Detailed Objective (205.3)

(LPIC-2 Version 4.5)

Weight: 4

Description: 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 Areas:

• Location and content of access restriction files
• 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 recognized and used hardware devices
• System initialization files and their contents (SysV init process)
• Awareness of NetworkManager and its impact on network configuration

Terms and Utilities:

• ip
• ifconfig
• route
• ss
• netstat
• /etc/network, /etc/sysconfig/network-scripts/
• /bin/ping, ping6
• traceroute, traceroute6
• mtr
• hostname
• System log files such as /var/log/syslog, /var/log/messages and the systemd journal
• dmesg
• /etc/resolv.conf
• /etc/hosts
• /etc/hostname, /etc/HOSTNAME
• /etc/hosts.allow, /etc/hosts.deny