Contract position.

First, a written screen was administered, which took about two hours to complete. Nothing in it was difficult to research and answer if you didn't already know it.

In the second stage, a phone interview, the following situation was presented:

You have 5 Apache web servers sitting behind a load balancer. They are pegged as far as load and are not responding to page requests within agreed-to SLAs.

Tell me the steps you'd take to debug the problem.