Chapter 6 Test Prep

Most wireless systems operate in the ________ range. You Answered hz kHz GHz MHz

GHz

________ is a technique for preventing two wireless stations from interfering with each other by transmitting at the same time. Creating extended service sets The distribution system Roaming Media access control

Media access control

To use an access point, you need to know its ________. BSSID SSID Wi-Fi ID ESSID

SSID

Wireless access points typically link wireless clients to ________. servers on the wired network wireless servers both A and B

servers on the wired network

Wi-Fi is a term used by the ________. Wi-Fi Alliance IEEE both A and B neither A nor B

Wi-Fi Alliance

The frequency spectrum extends ________. into the ultraviolet range into the gigahertz range into the visible light range to infinity

to infinity

WLANs normally use ________. unlicensed bands licensed bands both A and B neither A or B

unlicensed bands

In CSMA/CA, CS means ________. carrier sense carriage suspension cancel sending counter-source

carrier sense

Frequency is measured in terms of ________. nanometers microseconds microns hertz

hertz

Two access points that operate on the same channel will ________. coordinate their use of the channel bond divide the available spectrum about equally interfere

interfere

What propagation problem is especially bad in moist air? inverse square law attenuation absorptive attenuation electromagnetic interference multipath interference

absorptive attenuation

The messages of VPNs ________. are encrypted share the public network like Internet both A and B neither A nor B

both A and B

Wi-Fi normally uses a(n) ________. dish antenna omnidirectional antenna both A and B neither A nor B

omnidirectional antenna

If there is an access point that serves eight wireless hosts, on how many channels will these devices transmit and receive during the course of an hour or two? 1 2 8 9

1

Wi-Fi Standards come from the ________ Working Group. 802.1 802.11 802.3 802.1X

802.11