Self-Assessment Quiz

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The learning objectives of this self-assessment are to help you validate your understanding of the concepts relating to the radio frequency (RF) signal path and medium access control (MAC) protocols.

The quiz is intended to be a formative assessment to guide your learning. The automated feedback you get at the end of the quiz will point you to the sections of the material you should focus on for better grasp of the concept related to each question.

In the receive signal path, which of the following is a component you might find in a RF transceiver hardware implementation immediately after the antenna? *

0 points

Digital signal processor (DSP)

Analog-to-digital converter (ADC)

Radio frequency (RF) switch

Binary-coded decimal (BCD)

Select the components you are likely to find on each of the receive and transmit signal paths of a low-power RF transceiver *

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Low-noise amplifier (LNA)

Power amplifier (PA)

Mixer

ADC

DAC

Receive path

Transmit path

What is the primary objective of a medium access control (MAC) protocol? *

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Which of the following are reasons why an RF transceiver might not be able to detect that another transceiver is currently transmitting and that signal is being received by a given destination receiver? *

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RF transceivers can only transmit and cannot receive

The "hidden terminal problem" means that two transmitters that are mutually unreachable might both be able to reach a third receiver

RF systems typically cannot detect if another device is transmitting if they use an RF switch on the transmit and receive paths

RF transceivers can only receive and cannot transmit

Required

Where do collisions occur in a wireless communication system? *

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In the ether

In the air

At the transmitter

At the receiver

At all transmitters

Which two of the following are the two main top-level classifications of medium access control (MAC) protocols *

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Carrier-sense multiple access (CSMA)

Unslotted

Time-division multiple access (TDMA)

Slotted

Pump slowly fetch quickly (PSFQ)

Which of the following are examples of sub-classifications of slotted medium access control (MAC) protocols *

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Pump slowly fetch quickly (PSFQ)

Carrier-sense multiple access (CSMA)

Time-division multiple access (TDMA)

Wavelength-division multiplexing (WDM)

Required

Which of the following medium access control (MAC) protocols types could you find in both slotted as well as unslotted protocols? *

0 points

Carrier-sense multiple access (CSMA)

Time-division multiple access (TDMA)

Unslotted carrier-sense multiple access (CSMA)

Required

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