Exam 6: Wireless Lans I

In the Shannon Equation,if you quadruple the bandwidth in a channel while the signal-to-noise ratio remains the same,you can transmit ________.

In 802.11 networks,the speed I receive on my portable devices is a(n)________.

If the signal strength at 20 meters is 90 mW,the signal strength at 60 meters would be 10 mW.

MIMO ________.

In ________,when a wireless host wishes to send,it first sends a message to the wireless access point asking for permission to send.When the access point sends back a response,the host sending the original message may transmit.All other hosts must wait.

Which of the following is a full standard,according to the book?

Two wireless devices communicate via Wi-Fi Direct using ________.

To transmit very rapidly in RADIO,you need ________.

An extended service set (ESS)is a group of BSSs that ________.

In the Shannon Equation,C is the ________.

A channel extends from 55 MHz to 60 MHz.Its bandwidth is ________.

In 802.11 WLANs,the terms handoff and roaming mean the same thing.

An access point and a host it serves can transmit to each other simultaneously.

Wireless LAN standards are created by the ________ Working Group.

Signals usually ________.

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?

Interference is minimized in ________.