paid Labs Lab ipc-07 - OSPF DR/BDR Election On a broadcast OSPF segment, the protocol elects a Designated Router (DR) and a Backup DR (BDR). Other routers form J May 12, 2026 5 min read
paid Labs Lab ipc-06 - OSPF Network Types OSPF operates differently on different link types. On Ethernet (broadcast), it elects a DR/BDR. On a point-to-point link (PPP, J May 12, 2026 4 min read
paid Labs Lab na-14 - Wireless Architecture Overview (Concept Lab) The CCNA exam requires a working understanding of wireless network architecture without a hands-on Wi-Fi lab requirement. The Catalyst 9800 J May 12, 2026 4 min read
paid Labs Lab na-13 - SVI on L3 Switch (Inter-VLAN Routing) An SVI (Switched Virtual Interface) is a virtual L3 interface inside a switch, associated with a VLAN. When the switch J May 12, 2026 6 min read
paid Labs Lab ipc-02 - Floating Static Routes (AD Manipulation) A floating static route is a second static route to the same destination with a deliberately higher administrative distance. It J May 12, 2026 4 min read
paid Labs Lab ipc-01 - Default Static Route + Floating Backup A default route - the famous ip route 0.0.0.0 0.0.0.0 next-hop - tells a J May 12, 2026 4 min read