Opus One



Domain Name Service (DNS) Configuration

With the rapidly increasing size of the global TCP/IP Internet, TCP/IP system and network managers must understand the intricacies of the Internet Domain Name System (DNS). DNS is a distributed hierarchical database providing such information as: hostname to IP address mapping, IP address to hostname mapping, mail exchangers, and information about locating nameservers in the Internet.

This class provides a technical and administrative overview of DNS, as well as practical information on how to configure a DNS nameserver and DNS problems.

You will learn:

  • Basics of DNS
  • How to use NSLOOKUP
  • How to configure your system as a DNS nameserver
  • How to diagnose, troubleshoot, and resolve DNS problems

Topics to be covered include:

  • Overview of the DNS architecture
  • Definition of the types of DNS nameservers
    • Caching-only nameserver
    • Primary nameserver
    • Secondary nameserver
  • DNS Configuration files
    • File formats
    • Record descriptions
  • Troubleshooting techniques for DNS problems

Class length

  • 1 day


  • System Managers
  • Network Managers


  • Basic TCP/IP networking concepts

Additional Information

  • An excerpt of an older version of the presentation for this class is available from Opus One's library in the Presentations pages.

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