Cisco Aironet 340 Series, Hardware Installation Manual

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Glossary
2
Cisco Aironet Wireless LAN Adapters Hardware Installation Guide
OL-0795-01
C
CCK
Complementary code keying. A modulation technique used by IEEE
802.11-compliant wireless LANs for transmission at 5.5 and 11 Mbps.
Client
A radio device that uses the services of an Access Point to communicate
wirelessly with other devices on a local area network.
CSMA
Carrier sense multiple access. A wireless LAN media access method specified
by the IEEE 802.11 specification.
D
Data Rates
The range of data transmission rates supported by a device. Data rates are
measured in megabits per second (Mbps).
dBi
A ratio of decibels to an isotropic antenna that is commonly used to measure
antenna gain. The greater the dBi value, the higher the gain, and the more acute
the angle of coverage.
DHCP
Dynamic host configuration protocol. A protocol available with many operating
systems that 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.
Dipole
A type of low-gain (2.2-dBi) antenna consisting of two (often internal) elements.
DSSS
Direct sequence spread spectrum. A type of spread spectrum radio transmission
that spreads its signal continuously over a wide frequency band.