Competitive Exams: Current Affairs 2011: Information Communication Technology
Information Communication Technology
CERT-in (Indian Computer Emergency Response Team)
CERT-In is the national nodal agency for responding to computer security incidents as and when they occur.
LTE (Long Term Evolution), 4G (4th Generation) and BWA (Broadband Wireless Access)
Telecommunications equipment major Nokia Siemens Networks (NSN) demonstrated for the first time its Time
Division Duplex version of LTE (TD-LTE) technology in India in Bangalore. The technology, running on broadband wireless access (BWA) spectrum, for which licences were issued recently, will herald the fourth generation (4G) of technology in the wireless communications space.
Next generation network (NGN)
A Next generation network (NGN) is a broad term to describe key architectural evolutions in telecommunication standards. The general idea behind the NGN is that one network transports all information and services (voice, data, and all sorts of media such as video) by encapsulating these into packets, like it is on the Internet.
NGNs are commonly built around the Internet Protocol, and therefore the term all-IP is also sometimes used to describe the transformation toward NGN.
Internet Protocol Version 6 (IPV6)
Internet Protocol Version 6 (IPv6) is a version of the Internet Protocol that is designed to succeed Internet Protocol version 4 (IPv4) that is currently used since 1981.
The main driving force for the redesign of Internet Protocol was the foreseeable IPv4 address exhaustion. IPv6 was developed by the Internet Engineering Task Force (IETF).
3D TV (3-Dimensional TV)
Japanese electronics giant Toshiba recently said it would launch the first liquid crystal display 3D television that does not require users to wear special glasses.
Current 3D-capable televisions require viewers to wear glasses that act as filters to separate images to each eye to create the illusion of depth.
Rival Sharp earlier this year unveiled a small glasses-free LCD touchscreen that shows 3D images for use in mobile phones, digital cameras and games consoles such as Nintendo's 3DS, to be released in Japan in February 2011.
There are several techniques to produce and display 3D moving pictures. The basic requirement is to display offset images that are filtered separately to the left and right eye. Two strategies have been used to accomplish this: Have the viewer wear eyeglasses to filter the separate offset images to each eye, or have the lightsource split the images directionally into the viewer's eyes (no glasses required)
Stuxnet is a computer worm targeted at industrial equipment that recently targeted Iran's nuclear facilities (especially uranium enrichment facility at Natanz) to hinder Iran's nuclear program. Iran alleged the role of western powers.
Russian digital security company Kaspersky Labs described it as a working and fearsome prototype of a cyberweapon that will lead to the creation of a new arms race in the world.
Touch screen: How does a touch screen function?
A basic touch screen has three main components: a touch sensor, a controller, and a software driver. The touch screen is an input device, so it needs to be combined with a display and a PC or other device to make a complete touch input system.
Touch sensor: A touch screen sensor is a clear glass panel with a touch responsive surface. The sensor generally has an electrical current or signal going through it and touching the screen causes a voltage or signal change. This voltage change is used to determine the location of the touch to the screen.
Controller: It takes information from the touch sensor and translates it into information that microprocessor can understand.
Software driver: It tells the device's operating system how to interpret the touch event information that is sent from the controller. Most touch screen drivers today are a mouse-emulation type driver.
Department of Telecommunications will begin a nationwide testing of mobile towers to check harmful effects of electromagnetic frequency radiation they emit.
National Broadband Networkthe Telecom Regulatory Authority of India (TRAI) has recommended setting up a National Broadband Network at a cost of to achieve 16-crore broadband connections by 2014.
Stating that a National Optical Fibre Agency (NOFA) will be set up to establish this broadband network, TRAI said the National Broadband Network will be an open access optical fibre network connecting all habitation with population of 500 and above. It will be established in two phases.
Open source software for office functions such as document editing, making slides, spreadsheets and databases. It is similar to Microsoft office suit that is proprietary.
Courtesy: The Hindu and Times of India