Cisco Catalyst Series switches offer several benefits including enhanced performance, scalability, and security. They also provide automation features and simplicity in management, making them a suitable choice for various networking needs.

SD-Access enhances network security by enabling a more controlled and automated approach to access management. It allows for better segmentation and policy enforcement, which helps protect sensitive data and resources within the network.

The Catalyst Series includes both fixed and modular switches, designed to meet various needs. Fixed switches are compact and suitable for smaller setups, while modular switches offer versatility and scalability for larger, more complex environments.