Subtracting passive cable system attenuation from the link loss budget gives you what?

Study for the BICSI OSP Design Test. Prepare using multiple choice questions, with hints and explanations to enhance understanding. Succeed in your exam journey!

The main idea is to understand how the total allowance for loss (the link budget) is allocated. The link budget represents the total loss a signal can tolerate from transmitter to receiver to still meet the required performance. The passive cable system attenuation accounts for the loss caused by cabling and passive components. Subtracting that cabling loss from the overall link budget leaves the remaining headroom—the cushion available to accommodate other losses and tolerances in the system. That remaining headroom is called the system performance margin. It shows how much performance margin you have to absorb variations in active equipment, connectors, aging, temperature, or future upgrades while still meeting the minimum receiver sensitivity. Bandwidth and latency are unrelated to this budgeted loss calculation, and the term most closely matching the remaining cushion after accounting for passive loss is system performance margin.