Configuring name resolution

The name resolution process is governed by the protocol known as the Domain Name System (DNS). As you know, DNS translates domain names into IP addresses. As a concept, DNS has been available since the ARPANET era. However, as a standard, the first DNS specifications, known as Requests for Comments (RFC) documents, were published at the beginning of the 1980s. In its architecture, DNS is hierarchical and consists of three main components: domain name, domain namespace, and name server. The domain name represents the website and consists of one or more parts called labels that are separated by a period (for example, PacktPub.com). Thedomain namespace is the hierarchical naming scheme of the DNS database organized into zones, where each zone represents a root domain, top-level domains,second level domains, subdomains, and hostnames. The name server is a network server responsible for responding to queries against a directory service by mapping the domain name into...