Internet of Things and Applications

Infrared (IR) is the odd one out because it's not a wireless networking protocol standard like the others. Zigbee, Wibree (later Bluetooth Low Energy), and Bluetooth are all short-range wireless communication protocols, while Infrared is a line-of-sight light-based communication technology.

Infrared is the odd one out because it's an optical line-of-sight technology requiring direct visibility between devices. Zigbee, Wibree (later renamed Bluetooth Low Energy), and Bluetooth are all wireless radio frequency protocols operating in the 2.4GHz band that don't require line of sight and can work through obstacles.

The android.bluetooth API enables applications to perform tasks like scanning for local Bluetooth devices, establishing connections, and managing data transfer between them. It cannot control, enable, or disable applications running on external devices, rendering those options incorrect.

WPA (Wi-Fi Protected Access) replaced the broken WEP encryption and provides significantly stronger security through TKIP/AES encryption and improved authentication. WEP is notoriously insecure and easily cracked, Bluetooth has security vulnerabilities, and microwave communications isn't a standard wireless networking protocol.

This is correct term for sensor nodes in sensor networks.

All are correct for Orbot application in Android devices.

These are correct statements about Sensor manager.

IEEE 802.11a is a physical layer standard that works in unlicensed 5-GHz radio band using Orthogonal Frequency Division Multiplexing.

It is incorrect statement about an IEEE standard 802.11n since it uses the 2.4 GHz and 5 GHz frequency bands.

It is incorrect statement. The Wi-Fi IEEE standard 802.11a is more expensive than all other standards.

Bluetooth is Short-range radio technology used to perform synchronization between net devices and other devices.

A Bluetooth technology is a high speed low powered wireless technology link that is designed to connect phones or other portable equipment together. It is a specification (IEEE 802.15.1) for the use of low power radio communications to link phones, computers and other network devices over short distance without wires.

Bluetooth technology is a short-range wireless communications technology to replace the cables connecting electronic devices, allowing a person to have a phone conversation via a headset, use a wireless mouse and synchronize information from a mobile phone to a PC, all using the same core system.

The Bluetooth RF transceiver (or physical layer) operates in the unlicensed ISM band centered at 2.4 gigahertz (the same range of frequencies used by microwaves and Wi-Fi). The core system employs a frequency-hopping transceiver to combat interference and fading.

Technology contributes to the safety and security of vacation rentals by implementing smart locks, security cameras, motion sensors, and emergency alert systems, providing peace of mind to both property owners and guests.

M2M communication has a wide range of applications, including smart homes, industrial automation, healthcare, transportation, and many more.

M2M communication relies on a combination of technologies, including wireless communication, sensor networks, embedded systems, and cloud computing.

IoT platforms play a crucial role in M2M communication by providing a central platform for managing and monitoring M2M devices, enabling data exchange, and ensuring security and privacy.