reverse lookup
reverse lookup
A DNS (Domain Name Service) server can find an IP address for a computer when the fully qualified domain name is known.
I think the forward look-up zone is use to convert host name to ip address of a pc in our network
DNS
This is possible because of what is called Domain Name Resolution (DNS). Your computer sends a lookup request for 'yahoo.com' to a DNS server, which resolves the domain name into it's IP address.
PQDN is Partially Qualified Domain Name FQDN is Fully Qualified Domain Name.
Fully Qualified Domain Name
A fully qualified domain name (FQDN), sometimes also referred as an absolute domain name, is a domain name that specifies its exact location in the tree hierarchy of the Domain Name System (DNS). It specifies all domain levels, including the top-level domain and the root domain. A fully qualified domain name is distinguished by its unambiguity; it can only be interpreted one way.
Fully Qualified Domain Name
The domain name is the human-readable name that is used to reach a particular address, or set of addresses, on the Internet. There are several different levels of domain; the top-level domain is typically the last bit of the name after the dot and before any slashes, for instance .com or .edu. A sample second level domain would be answers.com. There are several third-level domains associated with this, for instance, wiki.answers.com, which resolves to the page you are looking at, and mail.answers.com which is where email for this second-level domain goes. "Resolving", by the way, is the name given to the process of turning a domain name like wiki.answers.com into an IP address like 192.41.64.63.
A fully qualified domain name (FQDN) is the complete domain name for a specific computer, or host, on the Internet. The FQDN consists of two parts: the hostname and the domain name. Additional info: you may see an FQDN as the following parts: hostname - actual name of the device subdomain - a part of the overall domain domain - usually a company name TLD - what area of the naming convention it appears in so you could have: sales.Midwest.us.Microsoft.com as a complete FQDN, with the name 'sales' as the actual device within the Midwest/us subdomains within the Microsoft domain within the com TLD area.
DNS Server (Domain Name System) resolves Hostnames to IP Addresses in Internet.HOSTS file in Windows computers is responsible for resolution of hostnames to ip addresses.