8.6.8 Internet of Things (IoT)
Which frequencies does Zigbee operate on?
2.4 GHz, 900 MHz, and 868 MHz
What is the maximum number of nodes Z-Wave allows on its mesh network?
232 Z-Wave allows up to 232 nodes on the mesh network.
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.
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-device
What are the four primary systems of IoT technology?
Devices, gateway, data storage, and remote control
Plug
Easy solution for making small appliances (such as lamps, coffee makers, and toasters) smart.
What are two major concerns regarding IoT devices? (Select two.)
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 Streaming media devices Home appliances
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.
Security camera
Uses an RF transmitter. May include such features as motion detection, scheduled recording, remote viewing, and automatic cloud storage.
What are the two protocols used most often with IoT devices? (Select two.)
Zigbee Z-Wave 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.
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?
Internet of Things (IoT)
Which of the following is considered part of a smart home?
Thermostat
Match each smart device with its description.
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.
