Management has requested that all web traffic be filtered through a proxy without the client's knowledge. Which mode does an engineer use to design the web proxy to accomplish this task without…

Explicit mode with PAC files requires the browser or OS to be configured with the PAC file URL, meaning the client is aware of and must be set up to use the proxy.

Transparent mode without WCCP requires static policy-based routing or manual network reconfiguration to redirect traffic, and cannot scale dynamically across the network.

WCCP (Web Cache Communication Protocol) allows a router or switch to automatically redirect web traffic destined for port 80/443 to the proxy server; combined with transparent proxy mode, the client browser requires zero configuration and is unaware traffic is being inspected.

Explicit mode without PAC files requires manually entering the proxy server address and port in every client browser, which is the opposite of transparent operation.