| ULP | The  | 
| 
 | 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  | 
| 
 | by all access methods. It consists of several pairs of | 
| 
 | wires enclosed in an unshielded sheath. | 
W
| WAN | |
| 
 | groups of interconnected computers that are separated | 
| 
 | by a wide distance and communicate with each other | 
| 
 | via common carrier telecommunication techniques. | 
| Windows | Windows is a graphical user interface for workstations | 
| 
 | that use DOS. | 
| Workgroup | A workgroup is a group of users who are physically | 
| 
 | located together and connected to the same LAN, or a | 
| 
 | group of users who are scattered throughout an | 
| 
 | organization but are logically connected by work and | 
| 
 | are connected to the same network group. | 
| Workstations | Workstation refers to the intelligent computer on the | 
| 
 | user’s desktop. This computer may be an  | 
| 
 | PC, a Macintosh, or a  | 
| 
 | workstation is any intelligent device a user works from. | 
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