Digital Subscriber Line (DSL) Digital Subscriber Line new technology that takes advantage of standard copper telephone line to provide secure, reliable, high-speed Internet access. DSL refers to the family of digital subscriber line technologies, such as ADSL, HDSL, and RADSL. Connection speed for DSL ranges from 1.44 Mbps to 512 Kbps downstream and around 128 Kbps upstream. Unlike traditional connections DSL such as analog modems and IDSN, DSL deliver continuous “always on” access. That means
introduction Digital subscriber line (DSL) technology transforms an ordinary telephone line into a broadband communications link, much like adding express lanes to an existing highway. DSL increases data transmission rates by a factor of twenty or more by sending signals in previously unused high frequencies. DSL technology has added a new twist to the utility of twisted-pair telephone lines. DSL is a family of technologies that provide Internet access by transmitting digital data over the wires
Analog and Digital Technologies To understand the technologies of analog and digital conversions we must first understand what analog and digital transmissions are. Analog transmissions are a continuous variable in amplitude and frequency. The frequency band that they operate over defines analog circuits. People generally produce a bandwidth of 9,900Hz with frequencies in the range of 100Hz to 10,000Hz. Speech that falls between 250Hz and 3,400Hz is considered intelligible speech and therefore the
WAN: WAN is a computer network spanning a relatively large geographical area. WAN stands for: Wide area Network. WAN consists of more than two local area networks (LAN) LAN is also a computer network but unlike WAN it spans in a relatively small area such places as a home, school building, office building or computer laboratory. The most well-known or the most popular WAN is the internet. Unlike LAN, WAN is usually not owned by a single organisation or company but exists under distributed or collective
model that adopted publicity and public information strategy, and the Two-Way Communication model, special emphasis being on Two-Way Asymmetric strategy, were the main model. Each one of these model had a main aim; the main aim of publicity was to spread propaganda; the aim of public information was information dissemination; and lastly the aim of two-way asymmetric strategy was to scientifically persuade the pub... ... middle of paper ... ...owards ensuring the public supported this policy.
My Use of ICT at Home and at School Demographics I am a 16-year-old boy who lives in London. I am of background. I live in a borough that is a developing area and a borough that is full of people from all different ethnic backgrounds; a lot of people in the borough now use computers for whatever reason. As the bid for hosting the 2012 Olympics goes on, Newham is one of the hosts and for this reason the borough is advancing a lot in terms of technology to win the bid from other more
site is partitioned into open and secure segments. Access security is the corner stone of the Extranet concept. Secure connections using Virtual Private Networks (VPN) between computers create a virtual tunnel, using inexpensive and ubiquitous public lines (see Figure 3). (Management Information Systems, pg. 291) Tunnel technology can also be used to individualize the Extranet site, providing access only to the features that a particular user is entitled to.
Introduction A disaster is one of the biggest challenges that tests the organizational structure of an urgent care clinic. Given that in disaster situations we are under an abnormal condition characterized by confusion, urgency and often danger, it implies planning in advance the care clinic response, in order to minimize the danger of possible damage to the integrity of patients and the security of the building. The internal and external disasters reduce the attention capacity of the institutions