In Bluetooth, which device type initiates communication in a piconet?

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BlackTom AI · Accepted Answer

To tackle this question, we examine what initiates communication in a Bluetooth piconet. 
Option a: 'Scatternet controller' – A scatternet controller is not a standard concept that initiates master-slave roles within a single piconet; scatternet relates to linking multiple piconets, not initiating a basic piconet connection. This makes it an unlikely correct choice. 
Option b: 'Any active slave' – In Bluetooth piconets, slaves do not initiate the master–slave connection; they respond to commands from a master. Therefore, this option misstates the initiation process and is incorrect. 
Option c: 'First device powered on' – Powering on a device does not deterministically designate initiation of the piconet; while the first powered-on device may become the master in some implementations, the standard criterion is the master-slave role selection during pairing, not simply which device powered up first. This makes the statement imprecise and not reliably correct. 
Option d: 'Master device' – The master device controls the piconet's timing and manages communication with the slave devices; it is responsible for initiating and coordinating communication within the piconet. This aligns with Bluetooth architecture, where the master initiates the connection and timing, making it the correct option. 
In summary, the conceptual core is that the master governs the piconet’s communication, while slaves respond to the master. The other options either misstate the roles or describe scenarios that do not define the initiating party in a piconet.

Mobile and Wireless Technology (082025-NIO) Chapter 6 - Other Current Technologies

In Bluetooth, which device type initiates communication in a piconet?

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