Summary WGU D412 AVN2 TASK 1
TROUBLESHOOTING NETWORK ISSUES
Latest 2026/2027 Update with complete
solutions
Network Troubleshooting & Performance Analysis | Key Domains: Systematic
Troubleshooting Methodologies, Network Monitoring & Diagnostic Tools, Analysis of
Network Metrics, Identification of Common Network Issues, Documentation of Resolution
Procedures
Introduction: This structured summary for WGU's D412 AVN2 Task 1 provides a comprehensive
guide and solution set for troubleshooting network issues, updated for the 2026/2027 academic
year. It emphasizes a logical, layered approach to diagnosing and resolving network problems using
the OSI model, appropriate tools, and performance metrics as required for the competency-based
performance assessment.
Task Structure: Performance Task Guide & Solution Set (COMPLETE SCENARIO SOLUTIONS)
Solution Format: Correct diagnostic steps and solutions appear in bold cyan blue with rationales
explaining the troubleshooting sequence, tool interpretation, metric analysis, and root cause
identification.
Scenario 1: User Cannot Access Internal Web Server
Symptom: User reports they cannot reach http://intranet.company.local
, Step 1: Verify basic IP connectivity
Command: ping 192.168.10.50 (IP of intranet server)
Result: Request timed out.
No basic IP connectivity to the server.
Ping tests Layer 3 (Network) connectivity. Failure indicates a problem below the Application layer
(e.g., IP configuration, routing, or physical issues). Since the server IP is known, we bypass DNS for
initial diagnosis.
Step 2: Check local IP configuration
Command: ipconfig /all (Windows) or ip a (Linux)
Result: User IP = 192.168.20.10/24, Gateway = 192.168.20.1
User is on a different subnet (192.168.20.0/24) than the server (192.168.10.0/24).
TROUBLESHOOTING NETWORK ISSUES
Latest 2026/2027 Update with complete
solutions
Network Troubleshooting & Performance Analysis | Key Domains: Systematic
Troubleshooting Methodologies, Network Monitoring & Diagnostic Tools, Analysis of
Network Metrics, Identification of Common Network Issues, Documentation of Resolution
Procedures
Introduction: This structured summary for WGU's D412 AVN2 Task 1 provides a comprehensive
guide and solution set for troubleshooting network issues, updated for the 2026/2027 academic
year. It emphasizes a logical, layered approach to diagnosing and resolving network problems using
the OSI model, appropriate tools, and performance metrics as required for the competency-based
performance assessment.
Task Structure: Performance Task Guide & Solution Set (COMPLETE SCENARIO SOLUTIONS)
Solution Format: Correct diagnostic steps and solutions appear in bold cyan blue with rationales
explaining the troubleshooting sequence, tool interpretation, metric analysis, and root cause
identification.
Scenario 1: User Cannot Access Internal Web Server
Symptom: User reports they cannot reach http://intranet.company.local
, Step 1: Verify basic IP connectivity
Command: ping 192.168.10.50 (IP of intranet server)
Result: Request timed out.
No basic IP connectivity to the server.
Ping tests Layer 3 (Network) connectivity. Failure indicates a problem below the Application layer
(e.g., IP configuration, routing, or physical issues). Since the server IP is known, we bypass DNS for
initial diagnosis.
Step 2: Check local IP configuration
Command: ipconfig /all (Windows) or ip a (Linux)
Result: User IP = 192.168.20.10/24, Gateway = 192.168.20.1
User is on a different subnet (192.168.20.0/24) than the server (192.168.10.0/24).
