Which of the following holds in Bluetooth architectures? (check all that apply)

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BlackTom AI · Accepted Answer

To begin, let's lay out the core concepts of Bluetooth architectures that are being tested here.
Option 1: 'A device can act both as a slave and master' — This is true in Bluetooth. In a piconet, there is one master and up to seven active slaves controlling the channel, and devices can switch roles across different piconets or be assigned different roles as needed. While a single device may not act as master and slave simultaneously within the same piconet, the capability to function as either role in different contexts is a fundamental aspect of Bluetooth architecture.
Option 2: 'Slaves can communicate directly with other slaves' — In a standard Bluetooth piconet, slaves communicate with the master and not with each other directly. The master controls the timing and all data exchanges, so direct slave-to-slave communication in the same piconet is not supported. This makes the statement false.
Option 3: 'Uplink and downlink are separated by different time slots' — Here we’re looking at time-division duplexing in the Bluetooth link. The master allocates time slots and assigns them for transmissions, effectively separating uplink (slave-to-master) and downlink (master-to-slave) traffic in distinct time slots. This statement correctly reflects how the channel is divided temporally, so it is true.
Option 4: 'Slaves can transmit immediately as soon as they have data buffered' — This is not accurate. In a piconet, slaves must wait for the master’s poll before transmitting. The master coordinates access to the medium; immediate transmission by a slave whenever data is buffered is not allowed, so this statement is false.
Collectively, options 1 and 3 describe true aspects of Bluetooth architectures, while options 2 and 4 describe misconceptions about slave communication and media access control.

EE-215 - SEC001 - INTERNET OF THINGS DESIGN Week 11 Quiz

Which of the following holds in Bluetooth architectures? (check all that apply)

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