:: Course Catalog :: Introduction to DNS

Introduction to DNS (B125) is currently looking for an instructor to teach this class. If you, or someone you know, is interested in teaching with please visit for more information.
DNS is an integral part of working with the Internet, but what if you don't understand how it works? This course will give you all the insight you need to have a basic understanding of DNS and how it translates into! The class is designed for web professionals and almost anyone looking for a walkthrough on general DNS concepts. We will begin with an introduction to the Domain naming system then move on to how the client computers translate DNS information. Lastly, we will look at the major components of a DNS server and clear up how to work with DNS zones and subdomains.

Applicable Job Roles: webmasters, web programmers, and web application developers.

Week 1: An Introduction to DNS
  • Brief explanation of the translation of an IP address to a domain name
  • What is DNS? (the DNS hierarchy and root, domain names, subdomains, FQDN, and Nameservers)
  • Brief history of BIND DNS
  • Summary of other naming services HOSTS.TXT, WINS, NIS
Week 2: DNS Clients
  • The local domain
  • Windows clients
  • Mac OS X/UNIX/Linux
  • Defining nameservers or configuring by way of DHCP
  • Using basic tools: ping, nslookup, dig, host, and WHOIS
Week 3: DNS Servers
  • Zones and records
  • Resource Records
  • Master Servers and Slave Servers
  • Caching
  • Forwarding
Week 4: Working with DNS
  • Using subdomains
  • DNS Security
  • Dynamic DNS - On the LAN and the Internet
  • Configuring DNS settings available through major web hosting vendors
This class does not require any advanced knowledge of networking, only the overall familiarity with the internet that most of us have.
Students will only need access to a computer with a recent version of Firefox, Safari, or Internet Explorer.

Required Book: DNS For Dummies
Suggested Book: DNS and BIND

Additional information:

Your place in the course is confirmed by your payment. Introductory courses are intended for students with no experience in the subject matter and are seeking beginner level training.

Refund Policy: Please read our Terms and Refund Policy before registering for this course.

Additional Cost: Book and software might be required for the course. Read the Requirements and Book section for more information. Course fee does not include the book and software cost .

How eClasses Work:Instructors post lectures (text-based, no video or audio), reading selections, and hands-on assignments once a week in the online classroom. Students can discuss the assignments with the instructor and amongst themselves in the classroom area. This format has no set meeting time, which allows students to attend class at a time most convenient to them, yet still provides logically organized communication between class participants. Students can apply for the completion certificate after finishing the class.

Introduction to DNS
Price: $180.00
Item No.: B125
Instructor: Instructor Needed
Open Courses: No other sessions are scheduled for this course. You can add to your wish list and you will be notified when other sessions are scheduled.

Instructor's ProfileInstructor
We are looking for an instructor to teach this class. Please visit for more information.
Before you register for this class, please read the Outline, Prerequisites, Requirements, Books, and Refund Policy sections carefully.
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  • "Great class. Very challenging--be prepared to learn a lot of new concepts in this class. The instructor was helpful and knowledgable." - Philip Napora

  • "A harder course than I expected, but I did learn from it. I did get a lot of good future reference materials to use as resources as well, so that was good too." - Robert Hoefer

  • "Excellent class that included a great deal of information, yet in manageable chunks. I learned much more from this class than I do from a typical one, and it was very satisfying. The instructor's weekly lectures really pulled everything together so it was easier to understand." - Kathy Hoffman