In reality everyone knows his name and declare it done regardless of whether
this name is a real or a nickname or name of a campaign because of the foolish
mistake he did in the end, a name known by everyone up to Bmnadth that name.
As well as in the online world you need to know by name and everyone can reach
you on the way very easily.
Let's take a look at the Arabs and the WordPress forum in the world of the
Internet known as the Forum on behalf of the domain ar-wp.com When you write
this name in any browser, and trample your foot right on the Enter key (Enter)
will make this forum your browser on your face directly informant beware that
this request has been implementation.
Let's go back to the domain name (Domain) the forum once again when he ar-wp.com
It consists of two parts:
Part I: is the domain name and usually have a name that shows the site's content
or description of him or the name of the site and perhaps also a brief
description, for example ar-wp owner's name, this is a two parts is the arabic
wordpress and can have the domain name of a real person such as the Code
rasheed-Rashid b (Do not ask me what it means to the letter b) or as in my
nickname Abu Abdullah abo3bdullah may be the name of the site is a mixture of
letters and numbers and carry a particular meaning may not only known example of
the domain (Br4v3-H34r7) Until the moment I could not understand what means of
these characters!!!.
Part II: an extension, which follows the name of the site and the idea was
essentially based on the site's activity and its objectives and months I will
tell extensions known as:
1 / com = commercial means business.
2 / net = network means the network.
3 / org = organization means a non-profit, charitable or governmental
organizations.
4 / ws = website means the site.
5 / info = information means the information.
6 / biz = business and means in the area of finance and business and trade.
This list does not contain all the extensions site, but for the more famous and
sometimes find a Extensions are shortcuts to names of countries, such as (ae:
United Arab Emirates See Code Marwan marwan.ae).
Prefer to be the name of the domain name is short for short or long name so they
can be saved and easily remember.
Prefer to use the majority Alimtdadin com, net, respectively, to the large
spread of knowledge and the majority of these extensions may be given the first
part of the name is enough without the need to give the extension to
automatically assumes that its extension com or net.
I hope that this information is useful and beneficial.
Domain Name System (DNS) stands for Domain Name System is a system that
stores information regarding the names of bands in the database are distributed
on the Internet. The domain name server information linking many domain names,
but in particular stores IP address associated with this domain.
In other words, is a system that translates domain names from words to numbers,
known as (IP Address).
Just as the phones are numbers, if you want to call any phone you must know the
number, as well as in the world of the Internet, if you want to connect to any
site you must know the IP address for this site, but for the phone, there are
the so-called service queries, if you know the name of a person, use this
service to get the number. It is the same for Kadhum Internet, there are the
so-called Basel Domain Names, or domain names, where it is sufficient to connect
to the site such as Wikipedia, to know the domain name for this site, in this
case is wikipedia.org, when you type this address in your browser, the first
step by the browser is querying the IP address for this site, This is done
through the DNS, or DNS, and this by Kadhum translates domain names, the
addresses of the IP, for the computer to automatically connect with the site.
Domain Name System is useful for several reasons. Most obviously, it makes it
possible to replace IP addresses difficult to remember (eg, 207,142,131,206)
easy-to-remember domain names (such as wikipedia.org), and this makes it easier
for humans to deal with the network addresses and email addresses. The system
also allows the establishment of the names recognized and can be accessed
without contact with the central registry at a time
Is a system on the Internet and the abbreviated name of this system is DNS)).
The technology of this system is similar to the normal telephone directory which
we write the names of people who contact them with phone numbers, when we want
to contact someone, we just open the directory on the page that contains the
person's name and then read the number of the person and connect to it. For the
Internet, the method of communication between the devices are directly dependent
on the numeric address for Internet Protocol (IP Address), this address
component of (32) Double check in the fourth edition (IP Version 4) can be
represented as follows (208.77.188.166) and (the 128) Double check the version
six (IP Version 6) can be represented as follows (2001: db8: 1f70:: 999: de8:
7648:6 e8). When the device wants to communicate with another device he has to
know the numeric address for this device to exchange data with him. Before you
use the DNS system was the creation of defined names for devices is done through
files called Host File, but with the increase in the number of devices included
in the network and system design to replace the DNS Host files distributed
database Distributed) Database) with the volume of non-specific theory can be
distributed and Automation Department, in addition to improving performance and
through the use of a hierarchical structure to define the elements of domain
Domain, Serving DNS provides translation of names used to denote the elements of
the range to the IP addresses of approval, as the use of names with particular
significance is easier to use addresses from IP. Thus this system can be defined
as a central information base (distributed) on the Internet containing
information and domain names and addresses of digital devices under each band.
This system is split into parts network information is managed locally and
access them via the network. How do we call the (DNS) domain technology-based
label in the range of the assembly hierarchy of domain names, where known
Domains many different levels in a hierarchical structure, and these levels are:
Domain root (Root Domain): represents the highest level in the hierarchical
structure and referred to a period (.)
The summit level of the bands (Top-Level Domains): This level is the shortcuts
of symbols or three, reflecting the type of organization or geographic location,
or anything else, and the following table shows some examples of shortcuts that
represents the level of summits Top level Domains.
Column 0 Column 1
gov Government organizations (NGOs)
Line Line
Line Line
Line Line
Line Line
Line Line
Line Line
Line Line
Line Line
Line Line
Can top-level domains Top Level Domain that contains the second-level domains
Second Level Domains, as well as to users. 3 - The second level of the bands
(Second Level Domains): can contain this level of users, and on the other bands
called Sub domains
4 - the names of hosts (Host Names): the host names point to the computers
available on the Internet or in the privacy of network and host names are always
in the leftmost part of the name.
What is (FQDN)? Is an abbreviation of the phrase (Fully Qualified Domain Name)
means a fully qualified domain name, which contains the device name and the
names of all the ranges that branch by the name of the device from the second
level of scopes and the summit level to the root domain. As in the previous
image is the host address (www.nic.net.sy) fully qualified name. System
architecture (Structure): Before getting in the way the DNS you will learn the
basic components of this system, even in abbreviated form: 1 - namespaces
(Domain Name Space): and is namespaces which reflects all the elements of scale,
as is appended to the names of the scale it, and can be considered a database
system. 2 - servers (Name Servers or Servers): contains the servers (DNS)
information for the addresses of client computers on the network and the IP
addresses of approval, providing such information to users who send requests
((Requests for access to such information . is not in a server (Name Server) is
able to provide the information for one reason or another, the request can be
passed to a different server. 3 - client devices on the network (Resolvers or
Clients): and they are users of the network who are applying for transfer of the
name given corresponding to the IP address and necessary in order to communicate
over the network. If we want more in-depth system architecture, we find that it
consists of the following components: 1 - Domain Name (Domain Name): is the name
used on the Internet and networks to represent a specific destination
electronically, using the to denote the name or its branches, subsidiaries, or
to indicate the services or the names of its organs, or even e-mail addresses.
and other records: Other uses that have a particular use and is less prevalent
than previous records (eg: TXT, AAAA, SRV, SIG, RP, LOC ...).
3 - File-scale (Zone File): a file that contains all records of sources
(information) on the name of a certain range, and is saved and the range of file
management via a server domain names.
4 - Server DNS (Domain Name Server): a server that is to respond to user
queries, or decisions based on what is contained in a domain name Enquirer him.
There are at least a main server for each domain name, through which the
management of all domain registries and to perform updates to and this server is
the main owner of an original copy of the file name of the domain, and there are
also several sub-servers take a copy of that file in coordination with the main
server.
5 - Decision (Resolver): a device that is (on behalf of users) to send queries
on any information present in the system to the DNS servers and then send the
final outcome to inquire (users or devices), and is usually placed on each
separate network (especially ) a decision so that translates names to addresses
for all users and devices on the network through a system of domain names, is
also scheduled to also stores all the results of previous queries in the
temporary logs (DNS Caching) to provide effort and to improve performance
instead of looking for the same result inquiry again during a certain period
(determined by the main server for the domain name).
6 - The user (user): is the ultimate beneficiary of the system (person or
software or hardware) to deal with the system through the decision to get the
information required, as this can be used is the person who registered the
domain name for use later.
The way the system works the way the DNS process can be summarized in this
simple example: 1. The user is required from the nearest server decision
(Resolver) numeric address for the domain name (en.wikipedia.org / wiki /
Example.com), and usually have to be defined in the network settings on the
user's computer.
2. The decision to search for the main server for the name of the required scale
and through the Q servers public key (Root Server) and then in charge of the
domestic top-level domain, which follows a scale that up to one of the servers
responsible for that domain and sends the inquiry to them.
3. DNS server is responsible for the research domain in a file available
bandwidth have on the required information and then respond to that inquiry, the
address of the digital range.
4. The decision to respond to a user's query with the result obtained and is
stored in the temporary logs it (to be used at the request of the same inquiry
by another user during a certain period).
References
Domain Name System - Wikipedia, the free encyclopedia (URL :
en.wikipedia.org/wiki/Domain_Name_System) Domain Name System (DNS) Security By
Diane Davidowicz (URL: compsec101.antibozo.net/papers/dnssec/dnssec.html) DNS
Servers - What Is a DNS Server?
Greetings to you
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