Installation manual

Glossary-7
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Transmission Control Protocol/Internet Protocol (TCP/IP)
Protocol suite that includes TCP as the primary transport protocol, and IP as the network
layer protocol.
Trivial File Transfer Protocol (TFTP)
A TCP/IP protocol commonly used for software downloads.
User Datagram Protocol (UDP)
UDP provides a datagram mode for packet-switched communications. It uses IP as the
underlying transport mechanism to provide access to IP-like services. UDP packets are
delivered just like IP packets – connection-less datagrams that may be discarded before
reaching their targets. UDP is useful when TCP would be too complex, too slow, or just
unnecessary.
Universal Time Coordinate (UTC)
UTC is a time scale that couples Greenwich Mean Time (based solely on the Earth’s
rotation rate) with highly accurate atomic time. The UTC does not have daylight saving
time.
Virtual LAN (VLAN)
A Virtual LAN is a collection of network nodes that share the same collision domain
regardless of their physical location or connection point in the network. A VLAN serves as
a logical workgroup with no physical barriers, and allows users to share information and
resources as though located on the same LAN.
XModem
A protocol used to transfer files between devices. Data is grouped in 128-byte blocks and
error-corrected.