When you troubleshoot a network problem, it is possible to introduce another problem while attempting to fix the original one. In which step of the troubleshooting process should you be aware of the residual effects that changes might have on the network? Identify the problem Establish a theory of probable cause Test the theory to determine cause Establish a plan of action to resolve the problem Implement the solution or escalate as necessary Verify full system functionality Document findings, actions, and outcomes