3Com 3C17205-US - Corp SUPERSTACK 3 SWITCH 4400 24PORT Implementation Manual page 149

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TCP relates to the content of the data travelling through a network —
ensuring that the information sent arrives in one piece when it reaches
its destination. IP relates to the address of the endstation to which data
is being sent, as well as the address of the destination network.
Telnet A TCP/IP application protocol that provides a virtual terminal service,
letting a user log into another computer system and access a device as
if the user were connected directly to the device.
TFTP Trivial File Transfer Protocol. Allows you to transfer files (such as
software upgrades) from a remote device using the local management
capabilities of the Switch.
traffic prioritization A system which allows data that has been assigned a high priority to
be forwarded through a switch without being obstructed by other
data.
unicast A packet sent to a single endstation on a network.
VLAN Virtual LAN. A group of location- and topology-independent devices
that communicate as if they are on the same physical LAN.
VLAN tagging A system that allows traffic for multiple VLANs to be carried on a single
link.
WAN Wide Area Network. A communications network that covers a wide
area. A WAN can cover a large geographic area, and may contain
several LANs within it.
Webcache A device that is installed on the network to cache frequently accessed
Web pages from which they can be retrieved, thus reducing network
traffic over the WAN.