Important Terms
- bandwidth - width of a frequency band
- data rate - number of bits per second
- attenuate - the weakening of signals with distance from origin
- spread spectrum - spread the signal over a wider frequency band to minimize the impact of interference from other devices
- frequency hopping spread spectrum (FHSS) - is a spread spectrum technique that involves transmitting at different frequencies over time
- direct sequence spread spectrum (DSSS) - adds redundancy for greater tolerance of interference
- endpoint classes
- base station
- mobile - often relies on base station mediator for communication
5 problems in Connecting Nodes
- network encoding - bits onto transmission medium
- framing - portray sequence of bits into a complete message
- error detecting and correcting - detecting errors in data and possibly correct it
- reliable delivery - making sure data was received
- Carrier Sense Multiple Access - sharing a single link
Connecting a Local Network
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