← all cheat sheets
PRACTICE PLAN
Network Engineer
Focused Refresher Track
18 sheets — OSI foundations, switching, routing/WAN, wireless, role interview prep, and a mock interview drill, without the security-ops material. For when you want to sharpen the networking side specifically.
Full Target-Role Track
Network Engineer
Firewall / Security Engineer
SOC / Security Ops Analyst
DevOps Engineer
0 of 0 complete
01
OSI Foundations
4 sheets
1. Layer 1 — Physical
Cabling, signaling, ports, link lights.
OPEN →
2. Layer 2 — Data Link
Switching, VLANs, Spanning Tree.
OPEN →
3. Layer 3 — Network
IP addressing, routing, subnetting.
OPEN →
4. Layer 4 — Transport
TCP, UDP, ports, handshake/teardown.
OPEN →
02
Switching Mechanisms
6 sheets
5. PC to Internet
The baseline end-to-end mechanism.
OPEN →
6. Same VLAN, Same Switch
Pure Layer 2 — ARP and the first ping.
OPEN →
7. Different VLANs, Same Switch
Inter-VLAN routing, router-on-a-stick / SVI.
OPEN →
8. Unknown Unicast Flooding
MAC table learning and aging.
OPEN →
9. STP Port States on Plug-In
Blocking → Listening → Learning → Forwarding.
OPEN →
10. A Loop Forms — STP Stops It
Root election and blocked redundant paths.
OPEN →
03
Routing & WAN
3 sheets
11. BGP-4
Cisco IOS-XE & Arista EOS config and troubleshooting.
OPEN →
12. Branch to Public Website
SD-WAN path selection and centralized breakout.
OPEN →
13. Metro Fiber Circuit Down
Gray failures, BFD, automatic reroute.
OPEN →
04
Wireless
2 sheets
14. WPA2-Enterprise Wi-Fi
802.1X, EAP/RADIUS, the 4-way handshake.
OPEN →
15. Wi-Fi Roaming Mid-Call
802.11r/k/v and Fast BSS Transition.
OPEN →
05
Interview Prep
3 sheets
16. Network & Firewall Ownership — Interview Prep
Tie the mechanisms above to the actual role you're interviewing for.
OPEN →
17. Network Engineer — Role Interview Prep
Troubleshooting scenarios, design/ops Q&A, STAR behavioral prep, red flags.
OPEN →
18. Mock Interview Drill
Random-draw practice run against the question bank above — Rapid Fire or Full Interview mode.
OPEN →