Let's begin then!
- Calculating Subnets.
 - Analyze TCP Header During Transmission.
 - Installing Packet Tracer.
 - Cisco Router and Switch Initial Configuration with Packet Tracer.
 - CDP: Building Topology Diagram.
 - Lab 1-1: Switch Startup and Initial Configuration.
 - Lab 1-2: Troubleshooting Switch Media Issues.
 - Lab 2-1: Router startup and Initial Configuration.
 - Lab 2-2: Internet connections - Static NAT.
 - Lab 2-2: Dynamic NAT.
 - Lab 2-2: Port Address Translation (PAT).
 - Lab 3-1: Improving Device Security.
 - Lab 3-2: Device Hardening.
 - Lab 3-3: Using ACLs to filter IP based traffic.