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22/10/2014

Fortunate is the one who has learned to Admire, but not to envy. Good Wishes for a joyous Diwali and a Happy New Year with plenty of Peace and Prosperity.

03/07/2013

How Domain Name Servers Work:-

If you've ever used the Internet, it's a good bet that you've used the Domain Name System, or DNS, even without realizing it. 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. Its basic job is to turn a user-friendly domain name like "howstuffworks.com" into an Internet Protocol (IP) address like 70.42.251.42 that computers use to identify each other on the network. It's like your computer's GPS for the Internet.

Computers and other network devices on the Internet use an IP address to route your request to the site you're trying to reach. This is similar to dialing a phone number to connect to the person you're trying to call. Thanks to DNS, though, you don't have to keep your own address book of IP addresses. Instead, you just connect through a domain name server, also called a DNS server or name server, which manages a massive database that maps domain names to IP addresses.

Whether you're accessing a Web site or sending e-mail, your computer uses a DNS server to look up the domain name you're trying to access. The proper term for this process is DNS name resolution, and you would say that the DNS server resolves the domain name to the IP address. For example, when you enter "http://www.howstuffworks.com/" in your browser, part of the network connection includes resolving the domain name "howstuffworks.com" into an IP address, like 70.42.251.42, for HowStuffWorks' Web servers.

You can always bypass a DNS lookup by entering 70.42.251.42 directly in your browser (give it a try). However, you're probably more likely to remember "howstuffworks.com" when you want to return later. In addition, a Web site's IP address can change over time, and some sites associate multiple IP addresses with a single domain name.

Without DNS servers, the Internet would shut down very quickly. But how does your computer know what DNS server to use? Typically, when you connect to your home network, Internet service provider (ISP) or WiFi network, the modem or router that assigns your computer's network address also sends some important network configuration information to your computer or mobile device. That configuration includes one or more DNS servers that the device should use when translating DNS names to IP address.

03/07/2012

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03/07/2012

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29/06/2012

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29/06/2012

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28/06/2012

28/06/2012

IT Services & How to Cost Them - IT service management (ITSM) calls for assigning costs to all those items in the IT...

28/06/2012

YOU HAVE 3 CHOICES FOR BUILDING A CLOUD

28/06/2012

Open Cloud Architectures. Enterprise-level virtualization. Organizations are expanding their IT options at an increasing rate. Are you keeping pace? Red Hat training certifications put you at the forefront of the IT race. Find out more now.

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28/06/2012

Have you experience this? You are not sure how to explain what Open Source is to those with little computing background. The writer of this article said it is like sharing a recipe. What would your analogy be?

Open source beyond technology. Explore how the principles behind open source--collaboration, transparency, and rapid prototyping--are proven catalysts for innovation.

28/06/2012

Openness makes cloud computing possible. CloudForms makes it useful. Watch this video to find out more.

Openness makes cloud computing possible. CloudForms makes it useful. Manage your open cloud to do what you need to do, when you need to do it.