Wireless Networking Standards
The following are the most commonly used wireless network technologies:
■ 802.11b The original and still most common wireless network type. 802.11b advertises
a theoretical network throughput of 11 Mbps, but 3–4 Mbps is more realistic. Because
802.11g and 802.11n are backward-compatible with 802.11b, an 802.11b client can connect
to almost any network (albeit at the slower 802.11b speed).
NOTE 802.11
An 802.11 standard preceded 802.11b, but it was never widely used.
■ 802.11g An update to 802.11b that advertises a theoretical network throughput of 54
Mbps (with 10–15 Mbps realistic bandwidth under good circumstances). You can use
802.11g network access points in one of two modes: mixed (which supports 802.11b clients
but reduces bandwidth for all clients) or 802.11g-only (which does not support
802.11b clients but offers optimal bandwidth).
■ 802.11n An update to 802.11g and 802.11b that provides improved range and performance
claims of 250 Mbps (with a much smaller realistic bandwidth). In addition to
providing backward compatibility with 802.11b and 802.11g, this standard is backward
compatible with 802.11a. As of the time of this writing, 802.11n has not yet been
standardized; however, many vendors have offered wireless access points with support
for “pre-N” standards.————————(
Here means aroung year2008~2009.——俺注)
■ 802.11a An old standard that uses the 5.4 GHz range instead of the 2.4 GHz range used
by 802.11b, 802.11g, and 802.11n. 802.11a originally competed with 802.11b, but it was
not as popular and has now been largely abandoned.
Many vendors offer wireless access points that include proprietary extensions that offer better
network performance when used with wireless network adapters from the same vendor.
Although these proprietary extensions can improve performance, they don’t work with network
adapters made by other vendors.
——收费图书。看到的骚年你可能已经违法了。
土豪们吃不惯的怎么可以不使劲灌呢？！
日语考级之类这里各种放闪光弹的，我们呃..各非偏日人士？还不是出力地一个一个啃假名。
有啥不懂的，
来让大叔们调教
[ 此帖被灭虫高手在2014-05-04 10:33重新编辑 ]
