Troubleshooting
Network Basics for Support
Translate user complaints into network checks without becoming a network engineer. Includes ping/traceroute interpretation and captive portal issues.
₩390,000 · 4 weeks · Self-paced + labs · Online
What is included
- DNS flush decision tree
- Wi-Fi symptom matrix
- Captive portal troubleshooting
- Basic packet capture intro
- Vendor-agnostic vocabulary
- Escalation criteria card
Outcomes
- Map user symptoms to L1 network checks
- Know when to escalate to network team
- Explain outcomes plainly to non-technical users
Eun-woo Choi
Troubleshooting mentor; ex-enterprise NOC analyst.
FAQ
Minimal; focus on practical checks.
Reviews
DNS flush decision tree — I reference it daily. Clear escalation criteria saved me from rabbit holes.
— Priya