Intermediate · Evening
Network Troubleshooting for Support
DNS, DHCP, Wi‑Fi, and VPN symptoms explained for support specialists—not network engineers.
Duration: 8 weeks Schedule: Mon/Wed 18:30–21:00 Level: Intermediate Price: ¥118,000 JPY
Translate user-reported connectivity issues into actionable checks. Learn ping, traceroute, and log reading at a depth appropriate for tier-one and tier-two support handoffs.
Included in this course
- Symptom-to-check decision trees
- Captive portal and guest Wi‑Fi scenarios
- DNS failure reproduction in lab VLAN
- VPN split-tunnel common failure modes
- Packet capture introduction (read-only)
- Handoff templates for network teams
Outcomes
- Isolate L2 vs L3 symptoms in under 15 minutes
- Attach relevant logs to escalation tickets
- Explain findings without jargon to end users
Hiroshi Watanabe
CCNP; taught support bridge programs for telecom vendors.
FAQ
A laptop with admin rights for lab VM access is required. We provide cloud lab environments.
Reviews
The DNS lab finally made traceroute output click for me. Handoff template saved our network team hours.
Dense week five on VPN—worth it, but plan extra study time.