I learned that standard ACLs should go near the destination and extended ACLs near the source. But why? If the ACL blocks traffic either way, what difference does placement make? Can someone explain with a concrete example?
I can configure both static routes and default routes on a router. But when should I use a specific static route pointing to a network vs just a default route that catches everything? Is there a best practice for small networks vs large ones?
I know TTL decrements at each hop but what exactly happens when it hits zero? Does the packet just disappear? Does the router send something back? And how does this relate to traceroute? I've seen TTL mentioned in ping output but never really understood the mechanics.
I have a topology with two routers that can reach the same destination via different paths. OSPF picks one but I don't understand why. Is it based on hop count like RIP? How does the cost metric work and how can I influence which path gets chosen?
I keep seeing both mentioned in my studies and they both do routing. When would you use a router vs a Layer 3 switch? Is one faster? Are there features only a router can do? Would love a clear explanation of when to pick each one in a real network design.
Jump into a hands-on lab challenge
NetForge-AI is an independent educational platform and is not affiliated with, endorsed by, or sponsored by any networking vendor or certification body. All product names, protocols, and standards referenced are the property of their respective owners and are used for descriptive, educational purposes only.