InternshipKey terms and common mistakes
The words you will hear in Network Engineering work and the mistakes that most often cost interns approvals.
Key terms
| Term | Meaning |
|---|---|
| LAN | Local Area Network |
| OSI model | 7-layer reference model |
| MAC address | Hardware address of a network card |
| IP address | Logical network address |
| TCP | Reliable connection-oriented protocol |
| DNS | Domain Name System |
| Hub | Repeats data to all ports |
| Firewall | Traffic filter |
Common mistakes to avoid
- Changing a live device config without a backup or rollback plan.
- Not documenting IP plans and VLANs.
- Leaving default credentials on switches and routers.
- Testing only that ping works, not the real application traffic.
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