LPI Linux Certification/Fundamentals of internet protocols

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Detailed Objectives[edit]

(LPIC-1 Version 5.0)


Weight: 4


Description: Candidates should demonstrate a proper understanding of TCP/IP network fundamentals.


Key Knowledge Areas:

  • Demonstrate an understanding of network masks and CIDR notation.
  • Knowledge of the differences between private and public "dotted quad" IP addresses.
  • Knowledge about common TCP and UDP ports and services (20, 21, 22, 23, 25, 53, 80, 110, 123, 139, 143, 161, 162, 389, 443, 465, 514, 636, 993, 995).
  • Knowledge about the differences and major features of UDP, TCP and ICMP.
  • Knowledge of the major differences between IPv4 and IPv6.
  • Knowledge of the basic features of IPv6.


The following is a partial list of the used files, terms and utilities:

  • /etc/services
  • IPv4, IPv6
  • Subnetting
  • TCP, UDP, ICMP