APNIC Training

eDNS01: DNS Concepts

DeliveryeLearning (this course is conducted online)
Duration1 hour
Level of StudyIntermediate


The Domain Name System (DNS) is a critical part of Internet infrastructure and the largest distributed Internet directory service. DNS translates names to IP addresses, which is required for web navigation, email delivery, and other Internet functions. This course discusses the key concepts of DNS, its features, and related terminologies.

Target Audience:

This course is designed for network engineers, systems administrators, and anyone who is involved in DNS operations.


Basic knowledge of Networking, Unix/Linux

Course Outline:

  • DNS Features
  • DNS Names - FQDNs
  • Domains
  • Delegations
  • Zones
  • Name Servers
  • Resolving process & Caching
  • Resource Records
  • Performance of DNS

Other requirements:

  • Updated web browser with Adobe Flash Player 11 or above
  • Broadband connection running at a minimum of 256kbps or better
  • Headset (to reduce noise)

Maximum number of attendees:

50 participants per session


  • Free

All eLearning courses are free of charge for participants, with priority given to APNIC Members.

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Download slides for this course (1.1 MB).