Geek-of-All

A Long Term Evolution (LTE) network is a type of wireless communications network designed to provide broadband Internet and phone service to mobile phones and other types of devices. Voice calls on an LTE network are converted into small chunks of data, which eliminates the need for separate voice circuits. These types of networks are often marketed as "4G" and are capable of offering speeds that rival wired broadband services. They also offer increased capacity, which may help wireless carriers deal with the increasing amounts of data used by smart phones and other devices. Behind marketing terms like 3G and 4G are a variety of individual technologies that power wireless phone and data networks. Each technology can be grouped by generation. Analog phone systems were first generation, the earliest digital networks used second generation or 2G technology, and about a half dozen different base technologies and incremental upgrades make up the third gen...

MPEG stands for the Motion Picture Experts Group , part of the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC), which creates and publishes standards for various areas of technology, respectively. MPEG standards address audio and video formats used online, in television broadcasts, and in DVD media. A number of MPEG standards are in current use, and more are sure to follow. Some well-known standards are explained briefly below. MPEG-1 : This first set of standards was developed for audio and video compression. Layer 3 is a codec within these standards, known simply as MP3, or the popular audio compression format for music. This video format was used to store movies on CDs, known as Video CD, or VCD. Quality is equal to that of a VHS tape, and compatibility playback on CD/DVD players is high. One drawback of this standard is that it only supports progressive footage, verses the inclusion of interlaced . ...

The Internet is a worldwide network of unrelated computers that can only communicate successfully by agreeing to incorporate a set of rules or protocols. One of the most basic tenets of the Internet is the Internet Protocol (IP) address. An IP address refers to a unique number assigned to each computer on the Internet. The IP number is called an "address" because it serves the same purpose as a home address -- it allows each machine on the Internet to be located by a numerical scheme. A domain name, such as geekofall.blogspot.com , also maps to a numerical IP address. An IP address is analogous to a street address or telephone number in that it is used to uniquely identify an entity. Dotted Decimals : Your IP address at home will be different from the IP address at your work office. And that IP address will be different from the one you would have if you used the free wireless hotspot at a coffee shop or hotel. But they all have one thing in common: Th...

A computer cookie, also referred to as an "HTTP cookie," is a small text file that contains a unique ID tag, placed on the user's computer by a website. In this file, various information can be stored, from pages visited on the site, to information voluntarily given to the site. These tiny files provide practical benefits to both users and website operators, and generally make surfing the net a smoother experience than it otherwise would be. Nevertheless, privacy advocates tend to be wary of them, since many users are unaware of exactly what information is collected, and how the information may be used or shared. Types of Cookies There are two types of computer cookies: temporary and permanent. Temporary cookies , also called session cookies, are stored for a short time and then removed as soon as the browser is closed. Permanent cookies , also called persistent cookies, are stored for a long time on the user's hard drive and, if deleted, will be ...

Codec stands for Co der- Dec oder (some say Co mpressor- Dec ompressor) and is used to describe anything which turns data into another form for storage or transmission, then changes it back for use. In traditional broadcasting, a codec is a physical device which turns analog video and audio data into digital form to be sent out over the air. It is also capable of turning received digital information back into an analog format. In computers, a codec is used as a way of compressing video, images and audio to a more manageable size. The majority use a lossy(Not all the data can be recovered from the file when decompressed) method of compression, but some are lossless. Lossless codecs, such as MSU or Huffyuv, reproduce the original video exactly, with no subsequent loss if the video is re-encoded. The more common lossy codecs lose varying degrees of information, but can save substantial amounts of space. A lossy codec may be transformative, predictive, or a comb...

A proxy server is a computer that sits between a client and a server to intercept requests. There are several uses of a proxy server, but the most common is to speed network traffic by caching pages or files that are requested often. By doing so, the server can deliver the request quickly, only polling the server when required. In this way, it not only speeds up network traffic, but also relieves server load. Major Internet hubs and Internet Service Providers (ISPs) employ dozens of proxy servers. Filtering or censorship is another use for a proxy server. A company that provides Internet connectivity to its employees might configure such a server to block requests for certain websites. It can also filter content based on configurable criteria to help enforce acceptable use policies. If a proxy server does not require a Web browser to be configured to use the proxy, it’s called a transparent proxy. Otherwise, the Web browser must point to the proxy in order to ...

A hotspot is any public area where computers that have been fitted with wireless network technology can gain access to the Internet. The computer accomplishes this by contacting a nearby wireless network with its internal NIC (Network Interface Card). The NIC seeks out the radio waves generated by wireless networks. When it detects a signal strong enough, it asks permission to log on to the network. Though this access is often free, other times the wireless network requires registration and a small fee before it will grant the computer access. Many cafés now feature a wireless network environment or hotspot, so that customers can sit leisurely, sip coffee and work on their laptops with full Internet access. Establishments that offer hotspots are referred to as being wired , somewhat of a misnomer since the technology is wireless. Ad A network that generates a hotspot basically consists of a wireless router and modem. The RF, or radio frequency, waves used by a w...