Anurag RANA

On Friendship Day 2011, get reunited with your old friends with whom you have lost touch. All of us have happy associations and memories with our friends whether they are childhood friends, teenage friends, work friends, neighborhood friends or just any other friend. Friendship day is the time to get all nostalgic about every friend that you have now and had in the past and celebrate the occasion together if possible. Childhood friends always have a special place in our heart; it is with them we have had our first brush with this feeling called friendship. Organizing a get-together, with all these friends on friendship day 2011, sounds like a wonderful idea. Celebrate Friendship Day on Sunday, August1, 2011 with all your beloved friends. We know that it might not be possible to have all your friends under a single roof on this day. However, you can at least attempt to bring in together as many friends as possible. Start by gathering their contact details, once you get touch with one o

Introduction to How Webcams Work Photo courtesy Amazon.com Creative Labs Webcam If you have been exploring the Web for any length of time, then you have run across any number of Webcams in your travels. Webcams range from the silly to the serious -- a Webcam might point at a coffee pot or a space shuttle launch pad. There are business cams, personal cams, private cams, traffic cams... You name it and there's probably a Webcam pointed at it. Have you ever considered setting up a Webcam yourself? You might want to create a funny Webcam by pointing it at your hamster or putting it inside your refrigerator. But it turns out there are lots of productive uses for Webcams, too. For example: • You will be out of town for a week and you want to keep an eye on your house. • You'd like to be able to check on the baby sitter and make sure everything is OK while you are at work. • You'd like to know what your dog does in the back yard all day. • You want to let the grandparent

The location of the hosts file depends on your operation system. Windows XP, Vista and Windows 7 C:\WINDOWS\system32\drivers\etc\hosts Windows 2000 C:\WINNT\system32\drivers\etc\hosts Windows 98/ME C:\WINDOWS\hosts Note! Make a backup of the hosts file and put it somewhere safe, in case you mess up. 1. Open the hosts file using Notepad or other plain text editor. 2. Copy the following: # block facebook 127.0.0.1 login.facebook.com 127.0.0.1 http://www.facebook.com 127.0.0.1 blog.facebook.com 127.0.0.1 apps.facebook.com 3. Paste them into the Hosts file after 127.0.0.1 localhost 4. Save and close the Hosts file. 5. Reboot your computer to apply the changes. 6. Try to open Facebook into a browser.

The Indian Space Research Organisation (ISRO) has built a supercomputer, which is to be India’s fastest supercomputer in terms of theoretical peak performance of 220 teraflops (220 trillion floating point operations per second). The new Graphic Processing Unit (GPU)-based supercomputer named SAGA-220 or Supercomputer for Aerospace with GPU Architecture-220 teraflops will be used by space scientists for solving complex aerospace problems. ISRO spokesperson S Satish said the supercomputer would ensure calculations took place in less time. “It would really be of great use when we will start testing our advanced vehicles like Mark III. It will drastically increase speed of calculation and we can also evaluate more parameters,” he said. ISRO’s existing supercomputer is only 70 teraflops, whereas this supercomputer can be ramped much higher than 220 teraflops. According to ISRO, the present GPU system offers significant advantage over the conventional CPU-based system in terms of cost,

Despite the myriad controversies surrounding him, Sathya Sai Baba remained a popular Guru thoughout his life with a huge number of followers around the world. Sai Baba, as he is popularly known, was an iconic figure for over five decades, who endeared himself to the people through various institutions, which promote egalitarian values, education and public health. Here's a profile of the Sai Baba of our times. Birth & Childhood: Sathya Sai Baba was born in Puttaparthi, a small village in South India, on November 23, 1926. As a child, he demonstrated exemplary qualities of compassion, generosity, and wisdom, which clearly distinguished him from the other children of his village. Boy Turns Saint: On October 29, 1940, at the age of 14, he declared to his family and to the people of his village that he would henceforth by known as Sai Baba and that his mission was to bring about the spiritual regeneration of humanity by demonstrating and teaching the highest principles of truth

• the role of the data link layer, • Three common error detection and correction methods. • two basic approaches to controlling access to the media, • common sources of error and its prevention, • Several commonly used data link protocols. INTRODUCTION The data link layer sits between the physical layer and the network layer. The data link layer accepts messages from the network layer and controls the hardware that actually transmits them. Both the sender and receiver have to agree on the rules or protocols that govern how their data link layers will communicate with each other. Introduction A data link protocol provides three functions: • Controls when computers transmit (media access control). • Detects and corrects transmission errors (error control). • Identifies the start and end of a message (message delineation). MEDIA ACCESS CONTROL Media access control (MAC) refers to the need to control when devices transmit. MAC becomes important when several computers share