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Domain name server
The document discusses domain name servers (DNS), explaining that DNS translates domain names to IP addresses, allowing computers to connect to websites by name instead of numeric address. It describes how DNS works by checking its own database and cache for domain name to IP address mappings, then querying other DNS servers if needed to find the correct mapping to return. The document also mentions configuring a DNS server.
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Domain name server
- 1. DOMAIN NAME SERVER Isuru Deminda Thilakarathne ICT/12/125
- 2. What is DNS? • Domain Name Server An internet service that translate domain names in to IP Addresses. Domain Name IP Address Kdu.ac.lk 222.165.190.172
- 3. How DNS ServerWorks ? DNS Server DNS Server I need Direction to kdu.ac.lk The domain name is not in my database or cache. I’ll try another DNS Server That’s in my cash! Its maps to this IP Address “222.165.190.172” Great! I’ll cache that for a while in case I get more requests. Thanks for the Direction ! Now to find lots of great Infromation. kdu.ac.lk
- 4. Configure a DNSServer
- 5.
Editor's Notes
- #2 Welcome to our presentation. Today I’d like to talk about What is DNS and its configurations.
- #3 Short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. For example, the domain name kdu.ac.lk might translate to 222.165.190.172 The DNS system is, in fact, its own network. If one DNS server doesn't know how to translate a particular domain name, it asks another one, and so on, until the correct IP address is returned.
- #4 If you've ever used the Internet, it's a good bet that you've used the Domain Name System, or DNS, even without realizing it. DNS is a protocol within the set of standards for how computers exchange data on the Internet and on many private networks, known as the TCP/IP protocol suite. Its basic job is to turn a user-friendly domain name like "kdu.ac.lk" into an Internet Protocol (IP) address like 222.165.190.172 that computers use to identify each other on the network. It's like your computer's GPS for the Internet.