SRWC Unit 1- Quiz 1

What is meant by Wireless Communication?

• Sending messages through physical cables.

• Transmitting/receiving voice and data using wires.

• Transmitting/receiving voice and data using electromagnetic waves in free space.

• Either Transmitting or receiving only data using electromagnetic waves in free space

Why is Wireless Communication preferred?

• Limited coverage and high cost.

• Dependence on physical cables.

• Unpredictable channel and low equipment cost.

• Mobility and easier configuration.

What is the characteristic of Short Range Radio?

• RF output ranging from several Watts to Kilowatts.

• use licensed spectrum

• RF output ranging from several microWatts to 100 milliWatts.

• Communication range of several kilometers.

What are the reasons for the spread of Wireless technology?

• Dependence on physical cables, noisy channels, and high equipment cost.

• Limited spectrum availability, high cost, and low power transmitters.

• Use of carrier pigeons, smoke signals, and wired connections.

• Employment of higher frequencies, SSD technology, compact antennas, SAW components, digital modulation.

What are the elements of a Wireless Communication System?

• Data source, RF generating section, RF conduction and radiation, Radio channel, Receivers, Power supply.

• Data source, Modem, Fiber optic cables, Satellite dish, Amplifier, Battery.

• Antenna, Router, Ethernet cable, Modulator, Demodulator, Solar panel.

• Transmitter, Receiver, Telephone line, Power grid, Microphone, Speaker.