5.5 TestOut NetPro DNS Name Resolution

What is the difference between an A record and a PTR record?

An A record is an IPv4 DNS hostname to an IP address. A PTR record only maps out IP addresses to a hostname (points to an A record).

What is the difference between a zone and a domain in DNS?

A domain is one portion of a website that leads to a certain section of it. A zone is a collection of domains within the main domain of a website.

What is the difference between a forward lookup and a reverse lookup?

Forward lookup goes from domain name to IP address while reverse lookup goes from IP address to domain name.

How are host names organized in DNS?

Host names are organized by setting up an IP address with a domain name.

What is the role of the root servers in DNS?

Root servers supply the IP addresses of every available website when someone requests a website name.