What is dns? and what is the difference forward lookup zone and reverse lookup zone?

forward look up zone is used to convert the human meaningful name (domain name) which is in easy to understand format to computer meaningful name (IP address), however reverse lookup zone works in reverse way to convert IP address to domain name.

The Domain Name System (aka DNS) is used to resolve human-readable hostnames like www.Dyn.com into machine-readable IP addresses like 204.13.248.115.

Forward lookup zone is to convert from domain name to IP addresses and Reverse lookup zone is to convert from IP addresses to domain name.

he Domain Name System (DNS) is a central part of the Internet, providing a way to match names (a website you're seeking) to numbers (the address for the website). Anything connected to the Internet - laptops, tablets, mobile phones, websites - has an Internet Protocol (IP) address made up of numbers.

Forward Look Up Zone :

It Resolve the IP to Host 

Reverse Lookup zone:

It Resolves  the Host to IP

Domain Name server whic is used to convert and match from alphabetic charecters to appropiate ID adresses mapped in concern servers. forward lookup is used to collect respective domain names followed by IP address and reverse lookup zone used for this same process but starts from IP address to domain name

DNS Domain name system provide a standard method for associating names with numeric internet addresses.This makes it possible for users to refer to network computers by using easy to remember names instead of a long series of numbers. In addition DNS provides a hierarchical namespace ensuring that each host name will be unique across a LAN or WAN.

Forward lookup zone maps an IP to a host name.

Reverse lookup Zone:Maps hostnames to IP

Domain naming server is doing conversion of Ip address to FQDN and FQND to ip address. If we convert IP to FQDN it is called Forward lookup zone. If we convert FQDN to ip address is called reverse lookup zone 

Forward Lookup resolves domain name  to IP address , but reverse lookup resolves IP address  to domain name..

DNS is known as Domain Naming system.

The difference between forward lookup and reverse lookup zone,

forward lookup zone converts name to IPaddress and reverse lookup zone converts IPaddress to name.

DNS (Domain Name System/server) is used to translate domain names to IP address which is understandable by computers.

Forward Lookup Zone: Convert Domain name to IP address. Used for websites

Reverse Lookup Zone: Convert IP address to Domain name. 

forward look up zone is used to convert name  (domain name)to ip .

 reverse lookup zone works in reverse way to convert IP address to domain name

Domain name services forward loop which resolves name to an IP address and reverse lookup resolves IP to name