Cisco Certified Internetwork Expert (CCIE) Practice Test

Which option best describes RPL?

1. RPL stands for Routing over Low-power Lossy Networks that use link-state LSAs

2. RPL stands Routing over Low-power Lossy networks that use distance vector DOGAG

3. RPL stands for Routing over low priority links that use link-state LSAs

4. RPL stands for Routing over low priority links that use distance vector DOGAG

The correct answer is: RPL stands Routing over Low-power Lossy networks that use distance vector DOGAG

RPL stands for Routing Protocol for Low-power and Lossy Networks. It is designed specifically for the Internet of Things (IoT), addressing the challenges of routing data in networks that are characterized by constrained devices and lossy links. The focus on low-power and lossy characteristics makes RPL particularly suited for various applications, including smart cities, industrial monitoring, and home automation. An essential aspect of RPL is that it utilizes a routing mechanism based on distance vector principles, which allows it to efficiently manage the routing of packets through potentially unreliable and variable-quality links. The term DOGAG in this context, although not widely recognized, is likely intended to represent a conceptual approach that could refer to distance vector protocols or management strategies. Understanding RPL as a distance vector routing protocol helps to clarify its functionality in real-world IoT applications, aligning with its operational objectives to optimize routes while accommodating the limitations posed by low-power devices and intermittent connectivity conditions. On the other hand, the alternative options incorrectly describe RPL by misrepresenting its core focus and routing methodology. Specifically, RPL does not pertain to routing over low priority links nor does it utilize link-state routing mechanisms, which are generally more resource-intensive and less suitable for the constraints typical of low-power and