To use VLSM, the routing protocols in use possess the capability to transmit subnet mask information.
The most likely problem if you can ping a computer by IP address but not by name is a failure of DNS.
The /all switch must be added to the ipconfig command on a PC to verify DNS configuration.
Route aggregation results in smaller routing tables.
tracert is the Windows version of the Cisco command that displays the networks traversed on a path to a network destination.
The arp -a command displays IP-to-MAC-address mappings on a Windows PC.
The command that displays the ARP table on a Cisco router is show ip arp.
When a ping to the loopback address fails , you can assume the IP stack has failed to initialize.
When a ping to the local host IP address fails, you can assume the NIC is not functional.
The typical banner is a message of the day (MOTD) and is set by using the global configuration mode command banner motd.
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