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Which is caused by small objects or rough surfaces as an RF signal travels through the air?

What can be done when the signal from an isotropic radiator needs to reach a specific receiver without increasing the IR power which may interfere with other antennas in different locations?

Which is true of passive scanning?

____ effectively prevents collisions because every device must wait until it receives permission before it can transmit.

Antennas play a vital role in receiving signals, but no role in transmitting.

Highly-directional antennas are generally concave dish-shaped devices.

What are the two components that make up the Windows 7 wireless Hosted Network function?

Because of the relatively high speeds achieved with FHSS, it is widely implemented in WLAN systems.

Which of the following is a viable option for a large enterprise or campus wireless network?

Following authentication, if the access point accepts the wireless device, it reserves memory space in the AP and establishes a(n) ____ ID for it.