Network Fundamentals
4 labs in this topic area, in recommended learning order.
-
Cisco IOS Navigation and Initial Device Configuration
Master Cisco IOS CLI command mode navigation, context-sensitive help, line configuration, administrative password protection, banners, and NVRAM configuration saving.
- Cisco IOS
- IOS Navigation
- Device Hardening
- CLI Shortcuts
- Network Fundamentals
- Level
- Beginner
- Time
- 30 min
- Simulator
- Tested in Packet Tracer
-
MAC Address Learning and ARP Operation
Examine how Layer 2 switches build their MAC address table dynamically from incoming frame source MACs, and how Layer 3 hosts map IPv4 addresses to MAC addresses using ARP.
- MAC Address
- ARP
- Switching
- Frame Forwarding
- Network Fundamentals
- Level
- Beginner
- Time
- 30 min
- Simulator
- Tested in Packet Tracer
-
Default Gateway Operation and Troubleshooting
Master the role of the default gateway in local versus remote packet forwarding, and systematically diagnose missing, incorrect, and unreachable gateway configurations.
- Default Gateway
- ARP
- IPv4 Addressing
- Troubleshooting
- Packet Flow
- Level
- Beginner
- Time
- 30 min
- Simulator
- Tested in Packet Tracer
-
CDP Neighbor Discovery and Topology Audit
Discover network topology, verify physical interconnects, and audit device capabilities using Cisco Discovery Protocol (CDP) commands, followed by security hardening on edge interfaces.
- Network Fundamentals
- CDP
- Discovery Protocols
- Layer 2
- Cisco IOS
- Level
- Beginner
- Time
- 45 min
- Simulator
- Tested in Packet Tracer