1. **Router Management** involves accessing the device via CLI (SSH/Telnet) or GUI to monitor, troubleshoot, and update firmware. 2. **Basic Router Configuration** includes setting up interfaces, IP addresses, routing protocols (like OSPF, EIGRP), and access control lists (ACLs). 3. **Static and Dynamic Routing** are core types—static requires manual setup, while dynamic uses protocols to auto-learn paths. 4. **Networks are classified as LAN, WAN, MAN, PAN**, and **WLAN**, each serving different geographic scopes and use cases. 5. **Enterprise routers** often support **VLANs, VPNs, NAT, DHCP, and QoS** for advanced traffic management and security.