Troubleshooting Methodology

Question 1

First step of Network Troubleshooting methodology?

Answer 1

Identify the problem
- What happened?
- What was the status before?
- What was the status after?
- Change in the system?

Question 2

Second step of Network Troubleshooting methodology?

Answer 2

Establish a theory of probable cause
- Question the obvious
- Use OSI model (top to bottom or bottom to top)

Question 2

Third step of Network Troubleshooting methodology?

Answer 2

Test the theory to determine the cause

Question 2

Fourth step of Network Troubleshooting methodology?

Answer 2

Establish a plan of action to resolve the problem

Question 2

Fifth step of Network Troubleshooting methodology?

Answer 2

Implement the solution
- Repair, replace, workaround

Question 2

Sixth step of Network Troubleshooting methodology?

Answer 2

Verify full system functionality
- Confirm solution works

Question 3

Seventh step of Network Troubleshooting methodology?

Answer 3

Document findings, actions outcome, and lesson learned

Question 4

What are the security technologies?

Answer 4

• Firewall - SNMP
• IDS & IPS - IP Security
• Remote Access - Network Logging
• VPN - SIEM