A , or Uniform Resource Locator, is a string of characters that identifies the location of a resource on the internet. It consists of various components, including the , or Name System, which plays a crucial role in the process. When a user enters a domain name into a web browser, the DNS is responsible for translating that domain into an . This process, known as Address Resolution, allows the browser to locate the desired website.
The DNS operates within a hierarchical structure called the Domain. A domain is divided into multiple levels, with each level separated by a dot (.). The highest level, known as the , is a generic or country-specific identifier such as .com or .org. Beneath the TLD, a domain can have s, representing distinct sections of a website. For example, in the URL support.google.com, "support" is a subdomain of "google", which is the .
A URL may also include a name]] component, which refers to the specific server hosting the resource. The , a crucial part of the DNS, is responsible for querying the DNS to obtain the IP address of the hostname specified in the URL. It acts on behalf of the user's browser and sends requests to various DNS servers to resolve the IP address.
is a process that ensures URLs can safely transmit all characters by converting them into a valid format. This encoding prevents any conflicts or misinterpretations that may arise due to special characters or spaces within the URL.
To facilitate Address Resolution, the DNS relies on s, which are authoritative servers that maintain information about TLDs. When the Resolver cannot immediately resolve a domain, it queries a Root DNS Server for the necessary information to guide the resolution process.
The management of domains and their registration is handled by s. These entities allow individuals or organizations to register unique domain names within various TLDs. They handle the allocation and administration of these domain names, ensuring that each one is unique and not already in use.
Keywords
url | dns | resolver | top-level domain (tld) | domain registrar | domain | ip address | url encoding | root dns server | [[host | parent domain | subdomain | address resolution |
