I have a question for accomplished Network Engineers: How do you effectively retain the information you learn over the long term? Do you regularly practice lab exercises or revisit materials? Or does the knowledge tend to stick in your memory once ac...

I understand VLAN creates a broadcast domain and L2 switch only fwd within the VLAN without an L3 device. However, how does the L2 switch knows which VLAN the frame needs to go without a dot1q Header? For eg. I did a pcap and I don't see any VLAN ID ...

 1. How can I tell if this router supports Fiber or copper 10G SFP? Since it says SFP Ethernet - Does this mean it only supports ethernet cables(copper) not Fiber optics? Or supports both?2. It says SFP not SFP+. From what I read only SFP+ support 10...

I have a simple EIGRP topology with 3 routers and 2 AS. I have created a summary route for 192.168.X.X network with /21 and advertised on R2 both serial interfaces(s2/0,s2/1). I have also redistributed both EIGRP AS into each other. However, when R3 ...

I just started learning about route-maps & prefix-list. It was confusing but I did a small lab in gns3 which has helped me to gain more clarity. I have created a simple mind-map to reference until I cement down the logic.I wanted to ask if you could ...