What is Socket and PORT in Computer Network Programming

Port
   A port represents an endpoint or "channel" for network communications. Port numbers allow different applications on the same computer to utilize network resources without interfering with each other.

The purpose of ports is to differentiate multiple endpoints on a given network address. You could say that a port is a virtualised endpoint. This virtualisation makes possible multiple concurrent connections on a single network interface. 


Socket
 A socket represents a single connection between two network applications. These two applications nominally run on different computers, but sockets can also be used for interprocess communication on a single computer. Applications can create multiple sockets for communicating with each other. Sockets are bidirectional, meaning that either side of the connection is capable of both sending and receiving data. Therefore a socket can be created theoretically at any level of the OSI model from 2 upwards.

The combination of an IP address and a port is strictly known as an endpoint and is sometimes called a socket. A socket is not bound to TCP/IP, it can be any protocol

How to Add a Network printer in Ubuntu 10.04

Here I have a Network printer connected in 192.168.0.2 . It is an HP Printer.

Select System --> Administration --> Printing

Now Select Add  then Expand the Network Printer option , select Find Network Printer , then type your Print server IP and press FIND Button

 It will automaticaly detect your printer

Now it will ask for exact printer model  , select printer brand and model from Menu.

After Adding Printer You can right click on printer and make proper settings

How to Select a Linux Distibution - Simple Guide

If you are a person that caught the world attention and want to try a linux distro, but you do not know what to start, and where to start,  here I will offer a little help.

see this site
http://www.zegeniestudios.net/ldc/index.php?select_lang=true

Burn CD, DVD and Blu-Ray in Ubuntu Linux using Silicon Empire

Burn CD, DVD and Blu-Ray in Ubuntu Linux using Silicon EmpireSilicon Empire is an application for GNU / Linux that lets you record and manage optical discs such as CD, DVD and Blu-Ray. It is written in Qt, a widely used multi-platform library for developing applications with graphical user interface as well as for developing non-GUI programs as tools for the command line and console server.

Silicon Empire uses cdrtools and gives us the ability to copy or burn a data disc images, erase or mount DVDs. For the time being to create an audio CD, though (curiously) comes with a player music ( MiniTuner ) and even a picture viewer, these (as well as the characteristics of CD / DVD) are called "Sapplications" which are basically plug-ins, so you could get more of these in the future.


Features

    Record, copy and erase optical discs
    Supports CDs, DVDs and BluRays
    Show all information about disks and optical drives before starting to record / copy / delete.
    It Supports Iso,. Nrg,. Bin. Mdf and. Img
    Manager images from CD / DVD
    Support for drag and drop
    Copy all or only part of the discs

 Download deb package from here
http://getsilicon.org/download/silicon_1.7.3_amd64.deb