Author: Anonymous

What is the positive difference in amplitude between two signals?

The purpose of the 802.11 PHY layer is to format packets to be received by the corresponding network protocol on the receiving device.

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

In FHSS, the amount of time needed to move from one frequency to another is the ____ time.

The strength of a signal from an omnidirectional antenna flows out 90 degrees from the antenna’s orientation.

Which is true of passive scanning?

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

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

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