How many CGU-1B straps replace the top net on a cargo net configuration?

The correct answer is seven. In the context of cargo net configurations, specifically when using CGU-1B straps, it is essential to ensure that loads are secured properly to prevent movement and enhance safety during transport. The configuration typically allows for a specific number of CGU-1B straps to effectively replace the top net, which is designed to secure the cargo against shifting.

Using seven CGU-1B straps provides adequate coverage and stability for the load being transported. It ensures that the cargo remains secure across various transport scenarios, whether by air or ground. This number is based on standard practices and guidelines set forth for handling different types of cargo, especially in military operations where safety and efficiency are paramount.

Other choices do not align with the established guidelines for securing cargo with CGU-1B straps. Using fewer straps might risk inadequate support and safety of the load, while using more than the recommended number can be unnecessary and may complicate the securing process. Thus, seven is the optimal and correct number to use in this scenario.