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U
UDP The User Datagram Protocol is a connectionless protocol
that resides above IP in the TCP/IP suite
User Name The USERNAME is the unique name assigned to each
person who has access to the LAN.
Utility It is a program that performs a specific task.
UTP Unshielded twisted-pair. UTP is a form of cable used by
all access methods. It consists of several pairs of wires
enclosed in an unshielded sheath.
W
WAN Wide-Area Network. A wide-area network consists of
groups of interconnected computers that are separated
by a wide distance and communicate with each other via
common carrier telecommunication techniques.
WEP WEP is widely used as the basic security protocol in Wi-
Fi networks, which secures data transmissions using 64-
bit or 128-bit encryption.
Windows Windows is a graphical user interface for workstations
that use DOS.
WPA WPA (Wi-Fi Protected Access ) is used to improve the
security of Wi-Fi networks, replacing the current WEP
standard. It uses its own encryption, Temporal Key
Integrity Protocol (TKIP), to secure data during
transmission.
WPA2 Wi-Fi Protected Access 2, the latest security specification
that provides greater data protection and network access
control for Wi-Fi networks. WPA2 uses the government-
grade AES encryption algorithm and IEEE 802.1X-based
authentication, which are required to secure large
corporate networks.