Core Layer Functions

AC

In a three-tier network architecture, the core layer is responsible for performing specific functions that are crucial for the overall network performance. These functions include:

A. Provide uninterrupted forwarding service: The core layer is responsible for providing high-speed and uninterrupted forwarding services to the network. It ensures that data packets are forwarded between the distribution and access layers without any interruption or delay.

C. Ensure timely data transfer between layers: The core layer also ensures that data transfer between the different layers of the network is timely and efficient. It acts as a high-speed transit network, ensuring that data packets are transferred quickly and efficiently between the distribution and access layers.

B, D, and E are not functions of the core layer in a three-tier network architecture.

B. Inspect packets for malicious activity: The core layer does not perform packet inspection for malicious activity. This function is usually performed by security devices such as firewalls, intrusion detection systems, and antivirus software.

D. Provide direct connectivity for end-user devices: The core layer does not provide direct connectivity for end-user devices. End-user devices are typically connected to the access layer, which provides access to the network.

E. Police traffic that is sent to the edge of the network: The core layer does not police traffic that is sent to the edge of the network. This function is typically performed by security devices such as firewalls and intrusion prevention systems.

In summary, the core layer in a three-tier network architecture is responsible for providing uninterrupted forwarding services and ensuring timely data transfer between layers.