440 Glossary
T
TCP/IP
Transmissions Control Protocol. Enables two hosts to
communicate and exchange data streams. TCP
guarantees packet delivery, and guarantees packets
are transmitted and received in the order their sent.
Telnet
Terminal Emulation Protocol. Enables system users
to log in and use resources on remote networks.
TFTP
Trivial File Transfer Protocol. Uses User Data
Protocol (UDP) without security features to transfer
files.
Trap
A message sent by the SNMP that indicates that
system event has occurred.
Trunking
Link Aggregation. Optimizes port usage by linking a
group of ports together to form a single trunk
(aggregated groups).
Tunnel ISATAP
See ISATAP.
U
UDP
User Data Protocol. Transmits packets but does not
guarantee their delivery.
Unicast
A form of routing that transmits one packet to one
user.
V
VLAN
Virtual Local Area Networks. Logical subgroups with
a Local Area Network (LAN) created via software
rather than defining a hardware solution.
W
WAN
Wide Area Networks. Networks that cover a large
geographical area.
Wildcard Mask
Specifies which IP address bits are used, and which
bits are ignored. A wild card mask of
255.255.255.255 indicates that no bit is important.
A wildcard of 0.0.0.0 indicates that all the bits are
important.