What is the signal rule when going downstream in a system?

The correct answer indicates that the signal is high at the TAP (Tap Access Point) but low at the CPE (Customer Premises Equipment). This reflects the nature of signal distribution in a network system where signals typically lose strength as they travel over coaxial or fiber optic cables due to factors such as attenuation and interference.

In a cable distribution system, the TAP serves as a point where the signal is split and sent in multiple directions. At the TAP, the signal strength is typically maintained at a higher level to ensure that it can adequately propagate to various downstream locations, including the CPE. However, as the signal travels from the TAP to the CPE, it encounters resistance and may experience loss, resulting in a decrease in signal strength at the CPE.

This behavior is crucial for network technicians to understand as they work to diagnose signal issues and ensure that customers receive adequate signal strength for their services. Maintaining a strong signal at the TAP while monitoring for levels at the CPE helps in troubleshooting and ensuring quality in service delivery.