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● NNTP — Network News Transfer Protocol. An Internet application protocol for reading and posting
Usenet (newsgroup) articles.
● Port — A virtual data connection used by programs to exchange data. It is the endpoint in a logical
connection. The port is specified by the port number.
● Port Forwarding — A process that allows remote devices to connect to a specific computer within a
private LAN.
● 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.
● Protocol — A standard that enables connection, communication, and data transfer between
computing endpoints.
● 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.
● RTP — Real-time Transport Protocol. A packet format for streaming multimedia over the Internet.
● SIM — Subscriber Identification Module. Found in 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.
● SMS — Short Message Service. A service for sending short messages of up to 160 (224 in 5-bit mode)
characters to mobile devices. SMS is also known as text messaging.
● SSID — Service Set Identifier. The name assigned to a Wi-Fi network.
● TCP — Transmission Control Protocol. A core protocol for transmitting and receiving information over
the Internet.
● TCP/IP — Transmission Control Protocol/Internet Protocol. The set of communications protocols used
for the Internet and other similar networks.
● UI — User Interface. The part of a software application or hardware device that a user sees and
interacts with.
● 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).
● USSD — Unstructured Supplementary Service Data. A service found in HSPA/GSM networks that
allows the user to retrieve information or implement certain types of call services.
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