Select two functions a firewall can perform in an enterprise network.

Firewalls are critical security devices. They can filter traffic based on URLs, allowing or blocking access to specific websites, which is a common security and content filtering function. Firewalls can also act as site-to-site VPN endpoints, establishing secure tunnels between different network locations in standalone mode. This encrypts traffic between sites. Serving as a remote-access VPN endpoint in multiple-context mode is incorrect because multiple-context mode is typically for device virtualization, not a specific VPN endpoint function. Providing Layer 2 connectivity is a function of switches, not firewalls. Enabling wireless devices to join the network is a function of wireless access points, not firewalls.