Computer Tweaks

There are many useful abbreviations which may help you in future,it will also help you in your competitive exams: DO READ IT CAREFULLY: HTTP: Hypertext Transfer Protocol HTTPS: Hypertext Transfer Protocol Secure IP: Internet Protocol URL: Uniform Resource Locator USB: Universal Serial Bus VIRUS: Vital Information Resource Under Sezied 3G: 3rd Generation GSM: Global System For Mobile Communication CDMA: Code Division Multiple Access UMTS: Universal Mobile Telecommunication System SIM: Subscriber Identity Module AVI: Audio Video Interleave RTS: Real Time Streaming SIS: Symbian OS Installer File AMR: Adaptive Multi Rate Codec JAD: Java Application Descriptor JAR: Java Archive 3GPP :3rd Generation Partnership Project 3GP: 3rd Generation Project MP3: MPEG Player 3 MP4: MPEG_4 video files AAC: Advanced Audio Coding GIF: Graphic Interchangeable Format BMP: Bitmap SWF: Shock Wave Fla...

There is a major avenue of attack which can be used to breach your security, and that is through what is generally called Social Engineering. Basically Social engineering involves tricking a user into revealing sensitive information or voluntarily providing access to their system.In other words it is a con or a scam.

Sniffers monitor network data . A sniffer can be a self contained software program or a hardware device with the appropriate software or firmware programming. Sniffers usually act as network probes or "snoops." They examine network traffic, making a copy of the data without redirecting or altering it. Some sniffers work only with TCP/IP packets, but the more sophisticated tools can work with many other protocols and at lower levels including Ethernet frames. here is a simple figure of network cable.   Sniffers were tools used exclusively by network engineers. Today, however, these utilities have become popular on the Internet with hackers and the merely curious. The U.S. Federal Bureau of Investigation (FBI) has utilized a famous sniffer system called "Carnivore" to help detect illegal Internet communications. The below figure shows the process of network sniffing:

A computer basically performs five major operations or functions irrespective of their size and make. These are 1) it accepts data or instructions by way of input, 2) it stores data, 3) it can process data as required by the user, 4) it gives results in the form of output, and 5) it controls all operations inside a computer. 1. Input: This is the process of entering data and programs in to the computer system. You should know that computer is an electronic machine like any other machine which takes as inputs raw data and performs some processing giving out processed data. Therefore, the input unit takes data from us to the computer in an organized manner for processing. 2. Storage: The process of saving data and instructions is known as storage. Data has to be fed into the system before the actual processing starts. It is because the processing speed of Central Processing Unit (CPU) is so fast that t...

An embedded system is a computer system that is specially designed to perform specific tasks within a larger system often with real time computing constraints. It is   embedded   as a part of a complete device that inculdes hardware and mechanical parts to acheive the tast of embedded system. By contrast, a general-purpose computer, such as a   personal computer   (PC), is designed to be flexible and to meet a wide range of end-user needs. Embedded systems control many devices in common use today. eg: Washing Machines, Micro Waves etc. Embedded systems contain processing cores that are typically either microcontrollers or   digital signal processors   (DSP).   The key characteristic, however, is being dedicated to handle a particular task. Since the embedded system is dedicated to specific tasks, design engineers can optimize it to reduce the size and cost of the product and increase the reliability and performance. Some embedded systems are m...

Steve Jobs belongs to the league of famous college drop-outs that include Bill Gates ( Microsoft), Larry Ellison ( Oracle), Michael Dell (Dell) and Richard Branson (Virgin group).    Jobs, whose personal wealth is about $9 billion, in early years survived on money he got from selling coke bottles and weekly free meals at Hare Krishna temple in Oregon.  Jobs traveled to India in search of spiritual enlightenment and took to Buddhism, shaved his head and wore Indian cloths. Worked with HP in Palo Alto in California where he met Steve Wozniak, with whom he founded Apple Publishing house Simon & Schuster is set to publish the authorized biography of Jobs in November that will include his resignation. In the multiple-Oscar winning Hollywood movie Forest Gump, the lead character by the same name, played by Tom Hanks, refers to Apple as "some sort of fruit company" whose shares Gump ends up owning. In July 1976, Apple sold its first PC, ...

This post may seem to be out of context. But you can consider it as a review of some websites. Websites that provide free online content for education. For any student it is very essential to get good quality study material. Specially when we talk about Indian students they don't refer authentic material. These free resources might help them get good study stuff at their computers with ease. So here is the list of websites that provide Free & Useful Resources for Educational Content.   The fist website in my list is: 1) Academic Earth : Academic Earth is an organization founded with the goal of giving everyone on earth access to a world-class education. At Academic Earth, they are working to identify these barriers and find innovative ways to use technology to increase the ease of learning. Know more about Academic Earth by visiting theri website: http://academicearth.org/about 2) NPTEL : NPTEL provides E-learning through online Web and Vid...