View Quiz(8).docx from CIS 110 at Home School Academy. com, .net, and .edu are all examples of what level of the DNS naming hierarchy? Top-level …
Aug 28, 2016 · Question 6.com, .net, and .edu are all examples of what level of the DNS naming hierarchy? Answers: 0 out of 10 points Selected Answer: [None Given] a. Subdomains b. Toplevel domain names c. Stub domains d. Secondlevel domain names
Aug 22, 2016 · Here, both the domains are the sub-domains of the main domain example.com and the example.com is also a subdomain of the com top level domain. This is the DNS hierarchy and elements of the DNS hierarchy. If you need any further …
DNS Hierarchy and the Internet The domain hierarchy that is shown in the following figure is a “leaf” of the huge DNS namespace supported on the global Internet. The figure consists of the root directory, which is represented as a dot (.), and two top level domain hierarchies, one organizational and one geographical.
The DNS is an integral part of the Internet as it would not exist without it. The DNS is in a hierarchy in which the members of it are ranked according to the relative status. We are going to see the DNS hierarchy in detail here.
The next level in the DNS hierarchy is Top level domains. There are many TLDs available at the moment. As we have seen the TLDs are classified as two sub categories. They are organizational hierarchy and geographic hierarchy. Let us see each in detail.
It is called as tld in short. This is the next component in the DNS hierarchy. A TLD can have many domains under it. For example, a .com tld can have linux.com, centos.com, ubuntu.com, etc. Sometimes, there is a second level hierarchy to a tld. They deal with the type of entity intended to register an SLD under it.
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. It answers the requests for records in the root zone and answers other requests by providing a list of authoritative name servers for the appropriate TLD (top-level domain). The root nameservers are very important because they are the first step in resolving a domain name. These are the authoritative nameservers which serve the DNS root zone. These servers contain the global list of the top-level domains. The root zone contains the following:
A FQDN is the domain name that specifies its exact location in the DNS hierarchy. It specifies all domain levels including the top-level domain and the root zone. It consists of two parts, the host name and the domain name.
The IP address is a numerical data incorporated with four parts separated by dots (.). This numerical value is not easy to remember, so domain names were created, which are easily memorable. The DNS is responsible for translating these domain names to the IP addresses. The DNS is a worldwide network that collectively forms a database ...
What is DNS? The DNS stands for Domain Name System. 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.
Conceptually, the fully qualified domain name indicates the path to the root, as does the absolute path name of a UNIX file. However, fully qualified domain names are read from lowest, on the left, to highest, on the right. Therefore, a fully-qualified domain name has the following syntax.
The Internet root domain, top-level domains, organizational and geographical, are maintained by the various Internet governing bodies. People with networks of any size can “jo in” the Internet by registering their domain name in either the organizational or the geographical hierarchy.
The “A” DNS record is primary in the DNS Index. By using an “A” record you can point a domain to an IP. The DNS resolver performing a lookup for the superhosting.bg domain’s IP will find it in this DNS zone. Afterwards, it will send back the IP to the DNS client.
We learned that the web browser cannot perform a DNS lookup in the DNS Index on its own. Instead, the DNS resolver performs the lookup as it can find the important DNS record “domain.name=IP address” in the Index. But to reach it the DNS resolver first has to look up all authoritative name servers, responsible for all levels in the domain name.
For example, the domain superhosting.bg is actually comprised of two levels – superhosting and bg. The superhosting domain is actually a subdomain of the .bg domain. When a domain is fully specified with all its levels, such as blog.superhosting.bg (or blog.superhosting.bg.) it is called fully qualified domain name ( FQDN ).
Relative domain name means every other domain which does not include all levels, e.g. blog or blog.superhosting. Although the fully qualified domain name is specified as one whole name, e.g. „ superhosting.bg “, the DNS data for each level is located on different authoritative name servers on the web.
Anycast is a networking technique where the same IP prefix is advertised from multiple locations. There can be numerous physical servers or clusters from multiple locations around the world behind each IP (DNS root server). A full map of all physical servers around the world is available at root-servers.org.
Register.bg is responsible for the „ .bg “ top-level domain.
From a technical point of view, the domain level is actually a DNS zone (the list of DNS records) when it comes to configuration. From the point of view of a regular user the domain level is called simply a domain (or an extension). You will see an example below.