Objective 109.3: Basic Network Troubleshooting
Interfaces are configured through a number of configuration files.
/etc/hostname contains the assigned hostname for the system.
/etc/networks sets up equivalence between addresses and names for entire networks.
The host command returns DNS information.
The hostname, domainname, and dnsdomainname commands set or display the current host, domain, or node name.
The netstat command displays network connections, routing tables, interface statistics, masquerade connections, and multicast memberships.