Exam 200-301 topic 1 question 67 discussion

In a three-tier architecture, the core layer is the central part of the network that provides high-speed switching and routing services to other network segments. The core layer is responsible for forwarding data between distribution layers and other network segments, and for ensuring efficient and reliable data transmission. The core layer is designed to be highly available, scalable, and redundant, and typically uses high-speed network switches and routers. The core layer provides the backbone for the network, and is critical to the overall performance and reliability of the system. It is usually placed at the center of the network, and is optimized for speed and low latency to provide high-speed connectivity between the distribution layers. The core layer also provides a centralized point for network management and monitoring.

"Core layer: This layer is considered the backbone of the network and includes the high-end switches and high-speed cables such as fiber cables. This layer of the network does not route traffic at the LAN. In addition, no packet manipulation is done by devices in this layer. Rather, this layer is concerned with speed and ensures reliable delivery of packets."

Cisco is very clear about the purpose of this layer. Its only role is to forward traffic, the fastest it can. Here you don’t apply any policy, as you must try to reduce the load of the core so it can focus on routing.

A-C are correct

this layer is concerned with speed and ensures reliable delivery of packets.

this design is very clear it only meant to forward traffic as fast as possible

A,C Correct

Core – also referred to as the network backbone, this layer is responsible for transporting large amounts of traffic quickly. The core layer provides interconnectivity between distribution layer devices it usually consists of high speed devices, like high end routers and switches with redundant links.

The function of the core layer is to provide fast and efficient data transport. Characteristics of the core layer include the following: The core layer is a high-speed backbone that should be designed to switch packets as quickly as possible to optimize communication transport within the network

given answers are correct

Things like packet inspection is a separate network service and is not part of the 3-tier architecture model. Also think about network design with network virtualization. The inspection of the workload traffic can be completely decoupled of the the physical layers. I would stick to A and C. That fits also to the reference link.

Agreed, answer is A and B

correct answers are a and b