What is DNS? And How it Works - Domain Name System | NEtechy

[How To]_$show=/search/label/How%20to$type=grid$meta=0$readmore=0$snippet=0$count=4$page=true

[What is]_$show=/search/label/What%20is$type=grid$meta=0$readmore=0$snippet=0$count=4$page=true

[Hindi]_$show=/search/label/Hindi$type=grid$meta=0$readmore=0$snippet=0$count=4$page=true

[News]$show=home$type=grid$meta=0$readmore=0$snippet=0$count=4$page=true

What is DNS? And How it Works - Domain Name System

What is DNS? And How it Works - Domain Name SystemWhat is DNS? And How it Works - Domain Name System What is DNS? And How it Works - Domain Name System

What is DNS?  And How it Works - Domain Name System

What is DNS And How it Works

What is DNS?

The Domain Name System (DNS) is a hierarchical decentralized naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. 

Most prominently, it translates more readily memorized domain names to the numerical IP addresses needed for the purpose of locating and identifying computer services and devices with the underlying network protocols. By providing a worldwide, distributed directory service, the Domain Name System is an essential component of the functionality of the Internet.

The Domain Name System delegates the responsibility of assigning domain names and mapping those names to Internet resources by designating authoritative name servers for each domain. Network administrators may delegate authority over sub-domains of their allocated namespace to other name servers. This mechanism provides a distributed and fault-tolerant service and was designed to avoid a single large central database.

The Domain Name System also specifies the technical functionality of the database service which is at its core. It defines the DNS protocol, a detailed specification of the data structures and data communication exchanges used in the DNS, as part of the Internet Protocol Suite. 

Historically, other directory services preceding DNS were not scalable to large or global directories as they were originally based on text files, prominently the HOSTS.TXT resolver. The Domain Name System has been in use since the 1980s.

The Internet maintains two principal namespaces, the domain name hierarchy and the Internet Protocol (IP) address spaces. The Domain Name System maintains the domain name hierarchy and provides translation services between it and the address spaces. Internet name servers and a communication protocol implement the Domain Name System. A DNS name server is a server that stores the DNS records for a domain; a DNS name server responds with answers to queries against its database.

The most common types of records stored in the DNS database are for Start of Authority (SOA), IP addresses (A and AAAA), SMTP mail exchangers (MX), name servers (NS), pointers for reverse DNS lookups (PTR), and domain name aliases (CNAME). Although not intended to be a general purpose database, DNS can store records for other types of data for either automatic lookups, such as DNSSEC records or for human queries such as responsible person (RP) records. 

As a general purpose database, the DNS has also been used in combating unsolicited email (spam) by storing a real-time blackhole list. The DNS database is traditionally stored in a structured zone file.

How it Works- The Domain Name System (DNS)

An often-used analogy to explain the Domain Name System is that it serves as the phone book for the Internet by translating human-friendly computer hostnames into IP addresses. For example, the domain name www.example.com translates to the addresses 93.184.216.119 (IPv4) and 2606:2800:220:6d:26bf:1447:1097:aa7 (IPv6)

What is DNS And How it Works

Unlike a phone book, DNS can be quickly updated, allowing a service's location on the network to change without affecting the end users, who continue to use the same hostname. Users take advantage of this when they use meaningful Uniform Resource Locators (URLs), and e-mail addresses without having to know how the computer actually locates the services.

Additionally, DNS reflects administrative partitioning. For zones operated by a registry, also known as public suffix zones, administrative information is often complemented by the registry's RDAP and WHOIS services. That data can be used to gain insight on, and track responsibility for, a given host on the Internet.

An important and ubiquitous function of DNS is its central role in distributed Internet services such as cloud services and content delivery networks. When a user accesses a distributed Internet service using a URL, the domain name of the URL is translated to the IP address of a server that is proximal to the user. 

The key functionality of DNS exploited here is that different users can simultaneously receive different translations for the same domain name, a key point of divergence from a traditional "phone book" view of DNS. This process of using DNS to assign proximal servers to users is key to providing faster response times on the Internet and is widely used by most major Internet services today.

Read Also


We Hope You Love The Articles- "What is DNS?  And How it Works - Domain Name System" Do Share On Facebook And Whatsapp. Subscribe Us For More Awesome Content.

No comments:

You May Like

Name

Accessories,1,Advantages and Disadvantages,24,Affiliate Marketing,5,Amazon,2,Android,8,Antivirus,4,Application,2,Battery,3,BIOS,1,Bitcoin,1,Blogger,3,Blogs,16,Bluetooth,3,Business,18,Cable,1,Camera,1,Card,1,Categories,1,CD,1,CDMA,1,Cell Phone,2,Cloud Computing,1,Company,1,Computer,32,Computer Architecture,1,Computer Repairing,1,Computing,1,CPU,5,Data,1,Difference between,3,DNS,1,Domain,4,Download,9,E commerce,1,E-Commerce,5,eBay,1,EBooks,2,Email,2,Encryption,1,Error,1,Facebook,3,Facts,3,Features,2,Firewall,1,Floppy Disk,2,Free,3,Freelancer,2,Full Form,1,Games,14,Google,3,Graphics,1,Guide,1,Hard disk,1,Hardware,9,Headphone,1,Hindi,63,History,13,How,14,How to,40,HTML,2,Information,3,Instagram,1,Internet,18,Internet Marketing,1,Introduction,2,IVR System,1,Keyboard,1,Laptop,9,Mac Os,2,Machine,1,Marketing,6,Microsoft,5,Mobile,1,Money Transfer,1,Monitor,2,Motherboard,2,Mouse,2,Network,9,News,22,Online,2,Online Chat,1,Online Money,12,Online Surveys,1,Operating System,8,Password,1,PC Games,7,Pendrive,1,Plotter,1,Plugins,1,Pocket PC,1,Processor,3,Product,2,Programming Language,1,Refurbished,1,Refurnished,1,Satellite,2,Screen,1,SD Card,1,Search Engine,2,SEO,4,Server,3,SMS,1,Social Media,3,Software,18,SSD,1,Success,5,Tablet PC,2,Technology,7,Telephone,1,Television,4,TikTok,1,Tips,8,Tools,1,Top List,1,Touch Screen,2,Tricks,2,Types,2,USB,5,Video Card,2,Virus,5,VPN,1,Web Browser,3,Web Server,1,Website,14,Website Traffic,1,What is,139,Why,5,WiFi,4,Wikipedia,1,Windows,7,WordPress,3,XML Programming Language,1,YouTube,2,
ltr
item
NEtechy: What is DNS? And How it Works - Domain Name System
What is DNS? And How it Works - Domain Name System
What is DNS? And How it Works - Domain Name SystemWhat is DNS? And How it Works - Domain Name System What is DNS? And How it Works - Domain Name System
https://1.bp.blogspot.com/-oYOvG4R2mvY/XRJYhGZorOI/AAAAAAAAGaw/9fjrRC-7snMdtkI0VfiY5oDX4hEsgYtjQCLcBGAs/s1600/What-is-DNS%2B-And-How-it-Works-Domain-Name-System.png
https://1.bp.blogspot.com/-oYOvG4R2mvY/XRJYhGZorOI/AAAAAAAAGaw/9fjrRC-7snMdtkI0VfiY5oDX4hEsgYtjQCLcBGAs/s72-c/What-is-DNS%2B-And-How-it-Works-Domain-Name-System.png
NEtechy
https://www.netechy.com/2019/06/What-is-DNS-And-How-it-Works.html
https://www.netechy.com/
https://www.netechy.com/
https://www.netechy.com/2019/06/What-is-DNS-And-How-it-Works.html
true
751342609679224409
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy