Direct Sequence Spread Spectrum (DSSS) technology uses channels that are Mhz wide to transmit data in the 2.4 GHz ISM band.
Answer(s): C
The portion of the 2.4 GHz ISM band that is useable for wireless LANs consists of 83.5MHz. DSSS channels are 22 MHz wide, and there are 11 channels specified for use in the United States.
A GAIN of +3dB yields a power ratio of?
Answer(s): A
The reference point that relates the logarithmic dB scale to the linear watt scale is:1 mW = 0 dBmThe m in dBm refers simply to the fact that the reference is 1 milliwatt (1 mW) and therefore a dBm measurement is a measurement of absolute power. The relationship between the decibels scale and the watt scale can be estimated using the following rules of thumb:+3 dB will double the watt value:(10 mW + 3dB ?___ 20 mW)
Available WLAN security solutions include?
Answer(s): B
the more featuresthe access point has, the more the access point will cost. For example, some SOHO access points will have WEP, MAC filters, and even a built-in web server. If features such as viewing the association table, 802.1x/EAP support, VPN support, routing functionality, Inter-access point protocol, and RADIUS support are required, expect to pay several times as much for an enterprise-level access point.
WLAN client-side devices may use which of the followingsecurity features?
Answer(s): D
EAP-Cisco Wireless. Also called LEAP (Lightweight Extensible AuthenticationProtocol), this EAP authentication type is used primarily in Cisco wireless LAN access points. LEAP provides security during credential exchange, encrypts data transmission using dynamically generated WEP keys, and supports mutual authentication.
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