An 802.11G AP employs OFDMA. What is its role in enhancing the performance?
What will be an ideal response?
OFDMA allows the use of multiple narrow sub-bands which can be allocated to
a single or multiple users. The narrowband minimizes fading effects when the
electromagnetic waves are propagated while the whole bandwidth is being used
in parallel data transfer. Both sending and receiving equipments are also
cheaper while making full bandwidth available.
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The civilian labor force includes
A) The number of employed and unemployed persons in the economy. B) The number of employed persons. C) The number of people in the Armed Services. D) None of the above.
Which of the following is true of the current in a capacitive circuit?
a. It leads the voltage. b. It lags the voltage. c. It is the same as the voltage. d. It counteracts the voltage.
What are the tanks in an indoor system usually constructed of?
What will be an ideal response?
There are generally three types of positive displacement pumps that are in use today: the vane pump, the ____ pump, and the piston pump.
A. centrifugal B. impeller C. gear D. radial axis