If two DSSS access points are placed on the same channel in the same physical space, which of the following results will occur? Select three.
Answer(s): B,C,E
Co-channel interference results from two APs transmitting on the same channel in the same area. In a typical 802.11 wireless network, APs continually broadcast a signal, and any wireless client within range can lock onto that signal to make a connection. But when APs are placed close enough together to provide continuous coverage over a large area, it's possible (or even likely) that some APs will generate signals that interfere with other APs. When this happens, two or more APs transmit packets at the same time on the same channel, corrupting packets and causing clients to experience transmission delays and lower performance. In addition, clients located equidistant between two APs on the same channel may flip-flop, not knowing whether to access one or the other.
http://wirelessreview.com/infrastructure/technology/wlan_power_architecture_041105/
Speeds of up to Mbps are allowed within the IEEE 802.11a standard.
Answer(s): B
You are administering a network with wireless LAN components for .com. The wireless portion of the network is configured using statically assigned WEP keys stored on each station's wireless PC Card. It has been reported to you that one of the wireless client computers containing a wireless PC Card has been stolen. What reasonable actions could be taken to restore the wireless LAN to the former level of security? Select two.
Answer(s): A,C
Before performing a site survey for a hospital, the network manager notifies you that there are connection-oriented medical applications used across the hospital network. Because the application is connection-oriented, it will be sensitive to service disruptions. For this reason, it is particularly important to locate sources of RF interference and RF dead spots. Which of the following items put the application at risk of time-outs? Select three.
Answer(s): C,D,E
Which of the following technologies are components used as part of security solution in a wireless LAN? Select three.
Answer(s): A,C,E
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