$1.$ The $802\mathrm{.}11$ Wireless LANs uses the medium access protocol $($CSMA$/$CD$)$

Select One

True

False

$2.$ satellites Communications launched in $1970$s

Select One

True

False

$3.$ Global positioning system $($GPS$)$ uses has $50$ satellites in ten MEO orbits. Select One

True

False

$4.$ The maximum data rate for $3$G is:

Select One

$1$ Mbps

$2$ Mbps

$3$ Mbps

$4$ Mbps

$5.\_\_\_\_\_$ is a satellite$-$based tracking system that enables the determination of a person$$s position.

Select One

Bluetooth

wireless application protocol

global positioning system $($GPS$)$

Global System Mobile $($GSM$)$

$6.$ Which of the following is not a wireless communication technology?

Select One

Satellite communication

WiFi

CSMA$/$CD

Bluetooth

$7.$ In a piconet, there can be up to $\_\_\_\_\_$ parked nodes in the net.

Select One

$63$

$127$

$255$

$8$

$8.$ The amount of time it takes for one repetition of the signal is known as:

Select One

Frequency

Period

Wavelength

None of the above

$9.$ In satellite communications, Kepler's law is used for:

Select One

Calculating the distance of the satellite from earth surface.

Calculating the distance of the satellite from earth core

Calculating the orbit period of a satellite.

Calculating the round trip signal propagation delay.

$10.$ Bluetooth uses

Select One

orthogonal frequency division multiplexing

frequency hoping spread spectrum

time division multiplexing