Who hasn't heard about the internet? No one! Unless, of course, you have been living in a cave for the past decade! The internet is the crowning achievement of the Information Age (which is what we call this age we live in). It has completely revolutionized how we communicate and how we live.
But what exactly is this thing we call the internet? In a nutshell, the internet is the interconnection of computers around the world. It allows users of these computers to communicate in a variety of ways: through email, streaming conferencing, website information, file sharing, and others.
For you to connect to the internet, you will need a computer and a connection to an ISP (Internet Service Provide). Your ISP will provide you with a connection and the means to connect to the internet.
The internet started out as a project of ARPANET (Advanced Research Projects Agency of the US Department of Defense), which was commissioned by the Pentagon to look into the uses of networking for military purposes in 1960. From here, the internet was steadily developed to benefit the whole populace.
In the beginning, the internet could only chug along at a low data transfer rate. Today, ISPs offer speeds from 56 kilobytes per second to 10 megabytes per second or more! This allows people to transfer more data which facilitates better communication.
The internet impacts so much of our daily lives that it has become indispensable to so many people and businesses.
Uses of the Internet
1. E-mail - Gone are the days when people had to wait weeks or even months to receive postal mail! With the internet, an email can be sent and reach its destination instantaneously! E-mails have made the world a smaller place, allowing people separated by great distances to correspond.
2. Instant Messaging, Chat Rooms - Services such as AIM, Yahoo Messenger, and MSN Messenger allow people to send messages instantaneously, much like a phone conversation using written messages. There are also "virtual rooms" on the internet facilitated by services developed for this reason. These "rooms" allow many users to chat using written messages.
3. Webpages - Webpages are like virtual homes on the internet. They allow people to post documents on the internet that are easy to browse through and navigate. As time passed by, webpages gained more functionality. Today you can download files, submit files and comments, and purchase items online.
Webpages serve many functions: some promote businesses, some are purely informational, and some become money making vehicles. The internet spawned what we now call e-commerce. This involves purchasing over the internet. You can even use online payment methods such as PayPal and other methods.
4. Streaming Services and File Sharing - The internet also allows file sharing. This allows you to share files with other users. These files may be large or small. Streaming services allow you to receive data such as radio feeds, or even video feeds over the internet.
A Brave New World
The internet makes so much things possible. In the next few years we will see much more. In the past, the internet was limited to large institutions. Now residential internet has become more affordable. Today's technology even allows mobile internet! You could surf the internet from a mobile device such as a cell phone, or you could surf from your laptop in areas that offer Wi-Fi (Wireless Fidelity).
http://www.1articleworld.com/Article/Internet--a-Whole-New-World--Wide-Web--Including-Video-and-Audio/15328
Tuesday, August 28, 2007
LOAD BALANCING LIGHTENS SERVER LOAD
Load balancing is the even distribution of computer processing and communication activities so that a server is not overwhelmed. Load balancing is especially important for networks where it is difficult to predict the number of requests that will be issued to a server.
Busy Web sites typically employ two or more Web servers in a load-balancing scheme. If one server starts to get swamped, requests are forwarded to another server with more capacity. Load balancing is therefore a service that is employed on more sophisticated site deployments.
Most service providers that offer managed hosting will provide load balancing services to their clients if they experience constantly heavy traffic on their Web sites. Multiplexing traffic amongst several servers permits better site availability. Load balancing therefore distributes traffic efficiently among network servers so that no individual server is overburdened.
In the early days of the technology, many load balancing solutions where implemented through customized domain name server configurations. This approach called “DNS round robin,” rotated incoming requests from Web browsers to multiple Web servers. The result was that all requests to the particular Web site were evenly distributed among all of the machines in the cluster.
The advantage of this system was that it was inexpensive, as a system administrator only needed to make a few changes in order to implement it. Its major disadvantages however was that DNS round robin did not support server affinity or high availability.
Server affinity is a load-balancing system's ability to manage a user's requests, either to a specific server or any server, depending on whether session information is maintained on the server or at an underlying, database level. Without server affinity, DNS round robin could not by itself exercise control over incoming traffic without the aid of cookies, hidden fields or URL rewriting.
Due to its very nature of not being able to exercise this type of control, DNS round robin could not natively handle browser caching, since incoming requests were randomized. DNS round robin also had tremendous difficulties dealing with high availability, since the DNS system requires a large amount of time of propagate information and cache it throughout the network. As a result, DNS round robin is a more antiquated approach toward managing server load. Load balancing, however, is much more sophisticated today, because it is mainly implemented through appliances such as smart switches.
Hardware load balancers solve many of the problems faced by the round robin software solution through virtual server addressing. A load balancer shows a single, virtual server address to the outside world, which maps to the addresses of each server within the cluster. When a request comes to the load balancer, it rewrites the request's header to point to other machines in the cluster. If a machine is removed from the cluster, the request does not run the risk of hitting a dead server, since all of the machines in the cluster appear to have the same IP address. This address remains the same even if a node in the cluster is down. Moreover, cached DNS entries around the Internet are not a problem. When a response is returned, the client sees it coming from the hardware load balancer machine. In other words, the client is dealing with a single machine, the hardware load balancer.
Because one machine is dealing with the management of an entire cluster, server affinity and high availability is actually integrated into the hardware load balancer solution. Indeed, with the hardware solution, a service provider can offer fail-over services, cluster management, traffic routing and geographic load balancing across multiple sites and points of presence.
Hardware also is a much faster traffic routing solution because it is solid-state device that more efficiently processes requests than software on a server deployment can
Link load balancing is a key element in the overall network Intrusion Prevention effort. Expert Link Load Balancing guards the network against internal and external attacks such as viruses, worms, Trojans, anti-scanning and protocol anomalies. Above all hovers the ultimate link load balancing challenge and network threat – DOS - Denial of Service.
http://www.1articleworld.com/Article/LOAD-BALANCING-LIGHTENS-SERVER-LOAD/49934
Busy Web sites typically employ two or more Web servers in a load-balancing scheme. If one server starts to get swamped, requests are forwarded to another server with more capacity. Load balancing is therefore a service that is employed on more sophisticated site deployments.
Most service providers that offer managed hosting will provide load balancing services to their clients if they experience constantly heavy traffic on their Web sites. Multiplexing traffic amongst several servers permits better site availability. Load balancing therefore distributes traffic efficiently among network servers so that no individual server is overburdened.
In the early days of the technology, many load balancing solutions where implemented through customized domain name server configurations. This approach called “DNS round robin,” rotated incoming requests from Web browsers to multiple Web servers. The result was that all requests to the particular Web site were evenly distributed among all of the machines in the cluster.
The advantage of this system was that it was inexpensive, as a system administrator only needed to make a few changes in order to implement it. Its major disadvantages however was that DNS round robin did not support server affinity or high availability.
Server affinity is a load-balancing system's ability to manage a user's requests, either to a specific server or any server, depending on whether session information is maintained on the server or at an underlying, database level. Without server affinity, DNS round robin could not by itself exercise control over incoming traffic without the aid of cookies, hidden fields or URL rewriting.
Due to its very nature of not being able to exercise this type of control, DNS round robin could not natively handle browser caching, since incoming requests were randomized. DNS round robin also had tremendous difficulties dealing with high availability, since the DNS system requires a large amount of time of propagate information and cache it throughout the network. As a result, DNS round robin is a more antiquated approach toward managing server load. Load balancing, however, is much more sophisticated today, because it is mainly implemented through appliances such as smart switches.
Hardware load balancers solve many of the problems faced by the round robin software solution through virtual server addressing. A load balancer shows a single, virtual server address to the outside world, which maps to the addresses of each server within the cluster. When a request comes to the load balancer, it rewrites the request's header to point to other machines in the cluster. If a machine is removed from the cluster, the request does not run the risk of hitting a dead server, since all of the machines in the cluster appear to have the same IP address. This address remains the same even if a node in the cluster is down. Moreover, cached DNS entries around the Internet are not a problem. When a response is returned, the client sees it coming from the hardware load balancer machine. In other words, the client is dealing with a single machine, the hardware load balancer.
Because one machine is dealing with the management of an entire cluster, server affinity and high availability is actually integrated into the hardware load balancer solution. Indeed, with the hardware solution, a service provider can offer fail-over services, cluster management, traffic routing and geographic load balancing across multiple sites and points of presence.
Hardware also is a much faster traffic routing solution because it is solid-state device that more efficiently processes requests than software on a server deployment can
Link load balancing is a key element in the overall network Intrusion Prevention effort. Expert Link Load Balancing guards the network against internal and external attacks such as viruses, worms, Trojans, anti-scanning and protocol anomalies. Above all hovers the ultimate link load balancing challenge and network threat – DOS - Denial of Service.
http://www.1articleworld.com/Article/LOAD-BALANCING-LIGHTENS-SERVER-LOAD/49934
Internet Dial Up Access
Internet Dial-Up Data Service provides dial-up connectivity through your personal PC to another computer, a remote LAN (e.g., a corporate network), or an Internet Service Provider (ISP). Congratulations for choosing Dial Up Internet Connection Service as your gateway to the Internet! Dial-Up Data Service functions in much the same way. Set up and configure a dial-up networking connection. If Dial-Up Networking is not installed on your computer, please refer to the user manual provided with your operating system and follow the instructions for installing Dial-Up Networking. Dial Up Internet access is a type of Internet connectivity that operates through a standard telephone line. Dial Up connection is not expensive but also is the slowest type of Internet access. Both wire Dial Up and DSL provide a 24/7 Internet connection, allowing for users to leave the computer actively connected to the Internet 24 hours a day. These services are more than 30x faster than Dial Up, however, they are also more expensive. Exceptions might be dial-up services that charge more than 15-20 USD per month. Dial Up discount Internet Service Provider - if low cost is what you need, we've got it. Configure Dial-Up Networking – Windows XP or Vista In order to use your Internet Dial Up Service handset for dial-up networking, you need to create a new dial-up networking connection. In the Dial-Up Networking window, you can modify an existing connection type or create a new connection type. Unless you are comfortable using the dial-up networking options, we recommend that you create a new connection type for Dial-Up Data. To Create a New Connection Type: There are two possible sequences of windows that could arise depending on whether or not the New Phonebook Entry Wizard has previously been disabled. The following instructions assume that the wizard is not used. Dial Up Service Veriuni offers short courses in remote Dial-Up. These are short sessions that detail how to set up your home computer to access the campus network and the Internet. During these sessions, we will answer any remote connection questions that you may have. Please, check the Veriuni Dial Up Service Training Schedule for dates and times that courses are offered.WAM accounts can also be established at these training sessions. If your needs exceeds those provided by campus, please consult The List, a nationwide listing of Internet Service Providers. Dial Up Internet access is offered through a number of Internet service providers.Most ISPs lease a set of telephone numbers, sometimes local, sometimes national, that dial into network pipelines that feed into the Internet. Subscribers to the ISP normally pay a monthly or yearly fee. Please be sure to click on the highlighted hypertext links to view the additional explanations and infos.
http://www.1articleworld.com/Article/Internet-Dial-Up-Access/112997
http://www.1articleworld.com/Article/Internet-Dial-Up-Access/112997
ABCs Of Dial-up Connection
Despite the broadband connection is gradually becoming the most availed way to have Internet set-up, still Dial-up access of Internet has not lost the charm. Still being used in large areas of the world, Dial-up Internet setting is very popular form of Internet access. Dial-up connection works on a simple apparatus that it receives the Internet connection via telephone lines. If you are the user, you have to get a modem which is connected to your computer and a telephone, which helps you to dial into Internet Service Provider's node. Modem-to-modem link is established, which finally yields the Internet facility.
Today broadband Internet connections have become more popular than Dial-up connection due to its faster speed and easy availability. But still there are several places located far from the urban mainlands where still broadband network is not available. In this way, dial-up Internet setting is the only and best way to avail Internet facility. Many users choose this facility due to the fact that dial-up Internet setting provides an opportunity to avail Internet facility at nominal charge.
The connection you avail through dial-up setting, the speed will usually be 56kbit/s, which allows you to get transfer and download facility at slower speed. There are several Internet service providers which give you even free facility of availing Dial-up connection. For ISDN and modem users, availing this facility is of great use. Some of them don't even demand you the monthly charge. The only cost you bear is for dial-up call charges that makes altogether a thin monthly bill. The call cost is charged under pay-as-you-go scheme, which puts no hassle for you to pay off. Even some of these Internet provider companies will give you access to 24 hour customer support.
http://www.1articleworld.com/Article/ABCs-Of--Dial-up-Connection/123518
Today broadband Internet connections have become more popular than Dial-up connection due to its faster speed and easy availability. But still there are several places located far from the urban mainlands where still broadband network is not available. In this way, dial-up Internet setting is the only and best way to avail Internet facility. Many users choose this facility due to the fact that dial-up Internet setting provides an opportunity to avail Internet facility at nominal charge.
The connection you avail through dial-up setting, the speed will usually be 56kbit/s, which allows you to get transfer and download facility at slower speed. There are several Internet service providers which give you even free facility of availing Dial-up connection. For ISDN and modem users, availing this facility is of great use. Some of them don't even demand you the monthly charge. The only cost you bear is for dial-up call charges that makes altogether a thin monthly bill. The call cost is charged under pay-as-you-go scheme, which puts no hassle for you to pay off. Even some of these Internet provider companies will give you access to 24 hour customer support.
http://www.1articleworld.com/Article/ABCs-Of--Dial-up-Connection/123518
Internet Marketing Services Serves as a Guide to Web Promotion
The basic objective of internet marketing is to provide information of entrepreneur’s business activities and services and increase the number of viewers and visitors on the website. Internet marketing services include the SEO services, website marketing, website promotion consultation, website reviews, search engine optimization and web analytics. Promoting a website through advertisements, on search engines, other web sites is one of the main feature of internet marketing. This also includes search engine marketing, selection of keywords, periodical viewing and copywriting.
Internet marketing has been looked as an essential tool for an entrepreneur to expand his market worldwide. This includes product promotion; business and product offerings increase the brand awareness and return on investment.
The main objective of internet marketing is to provide the information regarding entrepreneur’s business activities and services with the aim of enhancing the visitors on the website. The other services in the scope of internet marketing are web marketing, web promotion, website designing, logo designing and search engine optimization. Website promotion with advertisement on other sites and search engines is another area of internet marketing. Further all such activities covers search engine marketing, selection of keyword and consulting and analytical reviewing of website.
Internet Marketing can be looked as a necessary tool for an entrepreneur to enhance his market in the shortest time. It includes business and product offerings and offers expert advice to promote products, increase the investment advertising return, brand the business and increase brand awareness for marketing of products and services. So, Internet marketing services generally include website marketing, article marketing, links management, ppc advertisement, email marketing, search engine marketing and online advertising.
Thus internet marketing covers all aspects of online marketing with complete analysis to provide valuable service to clients. The services include blogging, article submission, RSS Feeds, Forum Discussions to increase popularity of your website. These services should be framed to present your website as attractive, meaningful as well as unique and different from others. Other major target of these services is to keep track of your business.
There are other services termed as client focused marketing services which give emphasis to performance optimization, decrease the online costs, increase the revenue and make assessment of life time value of each customer. These are termed as web analytics services. When the online visibility of websites starts appearing in the World Wide Web, internet marketing can make this online presence more powerful that that you can reach out to highly targeted customers in an effective manner.
http://www.1articleworld.com/Article/Internet-Marketing-Services-Serves-as-a-Guide-to-Web-Promotion/133736
Internet marketing has been looked as an essential tool for an entrepreneur to expand his market worldwide. This includes product promotion; business and product offerings increase the brand awareness and return on investment.
The main objective of internet marketing is to provide the information regarding entrepreneur’s business activities and services with the aim of enhancing the visitors on the website. The other services in the scope of internet marketing are web marketing, web promotion, website designing, logo designing and search engine optimization. Website promotion with advertisement on other sites and search engines is another area of internet marketing. Further all such activities covers search engine marketing, selection of keyword and consulting and analytical reviewing of website.
Internet Marketing can be looked as a necessary tool for an entrepreneur to enhance his market in the shortest time. It includes business and product offerings and offers expert advice to promote products, increase the investment advertising return, brand the business and increase brand awareness for marketing of products and services. So, Internet marketing services generally include website marketing, article marketing, links management, ppc advertisement, email marketing, search engine marketing and online advertising.
Thus internet marketing covers all aspects of online marketing with complete analysis to provide valuable service to clients. The services include blogging, article submission, RSS Feeds, Forum Discussions to increase popularity of your website. These services should be framed to present your website as attractive, meaningful as well as unique and different from others. Other major target of these services is to keep track of your business.
There are other services termed as client focused marketing services which give emphasis to performance optimization, decrease the online costs, increase the revenue and make assessment of life time value of each customer. These are termed as web analytics services. When the online visibility of websites starts appearing in the World Wide Web, internet marketing can make this online presence more powerful that that you can reach out to highly targeted customers in an effective manner.
http://www.1articleworld.com/Article/Internet-Marketing-Services-Serves-as-a-Guide-to-Web-Promotion/133736
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