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Introduction to the Internet of Things and Embedded Systems Quiz Answer

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Module 1 Quiz Answer

Question 1) My watch displays the current weather downloaded from the Internet. My watch is an IoT device.

• True
• False

Question 2) Which of the following could be an IoT device?

• a lamp
• a pen
• a couch
• all of the above

Question 3) An IoT device can most easily be differentiated from a standard computer based on

• memory capacity
• computational performance
• interface with the user and the world
• weight/size

Question 4) The following trend is NOT related to the growth in IoT technology:

• Decrease in computer size over time.
• Decrease in computer cost over time.
• Increase in computer monitor size over time.
• Increase in computer performance over time.

Question 5) IoT devices are likely to be more vulnerable to cyberattacks than standard computers.

• True
• False

Question 6) Which of these security approaches is feasible for most IoT devices?

• Use of anti-virus software.
• Use of an internal firewall.
• Regular installation of product firmware updates.
• Complete separation of the device from the Internet.

Question 7) IoT devices gather private information about users. Which statement is most true about the security of that data?

• Users can ensure security of collected data by encrypting it manually.
• Users can sue data collecting agencies if their data is not held securely.
• Users must rely on data-collecting agencies to securely store and transmit their data.
• Most data gathered by IoT devices is safe because IoT devices are not a target of hackers.

Question 8) Although people are aware of the dangers of cyberattacks, they often do not understand the risks to IoT devices.

• True
• False

 

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Module 2 Quiz Answer

Question 1) A light sensor (photoresistor) is an analog sensor.

• True
• False

Question 2) A microphone is a digital sensor.

• True
• False

Question 3) A push button is an analog sensor.

• True
• False

Question 4) A keyboard is a digital sensor.

• True
• False

Question 5) Which of the following components are actuators? Select all that apply.

• an LED
• a servo motor
• a CMOS camera
• a thermometer
• a heating element

Question 6) The component of an embedded system that executes a program is:

• an FPGA
• a microcontroller
• a sensor/actuator pair
• an analog-to-digital converter

Question 7) An analog-to-digital converter is common in embedded systems because

• analog computation is faster than digital.
• many sensors are analog while the microcontroller is digital.
• analog computation uses less battery power than digital computation.
• digital data is generally more compact than analog.

Question 8) Consider the anti-lock braking system in a car. What are the main sensors and actuators of this system from the perspective of the driver?

• brake pedal and steering wheel
• accelerator pedal and turn signal
• gearshift and dashboard monitor
• brake pedal and brake calipers and pads

 

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Module 3 Quiz Answer

Question 1) Under what conditions should an integrated circuit be used in an IoT device?

• When lowest power is required.
• When highest performance is required.
• When the function is already commonly available as an integrated circuit.
• All of the above.

Question 2) Given a choice between implementing a function as an integrated circuit (in hardware) or as a program (in software), what factor needs to be considered the least?

• The physical look of the final device.
• The performance required of the final product.
• The cost of manufacturing the integrated circuit.
• The required time to design the integrated circuit vs. the program.

Question 3) Generally, in a computer-based system, main memory is much larger than cache.

• True
• False

Question 4) What is the fastest type of storage in a computer-based device?

• Cache
• Flash
• Registers
• Main memory

Question 5) Which statement is false?

• Assembly code is easier to read than machine code.
• A programmer may write assembly code directly if performance is very important.
• High-level languages are generally easier to program in than assembly language.
• Machine language is universal, allowing programs written in machine language to be executed on any microprocessor.

Question 6) What does an assembler generate?

• Machine code from assembly code.
• Assembly code from machine code.
• Assembly code from a high-level language.
• Machine code from a high-level language.

Question 7) Compiled code generally executes faster than interpreted code.

• True
• False

Question 8) Which of the following is NOT a benefit of using an operating system?

• Many programs can execute on the same processor at the same time.
• The operating system enables separation between multiple processes.
• The frequency of the microcontroller clock can be significantly increased.
• The operating system provides a convenient programming interface to the hardware.

 

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Module 4 Quiz Answer

Question 1) What protocols are required for Internet communication?

• TCP or UDP/IP
• HTTP/Ethernet
• FTP/HTTP
• Ethernet/Token Ring

Question 2) Which network device copies packets onto all ports?

• bridge
• router
• hub
• switch

Question 3) What is the protocol associated with the world wide web?

• HTTP
• SMTP
• FTP
• TCP

Question 4) A MANET protocol is likely to differ from a typical LAN protocol because a MANET protocol will

• have higher bandwidth than a typical LAN protocol.
• consume less power than a typical LAN protocol.
• ensure greater connectivity than a typical LAN protocol.
• support more nodes than a typical LAN protocol.

Question 5) The function of a packet header is to

• mark the ending of the previous packet.
• store an encrypted version of the packet’s contents.
• contain packet information generated by a protocol layer.
• all of the above.

Question 6) A packet sniffer is a tool that can be used to record local traffic on a network.

• True
• False

Question 7) A hub can be used to communicate between two LANs with different protocols.

• True
• False

Question 8) In the HTTP protocol, a request message is sent by a web client to a web server.

• True
• False