https://www.inhindi.org/ring-network-topology-in-hindi-%e0%a4%b0%e0%a4%bf%e0%a4%97-%e0%a4%a8%e0%a5%87%e0%a4%9f%e0%a4%b5%e0%a4%b0%e0%a5%8d%e0%a4%95-%e0%a4%b8%e0%a5%8d%e0%a4%9f%e0%a5%8d%e0%a4%b0%e0%a4%95%e0%a5%8d%e0%a4%9a/