CompTIA Network+ Practice Test

What does Transmit Power Control (TPC) help prevent?

1. Overlapping Wi-Fi channels

2. Wi-Fi network congestion

3. Conflicts with satellite services

4. Interference from neighboring devices

The correct answer is: Conflicts with satellite services

Transmit Power Control (TPC) is a technique used primarily in wireless communication systems to adjust the power of the transmitted signal. Its main goal is to optimize the network's performance and maintain communication quality. TPC helps prevent issues such as signal interference and congestion by regulating the amount of power used for transmission, ensuring that devices only transmit at the necessary strength. The correct understanding is that TPC is designed to minimize interference, particularly in dense environments with many devices, which can include conflicts with other technologies like satellite services. By controlling the transmission power, TPC can reduce the risk of signals overlapping and interfering with other services that operate in close frequency ranges, such as satellites. Other options might not be entirely in the scope of what TPC addresses. For instance, while TPC can indirectly contribute to reducing network congestion and managing overlapping channels by controlling output power, it does not directly manage channel allocation or bandwidth in the way that might be needed to address those issues comprehensively. Similarly, conflicts with neighboring devices might be a result of signal interference, which TPC can help mitigate, but the primary focus remains on optimizing power for efficient communication, particularly in relation to conflicting services.