What is a Web Server?

Learn Web server software overview, how to configure, how it works, apache, tomcat. Web server is a computer including a software package that provides the specific services to the client computers. Web server delivers the web pages. Every web server has an IP address and a domain name. If you sends a request through your browser for this website http://www.networktutorials.info, the request goes to the server whose domain name is networktutorials.info.

The server fetches the index or main page of the website and sends it to your browser. Web-based servers are used for hosting the websites. One web server can hosts thousands for one sites. But in the hosting companies there are number of the web servers for load balancing and sharing the other services.

A computer can be act as a web server by installing and configuring the server software and connecting the computer to the Internet. Normally, web server computers have to be turn on (online) for almost all the day.

What is a FTP?

You will learn here about FTP sites Introduction, File Transfer Protocol guide, http, https, secure sites, active mode, passive mode communication and encryption methods. FTP (File transfer protocol is a most secure way to transfer the files over the internet. The most common and simple use of the FTP is to download the files from the internet. All internet users, by this way or other use the FTP whether they know it or not. FTP is acts as the backbone of the music, games, files, movies, images and other documents download.

When you are downloading a file or data in the form of the docs or any other format, you are actually transferring the file to your computer from another computer over the Internet. You can also know the exact physical location of the serves from where you are downloading the files but you normally know the web addresses of the ftp or http websites.

A computer that gives ftp access establishes a FTP connection. A computer that is served to host the websites is known as web server similarly a computer that establish a ftp connection known as ftp server or it is also called a ftp site.
FTP site is like a large filing cabinet. As the files are properly organized in the filing cabinet and a proper name and label can be placed on the files just like same ftp files are also properly organized and named on the ftp server.

To connect to the ftp sites three things are required ftp server ip address or host name, user id and password. By providing these three things a user can be connected to the ftp sites and can download or upload the files. The administrator of the FTP sites controls the levels of the access like read only, write or full control.


When you download anything from the Internet, you are anonymously connected to the FTP with a anonymous user id. To make a FTP connection you have to use a web browser or a FTP client software like cuteftp, wsftp or aceftp. AceFTP can be get as free.

If you want to transfer the large files then you have to use the FTP clients because web browsers are not recommended to use in this scenario. If your work is of secure name like medical transcription data or any other thing then you should use the secure FTP connections with the capabilities of 64-bit SSL encryption methods. Many FTP clients have the resume features, which mean if you data is not properly uploaded or downloaded due to any reason then you can resume the connection from where it was broken. You don’t need to start the transfer again from the beginning.

Networking Tutorials Overview

Find computer network tutorials, wireless communication guide, LAN/WAN guide, local area network tools, wan introduction, osi layers model and many other advance topics of data communication. This is very informative site for the IT people specially in the field of computer networking. You will also find data communication overview, tech guides , data communication related information, topologies, tech study guide, Router Labs, IT certifications, Ethernet guide, free IT resources, ip addressing tools, telecommunication guide and many other informative resources. Data communication is a process of sharing data and shared resources between two or more connected computers. The shared resources can include printer, Fax modem, Hard disk, CD/DVD Rom, Database and the data files.

A computer network can be divided into a small segments called Local Area Network (LAN), networking between computers in a building of a office, medium sized networks (MAN), communication between two offices in a city and wide area networks (WAN) networking between the computers, one is locally placed and the other can be thousands of miles away in another city or another country in the world.

Business networking

Business networking is the process of establishing a mutually beneficial relationship with other business people and potential clients and/or customers.

Notice that I don't say anything about meeting people in this definition; the ever-increasing slew of business networking meet-and-greet events have given business networking a bad name.

The key to true business networking is the establishment of a mutally beneficial relationship, and that's an incredibly rare event at the standard shake-hands-and-exchange-your-business-card events that are touted as business networking "opportunities".

The purpose of business networking is to increase business revenue - one way or another. The thickening of the bottom line can be immediately apparent, as in developing a relationship with a new client, or develop over time, as in learning a new business skill.

The best business networking groups operate as exchanges of business information, ideas, and support. The most important skill for effective business networking is listening; focusing on how you can help the person you are listening to rather than on how he or she can help you is the first step to establishing a mutally beneficial relationship.

Networking Definition

We define social network sites as web-based services that allow individuals to (1) construct a public or semi-public profile within a bounded system, (2) articulate a list of other users with whom they share a connection, and (3) view and traverse their list of connections and those made by others within the system. The nature and nomenclature of these connections may vary from site to site.

While we use the term "social network site" to describe this phenomenon, the term "social networking sites" also appears in public discourse, and the two terms are often used interchangeably. We chose not to employ the term "networking" for two reasons: emphasis and scope. "Networking" emphasizes relationship initiation, often between strangers. While networking is possible on these sites, it is not the primary practice on many of them, nor is it what differentiates them from other forms of computer-mediated communication (CMC).

What makes social network sites unique is not that they allow individuals to meet strangers, but rather that they enable users to articulate and make visible their social networks. This can result in connections between individuals that would not otherwise be made, but that is often not the goal, and these meetings are frequently between "latent ties" (Haythornthwaite, 2005) who share some offline connection. On many of the large SNSs, participants are not necessarily "networking" or looking to meet new people; instead, they are primarily communicating with people who are already a part of their extended social network. To emphasize this articulated social network as a critical organizing feature of these sites, we label them "social network sites."

While SNSs have implemented a wide variety of technical features, their backbone consists of visible profiles that display an articulated list of Friends¹ who are also users of the system. Profiles are unique pages where one can "type oneself into being" (Sundén, 2003, p. 3). After joining an SNS, an individual is asked to fill out forms containing a series of questions. The profile is generated using the answers to these questions, which typically include descriptors such as age, location, interests, and an "about me" section. Most sites also encourage users to upload a profile photo. Some sites allow users to enhance their profiles by adding multimedia content or modifying their profile's look and feel. Others, such as Facebook, allow users to add modules ("Applications") that enhance their profile.

The visibility of a profile varies by site and according to user discretion. By default, profiles on Friendster and Tribe.net are crawled by search engines, making them visible to anyone, regardless of whether or not the viewer has an account. Alternatively, LinkedIn controls what a viewer may see based on whether she or he has a paid account. Sites like MySpace allow users to choose whether they want their profile to be public or "Friends only." Facebook takes a different approach—by default, users who are part of the same "network" can view each other's profiles, unless a profile owner has decided to deny permission to those in their network. Structural variations around visibility and access are one of the primary ways that SNSs differentiate themselves from each other.

Types of Networks

LANs (Local Area Networks)

A network is any collection of independent computers that communicate with one another over a shared network medium. LANs are networks usually confined to a geographic area, such as a single building or a college campus. LANs can be small, linking as few as three computers, but often link hundreds of computers used by thousands of people. The development of standard networking protocols and media has resulted in worldwide proliferation of LANs throughout business and educational organizations.

WANs (Wide Area Networks)

Wide area networking combines multiple LANs that are geographically separate. This is accomplished by connecting the different LANs using services such as dedicated leased phone lines, dial-up phone lines (both synchronous and asynchronous), satellite links, and data packet carrier services. Wide area networking can be as simple as a modem and remote access server for employees to dial into, or it can be as complex as hundreds of branch offices globally linked using special routing protocols and filters to minimize the expense of sending data sent over vast distances.

LANs (Local Area Networks)

A network is any collection of independent computers that communicate with one another over a shared network medium. LANs are networks usually confined to a geographic area, such as a single building or a college campus. LANs can be small, linking as few as three computers, but often link hundreds of computers used by thousands of people. The development of standard networking protocols and media has resulted in worldwide proliferation of LANs throughout business and educational organizations.

WANs (Wide Area Networks)

Wide area networking combines multiple LANs that are geographically separate. This is accomplished by connecting the different LANs using services such as dedicated leased phone lines, dial-up phone lines (both synchronous and asynchronous), satellite links, and data packet carrier services. Wide area networking can be as simple as a modem and remote access server for employees to dial into, or it can be as complex as hundreds of branch offices globally linked using special routing protocols and filters to minimize the expense of sending data sent over vast distances.

What is a computer Network?

A network is any collection of independent computers that communicate with one another over a shared network medium.A computer network is a collection of two or more connected computers. When these computers are joined in a network, people can share files and peripherals such as modems, printers, tape backup drives, or CD-ROM drives. When networks at multiple locations are connected using services available from phone companies, people can send e-mail, share links to the global Internet, or conduct videoconferences in real time with other remote users. As companies rely on applications like electronic mail and database management for core business operations, computer networking becomes increasingly more important.

Every network includes:

* At least two computers Server or Client workstation.
* Networking Interface Card’s (NIC)
* A connection medium, usually a wire or cable, although wireless communication between networked computers and peripherals is also possible.
* Network Operating system software, such as Microsoft Windows NT or 2000, Novell NetWare, Unix and Linux.

Basic Computer Network

Introduction

A network is a group of things that are connected together. In a computer network, the things that are connected are computers, of course. A computer network can be as small as two computers but there is no maximum size, and many networks have hundreds or thousands of computers.

There are three main reasons for connecting computers in a network:

1. Share information. This can be messages such as e-mail, or it can be files that are stored on one computer and used by someone at a different computer.

2. Share resources. A printer that can be accessed from different computer systems is a shared resource. So is an Internet connection used by more than one computer.

3. Centralized control. In most offices, the management determines what the computers may be used for and what kind of resources and support they need. This is much easier to deal with if the computers are connected.

Types of Networks

Just as there is no limit to the number of systems in a network, there is also no limit to the geographical size of a network. As a practical matter though, there are some structural differences between a network of computers all in the same room, and a network connecting computers in Los Angeles to ones in Sydney Australia.

The most common network includes computers that are close together, usually in the same building or office. This is called a Local Area Network, abbreviated LAN.

The computers in a LAN are usually connected with cable made up of pairs of wires, but faster (and more expensive) cables are made from glass fibers, called fiber optic cable. A network may even use radio waves, in which case it is a wireless LAN.

When the computers being connected are far apart, typically in different cities, it is called a WAN or Wide Area Network. The connection is usually done with special high-speed lines leased from the phone company, but it is also possible to connect over an ordinary phone line using a device called a modem. It’s slow, but possible. Accessing a network through a phone line and modem is called a dial-up connection.

The biggest of all networks is the Internet. The backbone of the Internet consists of powerful computers all over the world with high-speed connections between them. Individual computers such as yours then connect to this backbone through an Internet Service Provider or ISP.