ACL Apic-EM Path on the TCP/IP Layer

D

ACL stands for Access Control List, which is a security feature used to control network traffic based on a set of predefined rules.

APIC-EM is a Cisco Application Policy Infrastructure Controller Enterprise Module, which provides centralized management for enterprise networks.

TCP/IP is a suite of protocols used to establish communication between devices on a network. It is composed of four layers: the Application layer, the Transport layer, the Internet layer, and the Network Access layer.

ACLs are typically implemented at the network layer (Layer 3) or the transport layer (Layer 4) of the TCP/IP model.

Therefore, the correct answer to the given question is D. Layer 4. ACLs operate at the Transport layer of the TCP/IP model, which includes protocols such as TCP and UDP, and they are used to filter traffic based on source and destination IP addresses, ports, and other criteria. APIC-EM uses ACLs to control traffic flow within an enterprise network by allowing or blocking traffic based on policies defined by network administrators.