Transceiver A transceiver joins two network segments together. Transceivers can also be used to join a segment that uses one medium to a segment that uses a different medium. On a 10BASE-5 network, the transceiver connects the network adapter or other network device to the medium. Transceivers also can be used on 10BASE-2 or 10BASE-T networks to attach devices with AUI ports.

U

UDP

The User Datagram Protocol is a connectionless

 

protocol that resides above IP in the TCP/IP suite

ULP

The upper-layer protocol refers to Application Layer

 

protocols such as FTP, SNMP, and SMTP.

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.

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