Glossary
Description
| Network protocol） | log in to remote systems and use resources as if they were | ||||
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| connected to a local system. |
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| UDP（User Datagram | UDP is a | simple | protocol that | exchanges datagram | without |
| acknowledgments or guaranteed delivery, requiring that error | |||||
| Protocol） | |||||
| processing and retransmission be handled by other protocols. | |||||
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| UPnP（Universal Plug and | UPnP is a set of networking protocols for primarily residential | ||||
U | networks | without | enterprise | class devices that | permits | |
| Play） | networked devices. |
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| URL（Uniform Resource | URL describes the access method and the location of an | ||||
| Locator） | information resource object on the Internet |
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| Group of devices on one or more LANs that are configured | ||||
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| (using management software) so that they can communicate as | ||||
| VLAN（Virtual Local Area | if they were attached to the same wire, when in fact they are | ||||
| Network） | located on a number of different LAN segments. Because | ||||
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| VLANs are based on logical instead of physical connections, | ||||
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| they are extremely flexible. |
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| VPN （Virtual Private | Enables IP traffic to travel securely over a public TCP/IP | ||||
| Network） | network by encrypting all traffic from one network to another. | ||||
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| Data communications network that serves users across a broad | ||||
WWAN（Wide Area Network）geographic area and often uses transmission devices provided by common carriers.
