Finding Websites With DNS Servers
Posted On : Jan-11-2011 | seen (182) times | Article Word Count : 377 |

Computers that translate names to numbers are called DNS servers. However Tarik Cohen Limited Jersey , most DNS servers don't actually know which numbers are associated with which names. Instead, they must query another DNS server for the requested web address. When accessing websites, domain names such as are used to indicate which specific site is wanted. However, in order to figure out how to reach these websites Mitchell Trubisky Limited Jersey , a computer must convert the name, or web address, to a number, called an IP address. DNS Anthony Miller Limited Jersey , which stands for Domain Name System, is how the translation from name to number is achieved.

Computers that translate names to numbers are called DNS servers. However, most DNS servers don't actually know which numbers are associated with which names. Instead, they must query another DNS server for the requested web address. When a computer is trying to figure out what IP address is associated with Roquan Smith Limited Jersey , it asks its local DNS server, which is probably run by the local internet service provider. The local DNS server then contacts the DNS server that is associated with . Because this DNS server knows the IP address for , it is called an authoritative DNS server for .

Every working web address has at least one authoritative DNS server. Without such a server, no computer would ever be able to contact the site because its IP address would never be found. In fact Khalil Mack Limited Jersey , most web addresses are associated with multiple DNS servers. This is so that if one of the servers crashes or otherwise becomes unable to respond to requests, other servers will be able to complete the work, preventing interruption of the site.

Some DNS servers are not authoritative. They exist only to ask the authoritative DNS servers to translate names to IP addresses. Sometimes people run these DNS servers on their home computers if they have trouble with their service provider's DNS server. On the other side of the coin, there also exist DNS servers that are authoritative-only. These servers respond only to requests for web addresses whose IP addresses they know Walter Payton Limited Jersey , and they reject any other requests. In the middle are the DNS servers that are authoritative for some addresses, but will respond to other requests as well.

When they are working, DNS servers are an invisible, but very crucial part of the Internet. Without authoritative DNS servers Riley Ridley Elite Jersey , websites would not be accessible except by their IP addresses, which are much harder to remember than names are.

Orthodontist in Hagerstown, MD Health Articles | April 29, 2013
There is a difference between orthodontists and cosmetic dentists.? Today Orthodontists have come up with many solutions such as applying braces or invisible braces.

Straight David Montgomery Elite Jersey , bright teeth and an attractive smile are one of the most charming features anybody can posses! A great smile attracts the opposite sex, helps leave a good impression on your clients and gives you a jolly good persona to go along. Healthy teeth can even change the shape of your face! But if you are not confident about how your teeth look, do not worry.? There is many a certified orthodontist in Hagerstown, MD Akiem Hicks Elite Jersey , who is available at your service.

Job description of an orthodontist

An orthodontist more or less is a dentist specializing in the prevention or correction of irregularities of the teeth. An orthodontist differs from a general dentist in the sense that he or she is supposed to specialize in preventing or treating any kind of facial or dental irregularities. An orthodontist after getting the degree should receive additional training through a good orthodontic residency program for practicing it professionally. Orthodontist in Hagerstown, MD, must get these certified degrees to get his or her license.

There is a difference between orthodontists and cosmetic dentists. The job of a cosmetic dentist is to apply braces or invisible braces etc. Unlike a cosmetic dentist an orthodontist performs the job of straightening teeth and aligning jaws. Orthodontists in Hagerstown, MD Tarik Cohen Elite Jersey , must treat such problems only with an accredited program. Cosmetic dentistry does not involve any such accreditation.