Coursera Answers

Introduction to the Internet of Things and Embedded Systems Quiz Answer

Hello Friends in this article i am gone to share Introduction to the Internet of Things and Embedded Systems Quiz Answer with you..

Enrol Link: Introduction to the Internet of Things and Embedded Systems

Introduction to the Internet of Things and Embedded Systems Quiz Answer


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



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



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.



Module 4 Quiz Answer

Question 1) What protocols are required for Internet communication?

  • TCP or UDP/IP
  • HTTP/Ethernet
  • 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