CSMA/CD: | Carrier Sense Multiple Access/Collision Detection, which is a |
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| LAN access method used in Ethernet. When a device wants to |
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| gain access to the network, it checks to see if the network is quiet | |
| (senses the carrier). If it is not, it waits a random amount of time |
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| before retrying. If the network is quiet and two devices access |
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| the line at exactly the same time, their signals collide. When the |
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| collision is detected, they both back off and wait a random amount | |
| of time before retrying. |
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DHCP: | Dynamic Host Configuration Protocol, which is a protocol that lets | |
| network administrators manage and allocate Internet Protocol |
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| (IP) addresses in a network. Every computer has to have an IP |
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| address in order to communicate with each other in a TCP/IP based | |
| infrastructure network. Without DHCP, each computer must be |
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| entered in manually the IP address. DHCP enables the network |
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| administrators to assign the IP from a central location and each |
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| computer receives an IP address upon plugged with the Ethernet |
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| cable everywhere on the network. |
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DSSS: | Direct Sequence Spread Spectrum. DSSS generates a redundant | |
| bit pattern for each bit to be transmitted. This bit pattern is called |
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| a chip (or chipping code). The longer the chip, the greater the |
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| probability that the original data can be recovered. Even if one or |
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| more bits in the chip are damaged during transmission, statistical |
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| techniques embedded in the radio can recover the original data |
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| without the need for retransmission. To an unintended receiver, |
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| DSSS appears as low power wideband noise and is rejected |
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| (ignored) by most narrowband receivers. |
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Dynamic IP Address: | An IP address that is assigned automatically to a client station in a | |
| TCP/IP network by a DHCP server. |
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NP642 IEEE 802.11g PCI Adapter | 27 | |
YML785 Rev1 |
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