Nikon WT-4 Bedienungsanleitung PDF herunterladen (Seite 182)

180

Glossary

Appendices

Glossary

Ad-hoc: Devices in an ad-hoc wireless network communicate directly (“peer

to peer”), without a wireless access point.

AES (Advanced Encryption Standard): An encryption standard developed for use

by the American government. AES has been praised for combining strong

encryption with rapid processing.

Auto IP (APIPA—Automatic Private IP Addressing): Allows devices in a network to

automatically assign themselves unique IP addresses if no DHCP server is

found on the network. Auto IP uses addresses from 169.254.1.0 to

169.254.254.255 and a sub-net mask of 255.255.0.0. These addresses are

neither global nor private but are reserved for Auto IP.

BSS-ID (Basic Service Set ID): All wireless devices on an ad-hoc wireless network

share the same BSS-ID. The BSS-ID may be up to thirty-two characters

long and is case sensitive. See also Ad-hoc.

Channel: When multiple wireless LANs with different ESS-IDs are operating

on a single frequency within a given area, transmission speeds will drop.

Specifying a separate channel (frequency) for each network can prevent

interference and increase transmission speeds (note that all devices in the

same network must be set to the same channel). In the IEEE 802.11a

standard, the 5 GHz band is divided into 19 channels, each separated by

20 MHz. In the IEEE 802.11b/g standard, the 2.4 GHz band is divided into

14 channels, each separated by 4 MHz.

DHCP (Dynamic Host Configuration Protocol) Server: Each device in a TCP/IP

network requires an IP address. If a DHCP server is present on the

network, IP addresses will be assigned automatically.

DNS (Domain Name Server): A server that contains a database of IP addresses and

host names for the machines it administers and that converts host names to

IP addresses in response to queries from clients. Each DNS can also query

other Domain Name Servers for addresses not listed in its database.

ESS-ID (Extended Service Set ID): Multiple BSSs can be configured to form an ESS,

allowing users to roam between wireless access points. Only devices with the

same ESS-ID as a given access point can communicate with that access point.

The ESS-ID may be up to thirty-two characters long and is case sensitive.

Ethernet: The name given to the IEEE 802.3 LAN standard. Devices in an

Ethernet network are connected via UTP cables for transmission speeds of

up to 10 Mbps (10 base-T) or 100 Mbps (100 base-TX).

Gateway: A network node that acts as an entrance to another network, for

example between a company network and the Internet.

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Nikon WT-4 Bedienungsanleitung Seite 182