What Is The Hierarchy Of DNS?

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What is at the top of the hierarchy tree of domains?

The DNS root zone is the highest level in the DNS hierarchy tree. The root name server is the name server for the root zone. These are the authoritative nameservers which serve the DNS root zone. These servers contain the global list of the top-level domains.

What computers are the highest authorities in the DNS hierarchy?

The root servers are the ultimate authorities in the domain name system hierarchy.

What are the three domains of the DNS?

DNS is a TCP/IP protocol used on different platforms. The domain name space is divided into three different sections: generic domains, country domains, and inverse domain.

What is DNS level?

DNS Zone Levels

The Domain Name System (DNS) defines a domain namespace, which specifies Top Level Domains (such as “.com”), second-level domains, (such as “acme.com”) and lower-level domains, also called subdomains (such as “support.acme.com”). Each of these levels can be a DNS zone.

Is DNS a protocol?

(Although many people think “DNS” stands for “Domain Name Server,” it really stands for “Domain Name System.”) DNS is a protocol within the set of standards for how computers exchange data on the internet and on many private networks, known as the TCP/IP protocol suite.

Why is DNS organized as a hierarchy?

The prominent intention of DNS is to translate domain names to the IP addresses. Even though there are there are domain names for all the websites, there are IP addresses also for them. The Internet uses this IP addresses to identify the websites. The hierarchy consists of DNS servers.

How many bits does an IPv6 address contain?

128 bits

Which type of DNS record identifies a mail server?

201.12, type field MX stands for mail exchange record. It identifies a mail server. mail1 represents the host name , IN stands for Internet record class and MX is the record type used to identify the mail server with IP address178.

Where are the root DNS servers located?

Root name servers are the servers at the root of the Domain Name System (DNS) hierarchy. The DNS is the system which converts Internet domain names, such as www.netnod.se, into numeric addresses such as 212.237. 144.84 or 2a07:2180:0:1::400.

What is the purpose of DNS?

Domain Name Servers (DNS) are the Internet’s equivalent of a phone book. They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses. This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses.

How does a DNS work?

The Domain Name System (DNS) is the phonebook of the Internet. Web browsers interact through Internet Protocol (IP) addresses. DNS translates domain names to IP addresses so browsers can load Internet resources. Each device connected to the Internet has a unique IP address which other machines use to find the device.

What is the importance of using DNS?

DNS stands for Domain Name System. This system is arguably one of the most important aspects of the Internet. DNS ensures the Internet is not only user-friendly but also works smoothly, loading the content users ask for quickly and efficiently.

What layer is DNS?

In OSI stack terms, DNS runs in parallel to HTTP in the Application Layer (layer 7). DNS is in effect an application that is invoked to help out the HTTP application, and therefore does not sit “below” HTTP in the OSI stack. DNS itself also makes use of UDP and more rarely TCP, both of which in turn use IP.

What do you mean by DNS?

Domain Name System

What are two uses of DNS?

It is mainly used to convert human meaningful names (domain name) to computer meaningful name (IP address) in Internet. This is because computers can only recognize IP addresses. It allows you to use internet more easily by allowing you to specify a meaningful name on your web browser instead of using IP address.