8.6.8 Internet Of things (IOT)

Which frequencies does Zigbee operate on? - 1.4 GHz, 90 MHz, and 500 MHz - 2.7 GHz, 400 MHz, and 865 MHz - 2.4 GHz, 900 MHz, and 868 MHz - 2.4 GHz, 500 MHz, and 818 MHz

2.4 GHz, 900 MHz, and 868 MHz Zigbee is a specification based on IEEE 802.15.4. The WPANs operate on 2.4 GHz, 900 MHz, and 868 MHz frequencies.

What is the maximum number of nodes Z-Wave allows on its mesh network? - 232 - 322 - 223 - 231

232 Z-Wave allows up to 232 nodes on the mesh network.

Anabel purchased a smart speaker. She connected it to all the smart devices in her home. Which of the following communication models is she using? - Device-to-cloud - Back-end data-sharing - Device-to-device - Device-to-gateway

Device-to-device The device-to-device, or machine-to-machine (M2M), communication model is meant mostly for systems with devices transferring small data packets to each other at a very low data rate. The devices could include thermostat, light bulbs, door locks, CCTV cameras, refrigerators, and wearable devices. The device-to-gateway model means that the IoT device doesn't directly interact with the cloud or the client. Instead, the device interacts with an intermediate device, or gateway, which then contacts the cloud to send and receive data. The back-end data-sharing model is an expanded version of the device-to-cloud model. This means the data sent from the IoT device to the cloud can be accessed by authorized third parties. The device-to-cloud model means that the devices communicate with the cloud instead of directly with the end user to send data and receive commands.

What are the four primary systems of IoT technology? - Devices, gateway, sensors, and apps - Devices, sensors, apps, and internet - Devices, data storage, remote control, and internet - Devices, gateway, data storage, and remote control

Devices, gateway, data storage, and remote control IoT technology comprises four primary systems: devices, gateway, data storage, and remote control. Sensors are hardware included in many IoT devices. Apps are part of the remote control system. The internet is part of the gateway and data storage systems.

You notice that a growing number of devices, such as environmental control systems and wearable devices, are connecting to your network. These devices, known as smart devices, are sending and receiving data via wireless network connections. Which of the following labels applies to this growing ecosystem of smart devices? - Dynamic environment - Internet of Things (IoT) - Internet of smart devices - The smartnet

Internet of Things (IoT) These smart devices are part of a growing ecosystem known as the Internet of Things (IoT). Environments that contain these types of devices are known as static environments. A static environment is one that never changes (or changes very infrequently) and that a network administrator has very little control over. For example, a smart television in an office has embedded technology that might never be updated, which creates a security hole in the company's network.

What are two major concerns regarding IoT devices? (Select two.) - Privacy - Accessibility - Availability - Short life span - Hacking

Privacy Hacking Hackers and privacy are two majors concerns for IoT users. Because IoT devices are closely connected, all a hacker has to do is exploit one vulnerability to manipulate all the data, rendering it unusable. Also, companies that make and distribute consumer IoT devices could use those devices to obtain and sell users' personal data.

Which of the following are examples of newer devices that are often automated using IoT technology? (Select three.) - Security systems - Home appliances - Headsets - Streaming media devices - Printers - Computer monitors - Tablets

Security systems Home appliances Streaming media devices Streaming media devices with IoT allow you to play content from a device, such as your smartphone, to a speaker or TV as long as both are connected to the same home network. Security systems, such as alarms and locks, can be accessed from an app on your smartphone. Home appliances, such as refrigerators or washing machines, can be accessed from an app on your smartphone as well. Computer monitors are controlled by a computing device (such as a laptop or desktop) and are an output device that's not normally associated with the IoT. While headsets can be wirelessly connected to a device (such as a computer, smartphone, or TV), they normally use Bluetooth instead of the IoT. Tablets are mobile computing devices that normally use Wi-Fi technology to connect to the internet and are not normally associated with IoT technology. Printers can wirelessly connect to a home Wi-Fi network, but they are not normally associated with IoT technology.

Which of the following is considered part of a smart home? - Laptop - Thermostat - Telephone - TV

Thermostat The term smart home refers to a home with devices that can be controlled remotely over the internet with a smartphone or computer. Thermostats can learn the residents' daily routines and adjust the temperature of the home accordingly. Items that typically connect to a video, audio, or data network as a core part of their functionality are not considered part of a smart home.

Match each smart device with its description. Thermostat Switch Bulb Plug Security camera Door lock Speaker/digital assistant - Learns from your habits and schedule, allows you to control the climate in your home remotely, shows you energy consumption in real time, and adjusts itself depending on ambient conditions. - Allows you to control hardwired lights, ceiling fans, fireplaces, small appliances, and garbage disposals. - Uses an RF transmitter. May include such features as motion detection, scheduled recording, remote viewing, and automatic cloud storage. - Easy solution for making small appliances (such as lamps, coffee makers, and toasters) smart. - Can change colors, track motion, stream audio over Bluetooth, and double as a connected camera, but it's only smart when turned on. It doesn't work when turned off. - Uses voice recognition software and activates through a Wake Word or Hot Word. - Uses a wireless protocol and a cryptographic key to execute the authorization process. It can also monitor access and send alerts related to the status of the device.

Thermostat - Learns from your habits and schedule, allows you to control the climate in your home remotely, shows you energy consumption in real time, and adjusts itself depending on ambient conditions. Switch - Allows you to control hardwired lights, ceiling fans, fireplaces, small appliances, and garbage disposals. Bulb - Can change colors, track motion, stream audio over Bluetooth, and double as a connected camera, but it's only smart when turned on. It doesn't work when turned off. Plug - Easy solution for making small appliances (such as lamps, coffee makers, and toasters) smart. Security camera - Uses an RF transmitter. May include such features as motion detection, scheduled recording, remote viewing, and automatic cloud storage. Door lock - Uses a wireless protocol and a cryptographic key to execute the authorization process. It can also monitor access and send alerts related to the status of the device. Speaker/digital assistant - Uses voice recognition software and activates through a Wake Word or Hot Word.

What are the two protocols used most often with IoT devices? (Select two.) - Zerg - Zigbee - Z-Wave - Zensys - Zbot

Z-Wave Zigbee Zigbee and Z-Wave are two radio protocols many IoT devices work with because they are designed for low-data rate, low-power applications. They link all IoT devices to form a mesh network.