How does DNS work step by step?
How does DNS work?
- Step 1: Request information.
- Step 2: Ask the recursive DNS servers.
- Step 3: Ask the root name servers.
- Step 4: Ask the TLD name servers.
- Step 5: Ask the authoritative DNS servers.
- Step 6: Retrieve the record.
- Step 7: Receive the answer.
What is DNS and its purpose?
Domain Name Servers (DNS) are the Internet’s equivalent of a phone book. They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses. This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses.
What is DNS and example?
DNS – Domain Name System
(1) Short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses. For example, the domain name www.example.com might translate to 198.105. 232.4.
What is DNS mean?
Domain Name System
Is DNS a protocol?
(Although many people think “DNS” stands for “Domain Name Server,” it really stands for “Domain Name System.”) 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.
What layer is DNS?
In OSI stack terms, DNS runs in parallel to HTTP in the Application Layer (layer 7). DNS is in effect an application that is invoked to help out the HTTP application, and therefore does not sit “below” HTTP in the OSI stack. DNS itself also makes use of UDP and more rarely TCP, both of which in turn use IP.