If you will proxy four different applications, how many proxy programs will you need?

• A. 1
• B. 2
• C. 4
• D. 8

Answer: (C)

The main idea is that each application usually needs its own proxy to route and manage its traffic independently. Proxies act as intermediaries between clients and the target service, and giving each application its own proxy lets you apply per-app rules, monitor and isolate traffic, and prevent cross-app interference. So for four different applications, you would deploy four proxy programs. While a single proxy can be configured to handle multiple apps in a more complex setup, the straightforward interpretation assumes one proxy per application, which is why the count is four.