Which items are important to check for certifying the reliability of the customer drop system?

To ensure the reliability of the customer drop system, installing high pass filters and monitoring for signal leakage is particularly important. High pass filters help block any unwanted lower frequency signals that can interfere with the transmission of higher frequency data, which is critical for maintaining signal quality. In addition, monitoring for signal leakage is essential as it can lead to loss of signal integrity and potential breaches of system security. Identifying and addressing any leakage ensures that the signals are contained within the system, which is crucial for both performance and regulatory compliance. Therefore, option B addresses key aspects that directly impact the data transmission quality and system performance in a broadband installation.