| The lease time can vary depending on how long a user is |
| likely to require the Internet connection at a particular |
| location. It's especially useful in education and other |
| environments where users change frequently. Using very |
| short leases, DHCP can dynamically reconfigure networks in |
| which there are more computers than there are available IP |
| addresses. |
| DHCP supports static addresses for computers containing |
| Web servers that need a permanent IP address. DNS - The |
| domain name system (DNS) is the way that Internet domain |
| name are located and translated into Internet Protocol (IP) |
| addresses. A domain name is a meaningful and |
| remember "handle" for an Internet address. |
D S S S | |
| redundant bit pattern for all transmitted data. This bit |
| pattern is called a chip (or chipping code). Even if one or |
| more bits in the chip are damaged during transmission, |
| statistical techniques embedded in the receiver can recover |
| the original data without the need for retransmission. To an |
| unintended receiver, DSSS appears as low power wideband |
| noise and is rejected (ignored) by most narrowband receivers. |
| However, to an intended receiver (i.e. another wireless LAN |
| endpoint), the DSSS signal is recognized as the only valid |
| signal, and interference is inherently rejected (ignored). |
Dynamic IP Address | An IP address that is automatically assigned to a client |
| station in a TCP/IP network, typically by a DHCP server. |
| Network devices that serve multiple users, such as servers |
| and printers, are usually assigned static IP addresses. |
ESS | (Extended Service Set) - A set of more than two or more |
| BSSs (multiple access points) forming a single network. |
Firmware | Code that is written onto |
| programmable |
| has been written onto the ROM or PROM, it is retained |
| even when the device is turned off. |
IEEE | The Institute of Electrical and Electronics Engineers. The |
| IEEE describes itself as "the world's largest technical |
| professional |
| application of electrotechnology and allied sciences for the |
| benefit of humanity, the advancement of the profession, and |
| the wellbeing of our members." The IEEE fosters the |
| development of standards that often become national and |
| international standards. The organization publishes a number |
| of journals, has many local chapters, and several large |
Rev. 1 - YML668 | www.netcomm.com.au |
NP5400 11g Wireless Access Point User Guide | Page 27 |