What is a notable feature of the Routing Engine in Junos?

The Routing Engine in Junos plays a crucial role by running and maintaining routing protocols. This feature is fundamental as the Routing Engine is responsible for processing routing information and making decisions on how data is forwarded through the network. It handles various protocols such as OSPF, BGP, and RIP, ensuring that the network's routing tables are updated and optimized for efficient data transmission.

While aspects like configuring hardware interfaces and managing physical security are important tasks within networking, they are typically handled by different components of the system rather than the Routing Engine itself. Similarly, power management is generally managed at a different layer or by specific hardware functions rather than the Routing Engine. Thus, the most defining feature of the Routing Engine is its integral role in managing and maintaining routing protocols, making the option regarding protocol handling the most accurate.