Which technology is used to improve web traffic performance by proxy caching?

Cisco Web Security Appliance (WSA) is a dedicated proxy solution that includes caching functionality, allowing it to store frequently accessed web content locally and serve it quickly to users, thereby improving web traffic performance and reducing bandwidth consumption.

Cisco Firepower is a next-generation firewall (NGFW) and intrusion prevention system (IPS), primarily focused on security, not web caching for performance improvement.

Cisco Adaptive Security Appliance (ASA) is a firewall and VPN concentrator, primarily focused on network security and access control, not web content caching.

Cisco FireSIGHT Management Center is a centralized management platform for Cisco Firepower devices, providing security policy management and analysis, not web caching.