What is the function of a PAC file on a Cisco WSA?

Question

Options

• AThe file allows redirection of web traffic to a specific proxy server
• BThe file is mandatory for a transparent proxy to redirect user traffic
• CThe file provides instructions about which URL categories are permitted
• DThe file is mandatory for an explicit proxy to forward user traffic

• A
  89% (39)
• B
  7% (3)
• C
  2% (1)
• D
  2% (1)

Explanation

A PAC (Proxy Auto-Configuration) file is a JavaScript file that instructs web browsers on how to route web traffic - specifically, which proxy server to use for a given URL or whether to connect directly. On the Cisco WSA, the PAC file is hosted and served to client browsers, redirecting their web traffic to the WSA acting as a proxy. This is primarily used in explicit proxy deployments where clients must be told where the proxy is. Option B is incorrect because transparent proxies intercept traffic at the network level without a PAC file. Option C is incorrect because PAC files deal with proxy routing, not URL category permissions. Option D is incorrect because explicit proxies can function without a PAC file if clients are manually configured.

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