
November 8, 2019
What is DNS and How Does it Work

DNS or Domain Name System is like an all-embracing directory of the internet, which contains all the domain names of the websites hosted on the World Wide Web. When a user tries to accesses any type of information online, the DNS translates the domain name to the IP address of the device so that the internet browser can load the content of the website on it. Every device connected to the internet has a unique IP address, which is used by other machines to locate the device and deliver the requested information. DNS helps to eliminate the need to memorize the numerical IPv4 address or the alphanumeric IPv6 address, so that the user can use the internet easily.
How Does DNS Work
The DNS server converts the hostname, such as “www.example.com”, into a simple, computer-friendly IPv4 address, such as 192.168.1.1, or an IPv6 address, such as 2041:0dc8:75a3:0340:04b3:8a2e:0370:7a34. This makes it easier for web servers to find the user’s device easily. When the user searches for “example.com” on the web browser, the DNS translates the search query to a machine-friendly address to locate the website. All this is done in a fraction of a second, and requires no additional interaction from the user to access the website content.

There are four components of a DNS server, which work together to load a web page on the user’s device. The first one is the DNS recursor, which receives the search query from the user via the web browser. The DNS recursor would then decode the request and pass it on to the root nameserver, which is the second part of a DNS server, to translate the hostname into an IP address. The root nameserver then directs the search query to more specific locations in order to find the intended result.
The third constituent of a DNS server is the top-level domain nameserver or TLD server, which searches for the specific IP address on the internet. Typically, the TLD nameserver resembles the last part of the hostname, such as “com” in “example.com”. The fourth element of a DNS server is authoritative nameserver. This acts like a dictionary for the internet, wherein the hostname is detailed with a brief definition, so that the server can find the specific IP address. If the authoritative nameserver has access to the information requested, it would return the IP address for the specific hostname to the DNS recursor to deliver the result of the initial search query.
Recent Posts
Archives
- January 2021
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- October 2019
- September 2019
- August 2019
- July 2019
- June 2019
- May 2019
- March 2019
- February 2019
- January 2019
- October 2018
- September 2018
- July 2018
- June 2018
- January 2018
- December 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- November 2016
- August 2016
- July 2016
- May 2016
- April 2016
- March 2016
- August 2015
Categories
Completely synergize resource is taxing relationships via premier are man niche markets. Professionally cultivate one to one customer.
Categories
Recent News
Types of AWS IP Address – Infographic
January 15, 2021
Everything You Need to Know About IP Spoofing
January 11, 2021
Understanding the Differences between TCP/IP and OSI Models
December 25, 2020
Tags
Archives
- January 2021
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- October 2019
- September 2019
- August 2019
- July 2019
- June 2019
- May 2019
- March 2019
- February 2019
- January 2019
- October 2018
- September 2018
- July 2018
- June 2018
- January 2018
- December 2017
- October 2017
- September 2017
- August 2017
- July 2017
- June 2017
- May 2017
- April 2017
- March 2017
- February 2017
- January 2017
- November 2016
- August 2016
- July 2016
- May 2016
- April 2016
- March 2016
- August 2015
North America :
Phone: +1-310-299-0944
Headquarters: 18C-3107 av. des Hotels
Quebec,G1W 4W5
Canada
South America :
Phone: +1-310-299-0944
Branch: 24.5 Old Northern Highway
Boston Village, Belize District
Belize
Asia :
Phone: +63 324 341 074
Branch: Pelaez St. Bogo City
Cebu 6010
Philippines
Recent Comments