Implementing effective network troubleshooting involves a multi$-$step approach. These steps both provide a framework for troubleshooting and help reduce the amount of time spent resolving problems.$$ Arrange the steps of the troubleshooting model in their correct order.

$-1.2.3.4.5.6.7.$

Establish a plan

$-1.2.3.4.5.6.7.$

Verify system functionality

$-1.2.3.4.5.6.7.$

Test the theory

$-1.2.3.4.5.6.7.$

Document the problem and solution

$-1.2.3.4.5.6.7.$

Implement the solution

$-1.2.3.4.5.6.7.$

Identify the problem

$-1.2.3.4.5.6.7.$

Formulate a theory of probable cause