Category: Internet

Email or Electronic Mail.

One of the most relevant applications that has brought with it the use of the Internet, is the facilitate the communication between two people via email. No matter how distant are with each other, the use of this tool enables the approach and the exchange of information almost instantaneously.

Any person can have free access to an email account from which to communicate with the outside world. This is the better way to send and receive correspondence, photos, music, and, in general, any information that can digitize.

Businesses, public institutions, banks, public services dependencies, in short, all potential senders of information have adopted this environment as one of the first options of communication. This, in addition to reducing costs in mail, paper, stamps, and time, has brought with it the goodness to the environment. Thousands of tonnes of paper replaced by digital files which are more easy to organize, store and locate. And at the same time reduce the depletion of the source of such paper that are the trees of our planet.

The structure of the e-mail addresses is:

username@mailserver

where the user name is unique for each server, i.e., if the name you choose is already used by someone, must choose another that is available. The symbol @ (“at” in English), and then the domain of the server. For example, in the case of Google is gmail.com.

What can I do with the Email?

In general, all programs used for E-mail offer the following facilities:

• Sending to multiple recipients
• Creation of list of contacts
• Shipments with Visible copy (CC) and blind carbon copy (CO)
• Ease of forwarding to third parties
• Ease of direct response
• Creation of folders for classification to preference of the user
• Printing options
• Email SPAM filtering (junk mail or advertising)

There are a lot of free mail servers, in addition to those relating to each domain or company, but Internet and its communication protocols have facilitated the link of all of them. Most popular free email servers are:

• Gmail
• Hotmail
• Yahoo
• AOL

Opening an Email account is easy and fast and you only need to follow the instructions of the mail server. Is funny, is necessary and is very friendly with the environment.

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Search Engines.

Often want to enter to the Internet in search of any information specified and we don’t have any address of the pages they may offer it to us. No matter if you are looking for technical information, news, music, recipes, in order, as we usually say the frequent visitors of the Internet, everything is on the net!, and we have our friends: the Search Engines.

This claim is not an exaggeration, either for reasons of commercial, educational, institutional, or simply for the interest to publicize to the world a view, or the result of a job or hobby, etc., Internet, thanks to its popularity, has become the main means of communication of that information that mankind has.

For the current date, it is estimated more than 1100 million Web sites, although not all are active. At the same time, the number of users on the network, either as source of information, entertainment, etc., is estimated at more than 3200 million users.

Due to this enormous quantity of content, the only way to access the information that’s on the Web, when we don’t have a default address of the pages containing it, is through Search Engines.

Though all Search Engines have diversified by adding many other functions to their pages, its main function meet it through a box that allows you to place a text associated with which we want to locate.

Then the Search Engine would take as a reference to provide us a list of sites where we can find information linked to our search.

In general, this list includes fragments of Web sites where it was found the term searched, and in each one, a Link that gives access to that site.

While there are search engines specialized in search types specified (news, videos, tourism, etc.), the most widely used search engines are commonly used. The most important of these search engines, are:

• Google
• Bing
• Yahoo

The difference, in terms of quality of the search, from one to another engine, is given by the relevance of each search engine gives to Web pages that contain the term to search for.

Although it is matter of preference to use one or the other, Google is, by far, the most widely used, opinion personally I share.

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Web Browsers.

The Web browsers are programs that we use to access Web sites that are on the Internet. Its main function is to “interpret” the content HTML (coding that transmitted the files of Web pages) and translate them into what we actually see on our computer screen. Most of them have the following characteristics:

• Have a window called “of address or navigation” where is placed the address or name of the page you want to access.
• They have a format of multiple “tabs” to be able to access some pages keeping others opened or accessed.
• Allow to do impressions of the content of the page that we are displayed.
• They allow doing a directory of Web sites that we mark as favorite or Favorites.
• They define a Web page as home page, i.e., the initial page that we will connect to the network.

Although there are some browsers that are capable of “search” Web pages with simplified identifications, the most usual is that we place, in the address box, the full generic name which is of the form:

http://www.nameofthepage.typeofdomain

As the reader can see, we have placed .typeofdomain and not the usual .com, what we have done to call attention to the term domain.

The domain under which a website is hosted is nothing more than the name, which must be unique, and is used as a term “manageable by humans” to find such website.

The adoption of names and extensions was made to replace the IP address due to the cumbersome for people, since it is composed of a series of up to 12 digits in groups of 3 separated by a dot (we will see later).

In the case of extensions, the intention was to identify the type of page according to its use. So that com corresponded to commercial, org institutional organizations, edu educational sites, etc.

Today, that classification is not a 100% reliable indicator since many domain names that the owners wanted to use, were already busy for an extension, so using your domain name with another than if it were available.

As the reader can guess, we want to clarify is that, except that the owner of the site has “bought” his domain with all extensions, the search with the web browsers of the site : http://www.dogs should most likely us directing to a page other than http://www.dogs.net.

We also want to let you know that thanks to international agreements, and guidelines issued by the institutions to govern the operation of the Internet, there are also domain extensions with geographic allocation, which is in the end with two letters assigned to each country. For example VE to Venezuela, ES for Spain. UK for the United Kingdom, etc..

The international institutions that govern the operation of Internet with regard to domains, are the IANA (Internet Assigned Numbers Authority), and ICANN.

It is the Internet Corporation for assigned names and numbers of domains (Internet Corporation for Assigned Names and Numbers) which is a nonprofit that operates at level of assigning numerical address under the Internet Protocol (IP).

To close the topic relative to browsers want to indicate that they are among the most important web browsers:

• Internet Explorer
• Chrome
• Firefox
• Safari
• Opera

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Internet. What it is?

It is not a secret that most of the technologies developed by man, which we enjoy today, had its origins in the studies and research that many countries were at some point in the middle of the fight for military supremacy. Internet is no exception to this rule.

It all began in 1962, with a project sponsored by the United States Department of Defense in conjunction with the University of California, Los Angeles, in which was established the initial network of the project. It was baptized with the name of Arpanet (Advanced Research Projects Agency Network), i.e., the network of the Agency’s projects of advanced research.

It was not until 1981 that one of the teams of the project initiation the term Internet, on the basis of the Interconnected Networks expression.

In 1989 the Arpanet project was replaced and liberate for commercial use the concept of interconnected networks that, with the birth in 1990 of the WWW or World Wide Web (global computer network), gave way to what we know today as the Internet:

A network that interconnects millions of networks around the world, and by which flow, in all senses, packets of Digital information with content that is interpreted and put into “readable” form by the browsers of all computers connected to this Network of Networks.

Once understood this very simplified history and definition of Internet, delving into its operation and its possibilities of use.

Some terms that you should be familiar.

There are many expressions and acronyms that are commonly used in knowledgeable people in the middle and that at some point you could find when this “living” with the world of Internet, if it is that it is no longer so. Then place the most commonly used and their meaning:

Http: It is the abbreviation for Hypertext Transfer Protocol. It is not more than as agreed at the global level to make the transfer of information over the Internet. This communication standard is unique and its variant Https means that it is done in an environment with encryption which makes it more secure.

IP address: refers to the direction that has each computer connected to the Internet. Is formed by the term IP (stands for Internet Protocol) and a number of the form XXX.XXX.XXX.XXX, e.g.: IP 192.168.255.255. IP addresses are one for each user and only change when the networks are structured with dynamic addressing.

DSL: It is the abbreviation of Digital Suscriber Line and is used to identify one of the systems of access to most used Internet, which is through the same line that is used for phones.

URL: It is the abbreviation of Uniform Resource Locator and was named to the string that makes up a Web address. That is, the name that accessed the Web page.

WWW: It is the abbreviation for World Wide Web and define the environment in which the Network of Networks is handled: Internet.

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