CCNA Cisco Certified Network Associate Study Guide - FTP Server

Glossary 661
BUS broadcast and unknown servers: In LAN emulation, the hardware or
software responsible for resolving all broadcasts and packets with unknown
(unregistered) addresses into the point-to-point virtual circuits required by
ATM. See also: LANE, LEC, LECS, and LES.
BX.25 AT&T’s use of X.25. See also: X.25.
bypass mode An FDDI and Token Ring network operation that deletes
an interface.
bypass relay A device that enables a particular interface in the Token
Ring to be closed down and effectively taken off the ring.
byte-oriented protocol Any type of data-link communication protocol
that, in order to mark the boundaries of frames, uses a specific character
from the user character set. These protocols have generally been superseded
by bit-oriented protocols. Compare with: bit-oriented protocol.
cable range In an extended AppleTalk network, the range of numbers
allotted for use by existing nodes on the network. The value of the cable
range can be anywhere from a single to a sequence of several touching network
numbers. Node addresses are determined by their cable range value.
CAC Connection Admission Control: The sequence of actions executed by
every ATM switch while connection setup is performed in order to determine
if a request for connection is violating the guarantees of QoS for established
connections. Also, CAC is used to route a connection request through
an ATM network.
call admission control A device for managing of traffic in ATM networks,
determining the possibility of a path containing adequate bandwidth
for a requested VCC.
call priority In circuit-switched systems, the defining priority given to each
originating port; it specifies in which order calls will be reconnected. Additionally,
call priority identifies which calls are allowed during a bandwidth
reservation.
call set-up time The length of time necessary to effect a switched call
between DTE devices.