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.

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