LPI Linux Certification/Troubleshooting Network Issues

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Detailed Objective[edit]

Weight: 1

Candidates should be able to identify and correct common network setup issues, to include knowledge of locations for basic configuration files and commands.

  • Key knowledge area(s):
    • Location and content of access restriction files as /etc/hosts
    • Utilities to configure and manipulate ethernet network interfaces
    • Utilities to manage routing tables
    • Utilities to list network states.
    • Utilities to gain information about the network configuration
    • Methods of information about the recognised and used hardware devices
    • System initialisation files and their contents (SysV init process)
  • The following is a partial list of the used files, terms and utilities:
    • /sbin/ifconfig
    • /sbin/route
    • /bin/netstat
    • /etc/network || /etc/sysconfig/network-scripts/
    • System log files such as /var/log/syslog &&/var/log/messages
    • /bin/ping
    • /etc/resolv.conf
    • /etc/hosts
    • /etc/hosts.allow && /etc/hosts.deny
    • /etc/hostname || /etc/HOSTNAME
    • /sbin/hostname
    • /usr/sbin/traceroute
    • /usr/bin/nslookup
    • /usr/bin/dig
    • /bin/dmesg
    • /usr/bin/host