WebShare 144WN

 

 

 

 

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.

 

 

 

Question

Would the information be intercepted while transmitting on

 

 

air?

 

Answer

WLAN features two-fold protection in security. On the

 

 

hardware side, as with Direct Sequence Spread Spectrum

 

 

technology, it has the inherent security feature of scrambling.

 

 

On the software side, WLAN offers the encryption function

 

 

(WEP) to enhance security and access control.

 

 

 

Question

What is WEP?

 

Answer

WEP is Wired Equivalent Privacy, a data privacy mechanism

 

 

based on a 64-bit or 128-bit shared key algorithm, as

 

 

described in the IEEE 802.11 standard.

 

 

 

Question

What is infrastructure mode?

 

Answer

When a wireless network is set to infrastructure mode, the

 

 

wireless network is configured to communicate with a wired

 

 

network through a wireless access point.

 

 

 

Question

What is roaming?

 

Answer

Roaming is the ability of a portable computer user to

 

 

communicate continuously while moving freely throughout an

 

 

area greater than that covered by a single access point.

 

 

Before using the roaming function, the workstation must make

 

 

sure that it is the same channel number with the access point

 

 

of dedicated coverage area.

 

 

 

Question

What is ISM band?

 

Answer

The FCC and their counterparts outside of the U.S. have set

 

 

aside bandwidth for unlicensed use in the ISM (Industrial,

 

 

Scientific and Medical) band. Spectrum in the vicinity of 2.4

 

 

GHz, in particular, is being made available worldwide. This

 

 

presents a truly revolutionary opportunity to place convenient

 

 

high-speed wireless capabilities in the hands of users around

 

 

the globe.

 

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