DNS¶
Portal | All Topics | Domain: Networking | Tier: 1
Also known as: domain-name-system, coredns, dig, nslookup, resolve, dns-ops
📘 Topic Packs¶
| Asset | Level | Time | Status |
|---|---|---|---|
| AWS Route 53 | L2 | 3h | solid |
| DHCP & IP Address Management | L1 | 4h | solid |
| DNS Deep Dive | L1 | 4h | solid |
| DNS Operations | L2 | 4h | solid |
| Networking Deep Dive | L1 | 6h | solid |
🏋️ Exercise Sets¶
| Asset | Level | Time | Status |
|---|---|---|---|
| Incident Simulator (18 scenarios) (CLI) | L2 | 4h | solid |
⚡ Drills¶
| Asset | Level | Time | Status |
|---|---|---|---|
| Networking Drills | L1 | 30m | solid |
🎯 Scenarios¶
| Asset | Level | Time | Status |
|---|---|---|---|
| Scenario: DNS Looks Fine but App Fails | L2 | 20m | solid |
📋 Runbooks¶
| Asset | Level | Time | Status |
|---|---|---|---|
| Runbook: DNS Resolution Failure | L1 | 15m | solid |
📝 Assessments¶
| Asset | Level | Time | Status |
|---|---|---|---|
| Skillcheck: Networking Fundamentals | L1 | 30m | solid |
🔍 Case Studys¶
| Asset | Level | Time | Status |
|---|---|---|---|
| Case Study: CoreDNS Timeout Pod DNS | L2 | 30m | solid |
| Case Study: DNS Looks Broken — TLS Expired, Fix Is Cert-Manager | L2 | 30m | solid |
| Case Study: DNS Resolution Slow | L1 | 30m | solid |
| Case Study: DNS Split Horizon Confusion | L2 | 30m | solid |
| Ops Archaeology: The 5% That Can't Resolve | L2 | 30m | solid |
Related Topics¶
- TCP/IP (4 shared assets)
- TLS & PKI (3 shared assets)
- Kubernetes Networking (3 shared assets)
- VLANs (2 shared assets)
- Routing (2 shared assets)
- Linux Networking Tools (2 shared assets)
- LACP / Link Aggregation (1 shared asset)
- MTU (1 shared asset)
- Cisco CLI (1 shared asset)
- DHCP & IP Address Management (1 shared asset)