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There are several technologies which we use in our day to day life as a techie but has been overlooked. One of those interesting technologies is DHCP. I hope many of us never might have heard of it. And a great percentage of the us must have talked about it but not remembered. A usual scenario in the office's conference rooms is "Hey that port is not working. Use this one, it has DHCP".
I hope many of us still smiling and must be thinking that 'Oh! I know this stuff. What's new about it". But do you know how it's work? Perhaps "NO" or may be "YES". But don't worry, carry on. I'll tell you how this technology works in very simple terms. You'll enjoy for sure.
First of all, full form of DHCP. It is Dynamic Host Configuration Protocol. Huh! Boring. Wait, I'll try to make it interesting. Let's consider this scenario. A very good bank opens a separate help desk every time a new customer opens an account with the bank. As the number of customer grows, the need for separate help desk grows. With that, a demand of person for each help desk, demand of separate chair and table and so on so forth grows. The demand of resources keep growing with every new customer. Is it an acceptable situation. Surely "NO". So, what's the solution.
As an every intelligent person you must have the same idea in your mind which others have. Allocate a number of people in bank with separate resources. And when a person go to the bank send a person to the help desk which is free. With this we can save huge number of resources and utilize the resources in more efficient manner. There is no need of dedicated help desk for each customer.
Same logic applies to your machine. When you switch on your machine, it gets the IP address from a centralized server. Once you goes off, your ID address also and it may be assigned to another user. With this we can save the IP address which is a scarce resource. There is no need of assigning dedicated IP adress to your machine. Albeit in some scenario it is needed. This whole procedure of assigning and taking back of IP addresses is provided by DHCP. DHCP is the mastermind which enables a talk between your machine and centralized server.
I hope you have understood a basic concept of DHCP. With this sayonara. Probably I'll update you on messaging part of DHCP. So keep your eyes on this page.
What a extra-ordinary year this is. It;s full of events some good and rest not so good. Achievements for India in Olympics, biggest financial crisis since 1929-30 in US and now India's maiden mission to the moon. Not the much time left when we'll be in the group of handful of countries who has done this before. If everything goes right, on Oct 22 we'll start our journey to the moon with a blast.
It is a very big event for the whole nation and moment to proud. There is one more thing to be proud of is that the technology used in this mission is developed by Indian scientist. It shows that how independent we are when it comes to technology.
This is just a first step towards a long journey in space. I wish the whole team all the best and thanks for giving us this moment.
Recently I created a document on CDMA, which covers IS-95 and cdma2000 variants of it. So, thought of sharing it with you guys. Hope it will be helpful to you guys. You can find the document here
OFDM is a modified variant of FDM. Truly speaking it's a combination of FDMA & CDMA. We can clearly see how importance is OFDM technology in Telecom now. All the 4G technology use OFDM as a coding technique.
You can find a white paper on OFDM here
Mobile and related services are capturing all the headlines these days. We can see new ways of using our mobiles in various fields. One of them is Mobile Money Transfer (MMT). Recently held seminar (http://www.mobileworldcongress.com/mobile_money_transfer.htm) also talked about it. As the name suggest the mobile will be used for money transfer from one part of the world to another part. MMT is seen to be rival of Western Union money transfer service. As per Sunil Mittal, the chairman of Bharti Airtel, reckons that MMT is going to be the next big thing after SMS.
Till last year Western Union money transfer was charging US $24 on transferring US $98 i.e. 24% of the transfer sum. Vodafone initially planned for US $6 for the same amount. It is a massive difference. The business opportunities are huge. Currently US $206 bn is sent by transferred by migrant workers worldwide.
In India, Reliance Communication has launched (http://www.livemint.com/2007/09/06140353/Reliance-Communications-launch.html) its mobile money transfer facility last year on 6 September 2007. Airtel has also follow suit (http://www.contentsutra.com/entry/419-airtel-partners-with-mchek-launches-national-mobile-money-transfer/) the same.
Since some time i've been writing blogs in general topics. Yesterday I thought of writing some of technical blogs. So created this one. Hope it'll be liked by you guys as well. I m going to put some stuff soon. Till then wish me luck!!
