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27 Cards in this Set
- Front
- Back
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DSSS |
direct sequence spread spectrum data is divided into separate sections, each travels over different frequencies at the same time |
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FHSS |
frequency hopping spread spectrum some data transmits at frequency 1 and then the system hops to frequency 2, and so on |
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Wi-Fi |
wireless fidelity |
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Backwards compatible frequencies? |
b/g/n |
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How many ISM channels are there? What channels do not overlap? |
11 total channels, 1, 6, 11 do not overlap |
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How many UNII channels are there? Which channels overlap? |
12 total channels, no overlap |
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CAPWAP |
Control and Provisioning for Wireless Access Points |
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CSMA/CA |
Carrier Sense Multiple Access with Collision Avoidance Random countdown timers |
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Local mode |
Default mode of operation |
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H-REAP mode |
For remote LAP management across WAN links |
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Monitor mode |
APs exclude themselves from handling data traffic and dedicate themselves to location-based services (LBS) |
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Rogue Detector mode |
Monitors for rogue APs |
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Sniffer mode |
Captures and forwards all packets of a remote sniffer |
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Bridge mode |
For point-to-point and point-to-multipoint solutions |
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Management interface |
In-band management |
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Service-port interface |
Out-of-band management |
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AP manager interface |
Layer 3 discovery and association |
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Dynamic interface |
Dedicated to WLAN client data; analogous to VLANs |
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Virtual interface |
Layer 3 authentication and mobility management |
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Mobility |
Allows users to access the network from several locations |
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Roaming |
Occurs when the wireless client changes association from one AP to another Intracontroller / Intercontroller (L2 & L3) / Mobility Groups |
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RRM |
Radio Resource Management |
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RSSI |
Received Signal Strength Indicator |
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RF group |
Cluster of WLCs that coordinate RRM calculations |
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CAPWAP authentication? |
DTLS. 5246 (control) 5247 (data) |
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g.729 calls? g.711 calls? |
g.729 = 8 g.711 = 7 |
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WLC selection order? |
primary, secondary, tertiary, master, assoc. capacity |
