Asus WL-160G User Manual download pdf (Page 57)

5. Appendix

ASUS 802.11g Access Point 57

Chapter 5 - Appendix

Ethernet

The most widely used LAN access method, which is defined by the IEEE

802.3 standard. Ethernet is normally a shared media LAN meaning all devices

on the network segment share total bandwidth. Ethernet networks operate at

10Mbps using CSMA/CD to run over 10-BaseT cables.

Firewall

A firewall determines which information passes in and out of a network. NAT

can create a natural firewall by hiding a local network’s IP addresses from the

Internet. A Firewall prevents anyone outside of your network from accessing

your computer and possibly damaging or viewing your files.

Gateway

A network point that manages all the data traffic of your network, as well as to

the Internet and connects one network to another.

IEEE

The Institute of Electrical and Electronics Engineers. The IEEE sets standards

for networking, including Ethernet LANs. IEEE standards ensure

interoperability between systems of the same type.

IEEE 802.11

IEEE 802.xx is a set of specifications for LANs from the Institute of Electrical

and Electronic Engineers (IEEE). Most wired networks conform to 802.3, the

specification for CSMA/CD based Ethernet networks or 802.5, the specification

for token ring networks. 802.11 defines the standard for wireless LANs

encompassing three incompatible (non-interoperable) technologies: Frequency

Hopping Spread Spectrum (FHSS), Direct Sequence Spread Spectrum (DSSS),

and Infrared. 802.11 specifies a carrier sense media access control and physical

layer specifications for 1 and 2 Mbps wireless LANs.

IEEE 802.11a (54Mbits/sec)

Compared with 802.11b: The 802.11b standard was designed to operate in

the 2.4-GHz ISM (Industrial, Scientific and Medical) band using direct-sequence

spread-spectrum technology. The 802.11a standard, on the other hand, was

designed to operate in the more recently allocated 5-GHz UNII (Unlicensed

National Information Infrastructure) band. And unlike 802.11b, the 802.11a

standard departs from the traditional spread-spectrum technology, instead using

a frequency division multiplexing scheme that's intended to be friendlier to

office environments.

The 802.11a standard, which supports data rates of up to 54 Mbps, is the Fast

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Asus WL-160G User Manual Page 57