Question 1

The Internet of Things is composed primarily of desktop and laptop computers that have a wireless interface.

Accepted Answer

The Internet of Things (IoT) includes a wide variety of devices that can communicate with each other and the internet, including smartphones, smart home appliances, wearables, industrial sensors, and more. While desktop and laptop computers can be part of the IoT, they are not the primary devices that make up this network.

Question 2

A proximity sensor doesn't require physical contact to be activated.

Accepted Answer

A proximity sensor detects the presence of an object without physical contact. It uses various methods such as infrared, ultrasonic, or electromagnetic fields to detect the object's proximity.

Question 3

What type of network is used in the utility industry to wirelessly collect data from utility meters and can reach distances of dozens of kilometers?
A) PAN
B) LAN
C) NAN
D) SAN

Accepted Answer

The network used in the utility industry to wirelessly collect data from utility meters over long distances is a NAN (neighborhood area network). NANs typically use low-power, wide-area network (LPWAN) technologies such as LoRaWAN, Sigfox, or NB-IoT to transmit data over distances of up to several kilometers. PAN (personal area network) is a network designed for personal devices within a range of typically a few meters. LAN (local area network) is a network typically used within a single building or location. SAN (storage area network) is a specialized network used to connect data storage devices.

Question 4

Which features does Bluetooth 5.1 add to existing Bluetooth technology?
A) low energy
B) burst transfer
C) mesh networking
D) Bluetooth Smart

Accepted Answer

Bluetooth 5.1 adds the feature of mesh networking to existing Bluetooth technology, which allows for greater range and better connectivity in large-scale device networks. It does not add low energy or Bluetooth Smart which were already present in Bluetooth 4.0, and burst transfer is a feature of Bluetooth 5.0.

Question 5

Which type of network might be used to connect utility network nodes together?
A) Field Area Network
B) Neighborhood Area Network
C) Wide Area Network
D) Personal Area Network

Accepted Answer

A Field Area Network (FAN) would be the best choice to connect utility network nodes together as it is designed for large-scale communication between devices in a specific geographic area, such as a city or town. The FAN can support a variety of technologies, including wireless mesh networks, powerline communications, and cellular networks. This network would enable the nodes to exchange information related to the generation, transmission, and distribution of electricity, gas, and water.

Question 6

Which of the following would NOT typically be considered a goal of most IoT technologies?
A) collect data
B) react to data
C) store data
D) communicate data

Accepted Answer

While IoT technologies may involve the collection, reaction, and communication of data, storing data is not typically a goal in and of itself. Rather, data is stored in order to facilitate other goals, such as analysis or decision-making.

Question 7

When processing of collected data occurs where the sensors are located, what type of processing is this?
A) front-end processing
B) cloud processing
C) back-end processing
D) edge processing

Accepted Answer

Edge processing refers to the processing of collected data at the location where the sensors are located, usually at the "edge" of a network. This type of processing allows for quick analysis and decision-making without the need to send all of the data to a centralized location for processing.

Question 8

Which industry sector uses IoT technologies to deploy smart grids?
A) transportation
B) manufacturing
C) energy
D) emergency services

Accepted Answer

The energy sector uses IoT technologies to deploy smart grids. Smart grids use sensors and automation to optimize energy production and distribution, reduce energy waste, and increase efficiency.

Question 9

If you want to build a smart-glove that responds based on the direction and speed a user moves their hand, what sensor should you use?
A) accelerometer
B) photodiode
C) microwave radar
D) biometric

Accepted Answer

An accelerometer is a sensor that measures acceleration, including changes in speed and direction of motion. It would be the best choice for a smart-glove that responds based on the direction and speed a user moves their hand.

Question 10

Which application would be considered a product of IoT?
A) topographic maps
B) DVD video player
C) AM radio broadcast
D) real-time traffic information

Accepted Answer

Real-time traffic information is a product of IoT as it relies on data collected from various sensors and devices embedded in vehicles and roads to provide up-to-date traffic information to users. Topographic maps, DVD players, and AM radio broadcasts do not typically involve IoT technology.

Question 11

The number of "things" connected to the Internet numbers in the 10s of billions.

Accepted Answer

According to various estimates, the number of connected devices or "things" on the Internet is expected to exceed 50 billion by 2020.

Question 12

Which of the following is a benefit of data-driven manufacturing?
A) efficiency from the use of smart meters
B) reduction of waste in material goods
C) efficient traffic management
D) mobile diagnostics for early responders

Accepted Answer

Data-driven manufacturing helps in optimizing processes and reducing waste in material goods by using data analytics to improve production efficiency and resource management.

Question 13

Which of the following is considered a LPWA network technology?
A) LoRaWAN
B) Z-Wave
C) Zigbee
D) Bluetooth

Accepted Answer

LoRaWAN (Long Range Wide Area Network) is a type of LPWA (Low Power Wide Area) network technology designed for long-range, low-power communication over a wide area. Z-Wave, Zigbee, and Bluetooth are also wireless communication protocols, but they are not considered LPWA networks.

Question 14

Which technology is most likely to be associated with IoT?
A) desktop computer
B) smart watch
C) laptop computer
D) supercomputer

Accepted Answer

A smart watch is a wearable technology that is commonly associated with IoT because it can connect to the internet and interact with other devices to perform various functions such as tracking health data, receiving notifications, and controlling smart home devices. Desktop and laptop computers, as well as supercomputers, are not typically associated with IoT as they are not designed to connect to a wide range of devices or sensors in the same way that a smart watch can.

Question 15

Which type of sensor can be used to cause an event to occur when the sun comes up?
A) gyroscope
B) LDR
C) PIR
D) capacitive

Accepted Answer

LDR (Light Dependent Resistor) can be used as a sensor to detect the light intensity. When the sun comes up, the intensity increases and triggers the event. Therefore, LDR is the best choice for this scenario. Gyroscope, PIR, and capacitive sensors are not suitable for detecting sunrise.

Question 16

In which type of system are you most likely to find a microcontroller?
A) embedded
B) database
C) back-end
D) mainframe

Accepted Answer

Microcontrollers are often used in embedded systems, which are designed to perform specific tasks and are typically low-cost and low-power. Examples of embedded systems include household appliances, medical devices, and automotive systems.

Question 17

What type of sensor is used to allow a smart phone screen respond to touch?
A) GPS
B) temperature
C) capacitive
D) passive infrared

Accepted Answer

Capacitive sensors are used in touchscreens, which work by measuring changes in capacitance, which occur when a conductive object, such as a finger, comes into contact with the surface of the screen. This allows the phone to detect where the user is touching and respond accordingly. GPS, temperature, and passive infrared sensors are not used for this purpose.

Question 18

Which type of sensor is most likely to be used in seismology and mining to detect ground movement?
A) geophone
B) proximity sensor
C) photoresistor
D) humidity sensor

Accepted Answer

Geophones are specifically designed to detect ground movement and are commonly used in seismology and mining applications. Proximity sensors, photoresistors, and humidity sensors are not typically used for this purpose.

Question 19

The applications for IoT in transportation are very limited and not worth exploring.

Accepted Answer

IoT has a wide range of applications in transportation such as real-time monitoring of vehicles, predictive maintenance, optimization of routes, and traffic management, among others. These applications can significantly improve efficiency, safety, and reduce costs in the transportation industry.

Question 20

If you want to create a device that can open and close a valve on a pipe using automation, you should use a CPS.

Accepted Answer

The answer of If you want to create a device...

Quiz 13: The Internet of Things

The Internet of Things is composed primarily of desktop and laptop computers that have a wireless interface.

A proximity sensor doesn't require physical contact to be activated.

What type of network is used in the utility industry to wirelessly collect data from utility meters and can reach distances of dozens of kilometers?

Which features does Bluetooth 5.1 add to existing Bluetooth technology?

Which type of network might be used to connect utility network nodes together?

Which of the following would NOT typically be considered a goal of most IoT technologies?

When processing of collected data occurs where the sensors are located, what type of processing is this?

Which industry sector uses IoT technologies to deploy smart grids?

If you want to build a smart-glove that responds based on the direction and speed a user moves their hand, what sensor should you use?

Which application would be considered a product of IoT?

The number of "things" connected to the Internet numbers in the 10s of billions.

Which of the following is a benefit of data-driven manufacturing?

Which of the following is considered a LPWA network technology?

Which technology is most likely to be associated with IoT?

Which type of sensor can be used to cause an event to occur when the sun comes up?

In which type of system are you most likely to find a microcontroller?

What type of sensor is used to allow a smart phone screen respond to touch?

Which type of sensor is most likely to be used in seismology and mining to detect ground movement?

The applications for IoT in transportation are very limited and not worth exploring.

If you want to create a device that can open and close a valve on a pipe using automation, you should use a CPS.