ns2 installation in ubuntu complete guide

1 Introduction

Network simulators are tools used to simulate discrete events in a network and which helps to predict the behaviours of a computer network. Generally the simulated networks have entities like links, switches, hubs, applications, etc. Once the simulation model is complete, it is executed to analyse the performance. Administrators can then customize the simulator to suit their needs. Network simulators typically come with support for the most popular protocols and networks in use today, such as WLAN,UDP,TCP,IP, WAN, etc.

How to download youtube videos in just one click

Youtube is the world's largest video sharing platforn.You can watch videos anywhere ,anytime in the world but  if you like the video and want download it ,for that youtube does not provide downloading facility.
There are many ways to download the youtube videos but many of them is time taking usually involve link cut paste process .Also there are some software also available .

Block video ads on youtube by adblock

youtube is the biggest video sharing platform.youtube also used for promote videos .when you watch the video on youtube , a most of the time video ads play before video

How to increase the laptop RAM for free

Computer ,Laptop with very fast processor and huge RAM are available in the market .But these are not so much cheap so everyone can buy it.If your pc is running slow and you want to increase your RAM than you not need to be buy one.I will show you how to increase the RAM for free.

Computer allocate the some part of the hard disk as the virtual memory that is used act as the RAM when Computer needed the more RAM for running the heavy software.