Chapter 19
Network Troubleshooting
THE FOLLOWING COMPTIA NETWORK+ EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:
✓ 3.2 Compare and contrast business continuity and disaster recovery concepts.
- NIC teaming
✓ 5.1 Explain the network troubleshooting methodology
- Identify the problem
- Gather information
- Duplicate the problem, if possible
- Question users
- Identify symptoms
- Determine if anything has changed
- Approach multiple problems individually
- Establish a theory of probable cause
- Question the obvious
- Consider multiple approaches
- Top-to-bottom/bottom-to-top
- OSI model
- Divide and conquer
- Test the theory to determine the cause
- Once the theory is confirmed, determine the next steps to resolve the problem
- If the theory is not confirmed, reestablish a new theory or escalate
- Establish a plan of action to resolve the problem and identify potential effects
- Implement the solution or escalate as necessary
- Verify full system functionality and, if applicable, implement preventive measures...
