SDE-1 @ Cisco | 270k+ Impressions | Full Stack Web Developer | Solving Problems via Web Products
𝘄𝘄𝘄[ . 𝗱𝗼𝘁]𝗲𝘅𝗮𝗺𝗽𝗹𝗲[ . 𝗱𝗼𝘁]𝗰𝗼𝗺 - Understanding the significance of "dot [.]" here is interesting. Let me break this for you. This interesting stuff comes from a concept of DNS [ Domain Name System ] which you all might have heard of. The interesting part here is of the 𝗛𝗶𝗲𝗿𝗮𝗿𝗰𝗵𝗶𝗰𝗮𝗹 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 of any domain which is determined the position of dot[.] in them. Here, in 𝘄𝘄𝘄[ . 𝗱𝗼𝘁]𝗲𝘅𝗮𝗺𝗽𝗹𝗲[ . 𝗱𝗼𝘁]𝗰𝗼𝗺 we can see 2 dot's and this represents the hierarchical structure of the domain name. 1. com is a top-level domain (TLD). 2. example is a second-level domain (SLD). 3. www is a subdomain of example.com. The dot helps in clearly defining the different levels within the domain name, making it easier for DNS servers to manage and resolve domain names efficiently. 𝗘𝗮𝗰𝗵 𝗹𝗲𝘃𝗲𝗹 𝗶𝗻 𝘁𝗵𝗲 𝗵𝗶𝗲𝗿𝗮𝗿𝗰𝗵𝘆 𝗿𝗲𝗽𝗿𝗲𝘀𝗲𝗻𝘁𝘀 𝗮 𝗱𝗲𝗹𝗲𝗴𝗮𝘁𝗶𝗼𝗻 𝗼𝗳 𝗮𝘂𝘁𝗵𝗼𝗿𝗶𝘁𝘆. The top-level domains (like .com, .org, .net) are managed by specific organisations, while the second-level domains are delegated to registrants who can create subdomains as needed. This is how the dot in domain extensions plays a crucial role in maintaining the organisation, management, and clarity of domain names in the DNS system.
