networks from the Wi-Fi
Alliance.