Netgear WNDA3100 사용자 설명서

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NETGEAR RangeMax Dual Band Wireless-N USB Adapter WNDA3100 User Manual
3-3
v1.0, December 2007
In the network shown in the previous figure, the two PCs with gigabit (1000 Mbps) Ethernet 
adapters have a gigabit connection through the router to the storage server. With a high-speed 
router this connection allows for extremely fast backups or quick access to large files on the server. 
The PC connected through a pair of Powerline HD adapters is limited to the 200 Mbps speed of the 
Powerline HD connection. Although any of the links in this example would be sufficient for high-
traffic applications such as streaming HD video, the use of older devices such as 10 Mbps Ethernet 
or 802.11b wireless would create a significant bottleneck.
In planning your network, think about which tasks will have the heaviest traffic flow between 
them. Examples are:
A media center in one room streaming high-definition video from a server in another room
A storage device that is used for backing up your computers
Overview of Home and Small Office Networking 
Technologies
Common connection types and their speed and security considerations are:
Broadband Internet
Your Internet connection speed is determined by your modem type, such as ADSL or cable 
modem, as well as the connection speed of the sites to which you connect, and general Internet 
traffic. ADSL and cable modem connections are asymmetrical, meaning they have a lower 
data rate to the Internet (upstream) than from the Internet (downstream). Keep in mind that 
when you connect to someone else who also has an asymmetrical connection, the data rate 
between your sites is limited by each side’s upstream data rate. A typical residential ADSL or 
cable modem connection provides a downstream throughput of about 1 to 3 megabits per 
second (Mbps). Newer technologies such as ADSL2+ and Fiber to the Home (FTTH) l 
increase the connection speed to tens of Mbps.
Wireless
A high-speed wireless router can provide a wireless data throughput of up to 300 Mbps using 
technology called multiple-input multiple-output (MIMO), in which multiple antennas 
transmit multiple streams of data. The use of multiple antennas also provides excellent range 
and coverage. With the introduction of the newer WPA and WPA2 encryption and 
authentication protocols, wireless security is extremely strong.