Hosts connected to the Internet communicate with each other using their Internet Protocol (IP) addresses. The Domain Name System (DNS) is what is responsible for the conversion of human readable host names (like www.training.lk) to the associated IP addresses. DNS also maintains the email routing details. It has some email spam prevention features as well.
This training program is a practical introduction to the Domain Name System.
This training is delivered over the Internet. You can join in from a remote location like your home or office. You will need an Internet connection. You need to have speakers/headphones. If there would be a need to speak, a microphone is also needed.
- Website owners, creators and maintainers
- System and network administrators
- Others interested in learning how the Internet operates
- General familiarity with the Internet.
Kamal Wickramanayake (Profile)
- This training is delivered in a virtual class room (over the Internet).
- Host names and IP addresses
- The concept of a domain
- Domain name registration process
- Domain transfer
- Hierarchical organization of name server
- Primary and secondary DNS servers
- Querying a name server
- Name resolution mechanism
- Reverse resolution mechanism
- DNS record caching, refreshing intervals, update propagation delays
- DNS record types
- Mail routing mechanism
- How SPF and DomainKeys work (full details are out of scope)
- DNS zone transfer
- Sub domains
- Sub domain resolution with delegated servers
- Glue records
- Configuration of a DNS server (Software: Bind9 for Linux)