Internet of Things (IoT) Practice Exam

What can be used to increase signal integrity in IoT devices?

1. Using longer wires

2. Implementing data encryption

3. Adding more sensors

4. Reducing the number of devices

The correct answer is: Implementing data encryption

The focus on increasing signal integrity in IoT devices is crucial for ensuring reliable communication and data transmission between devices. Implementing data encryption does not directly enhance signal integrity, but rather protects the data being communicated from unauthorized access. Signal integrity primarily concerns itself with the quality and accuracy of the signals being transmitted. Using longer wires, while it might seem intuitive to extend the reach of a connection, can actually lead to increased resistance, capacitance, and potential noise interference, which would negatively impact signal integrity. Adding more sensors does not contribute to improved signal integrity; in fact, it can complicate the communication channels and introduce further potential for signal degradation. Reducing the number of devices can lead to improved signal integrity by decreasing the overall load on the network and minimizing interference, as fewer devices mean less data traffic and potential crosstalk. However, this is not the option selected. In summary, while the correct option, data encryption, is important for security, the effective techniques for enhancing signal integrity typically involve optimizing hardware design and reducing interference in data transmission rather than focusing solely on encryption methods.