Cisco AIR-PCI340 Installation And Configuration Manual page 292

Glossary
C
Complementary code keying. A modulation technique used by IEEE 802.11b-compliant wireless LANs
CCK
for transmission at 5.5 and 11 Mbps.
Cisco Centralized Key Management. Using CCKM, authenticated client devices can roam from one
CCKM
access point to another without any perceptible delay during reassociation. An access point on your
network provides wireless domain services (WDS) and creates a cache of security credentials for
CCKM-enabled client devices on the subnet. The WDS access point's cache of credentials dramatically
reduces the time required for reassociation when a CCKM-enabled client device roams to a new access
point.
Cisco Key Integrity Protocol. Cisco's WEP key permutation technique based on an early algorithm
CKIP
presented by the IEEE 802.11i security task group.
A radio device that uses the services of an access point to communicate wirelessly with other devices
client
on a local area network.
Carrier sense multiple access. A wireless LAN media access method specified by the IEEE 802.11
CSMA
specification.
A method of checking for errors in a received packet.
cyclic redundancy
check (CRC)
D
The range of data transmission rates supported by a device. Data rates are measured in megabits per
data rates
second (Mbps).
A ratio of decibels to an isotropic antenna that is commonly used to measure antenna gain. The greater
dBi
the dBi value, the higher the gain and the more acute the angle of coverage.
Dynamic Host Configuration Protocol. A protocol available with many operating systems that
DHCP
automatically issues IP addresses within a specified range to devices on the network. The device retains
the assigned address for a specific administrator-defined period.
A type of low-gain (2.2-dBi) antenna consisting of two (often internal) elements.
dipole
Direct-sequence spread spectrum. A type of spread spectrum radio transmission that spreads its signal
DSSS
continuously over a wide frequency band.
Packets that were received twice because an acknowledgement got lost and the sender retransmitted the
duplicate packets
packet.
Cisco Aironet 340, 350, and CB20A Wireless LAN Client Adapters Installation and Configuration Guide for Windows
GL-2
OL-1394-07