Wi-Fi is the popular name given to wireless internet technology. This technology depends upon radio signals to deliver high speed internet connection. Wi-Fi is in fact a registered trademark and it is owned by an organization known as the Wi-Fi Alliance. Wi-Fi works on wireless network as is widely known. It is dependent on radio signals which are propagated through space with the help of an antenna. An access point lies at the core of any wireless network. The access point broadcasts the radio signal and any wi-fi equipped computer in the vicinity grabs the signal and connects to the network.It goes without saying that the computer or any other device that is used to connect to the wireless network must be equipped with an adapter. Any device whether it is a computer or a video game console or a smart phone or a digital audio player with the necessary equipment can connect to the internet when it comes within the range of the network. Often, one or more access points are interconnected to enhance the range of the network and such an enhanced range is called a hot spot. Hot spots can be of varying area ranging from a few small rooms to many square miles.Wireless hot spots provide public access to the internet and sometimes they are even offered free of charge by businesses like airports, hotels and coffee shops to attract customers. Routers equipped with a modem and an access point are used in offices and homes for private usage. Such routers can provide internet access or network connectivity to all wireless devices connected to it. These devices can also be used for client-to-client connections without using a router. They are known as the wireless connections. The greatest advantage of wireless connections are that even places like your kitchen or your garden shed can have network access. Now with the emergence of cellular networks or mobile broadband as they are popularly called, users can easily create their own wireless hot spot and connect to the internet.
Considering the emerging trends in wireless technology many cities and campuses decided to transform the entire area into a hot spot. However there have been failures as well as some remarkable successes. Sunnyvale in California was the first city to be successful and provided wi-fi access free of charge to the entire city. Some universities in the United States and the rest of the world are successful in offering wi-fi access in their campuses. The wireless connections without a router is also becoming popular especially with video game consoles. Another application is called the wireless direct which allows for file transfers and data sharing through a secured channel.Apart from private home usage, the wi-fi technology has grown by leaps and bounds especially within business and industrial premises. By providing more and more access points, businesses can now avoid the expenses of laying down extensive cable networks to connect their various departments and people. Even places where it was not possible to lay cables like outdoor areas or monuments are now connected thanks to the wireless technology. As time has progressed more technical stuff has been concentrated at a centralized hub and the role of the individual access points are now downgraded to be dumb receivers. Overall, the wireless technology holds much promise for the future.
The server side of a website is where all the application processing takes place. In the 90s dynamic websites used mostly Perl, which is largely based on C. Then came java, php, ruby, and .NET. Most commonly used are php and java. The main semantic difference between them is that java is object oriented, whereas php was mostly a scripting language. However, php is becoming increasingly object oriented. Aside from the differences in their libraries, php5 semantics have practically become java. Most hosting companies prefer to support php because it is open source and very easy to set up on an Apache server. You’d be lucky to find an inexpensive host that supports jsp. Java and .NET are still mostly used by businesses in enterprise level applications mostly because of the nice development tools they offer. It’s important to stay organized when you have many people working on a project and java/.NET integrated development environments (IDE) help a lot. A couple of free java IDEs are Eclipse (also for php) and NetBeans.Back in the early 90s, SEO was all about keyword stuffing, backlinks, and meta tags. Now everything seems to revolve around the blogosphere. It seems like I can’t go 10 minutes watching tv without hearing the phrase “follow us on Twitter”. It used to be just a fun app to have on your site, but now it is absolutely essential to have a well syndicated blog that pings blogging sites like Bloglines and Technorati. No matter what your business is, a popular blog is becoming a significant metric by search engines to evaluate how well you should be ranking in the search results. Search engines evaluate the quality of the content you provide based on how much traffic you drive to your site from article sites for example. Also, it’s a waste of time to build a bunch of low quality links to your site from irrelevant websites and directories with low page rank and traffic. Your energy is put to much better use to find a partner for your business who is already established in the online world. One link from your partner’s website is worth more than a thousand links from link farms.
Travelling abroad has always involved an element of adventure, but even as recently as 20 years ago visiting countries as technically advanced as the USA meant that you literally went into a communications black hole until your return. That is because the cost of transatlantic phone calls was so outrageously high that your entire holiday budget could be used up calling home, and that was just for a few minutes.However, advances in competition amongst telephony companies have changed that. For example, travellers to the USA can purchase great value phone cards starting from as little as £5 for approximately 167 minutes of calls to a landline number in London. Or, if they prefer travellers can also call home using a mobile phone. But, even though that’s not as relatively expensive as it was to use landlines at the end of the 1980s, it is still an expensive way to keep in touch with calls to home typically costing around £1.37 – £1.99 per minute outside Europe.As technology has advanced the amount of differing communication methods have also grown exponentially. Now even without a landline or mobile phone, it is still possible to call home just as long as you are connected to the internet. VoIP (Voice over internet protocol) now enables broadband users to be able to communicate both freely and for free with anyone on the internet who has the same software installed.
Indeed, modern technology expands at such a phenomenal rate each year that nothing seems impossible when it comes to global communication. Logging into your email account when in the heart of Peru to send and receive messages or even using your laptop to make free calls to home via WiFi at the top of the CN Tower in Toronto; both are eminently possible in the 21st century.Wherever you go in the world the internet has invariably got there first, unless the destination is extremely remote and off the beaten track. For those on extended holidays or especially back-packing then internet phone calls can be a great way to make sure everyone back home realises what a great time you are having, as well as a great way for you to keep in touch with happenings on the domestic front. But the real advantage is that you save your much needed cash to spend on essentials or fun activities and without having to spend it all it on expensive phone calls. So, before heading off to foreign parts make sure you open an internet VoIP account, and you’ll have the ability to stay in touch just about wherever you go!