Abhijith KM

     Pendrive, SD Cards or Flash drives are very common device to transfer data from one computer to another, also sometimes we get errors while connecting Pendrive to Computer and during data transfer one of them is Shortcut Error, basically, this is a Virus known as Shortcut virus, it converts every file into shortcut in Pendrive / Hard drive, this article will guide you to remove shortcut virus from your flash drive as well as computer. What is Shortcut Virus and How does it Spread. When we connect a flash drive to an infected computer and transfer any file it automatically infect Pendrive and all files shown as Shortcut. This virus can affect any external storage like Flash Drives, External Hard disk, Phone Memory, Memory card or any Memory Stick, this is an anonymous malware which initially released online and spreading from one computer to another and we got Shortcut of files which are in USB drive if you try to open any file you will get error message. You Can See How

         First of all what are those damn blue ticks???     Well in recent update by facebook they introduced this feature.It means a person (receptor) has seen your message. Now some you don’t want that other person to know you read their message and still don’t reply.Before this feature you could have just lied stating you have not seen the message.But now you simply can’t. For such people you can follow this simple trick to disable blue ticks. 1)Switch off your data connection (or wifi) 2)Read all of your messages. 3)Close Whatsapp application 4)Switch on you data connections(if you want.) Congratulations! you have successfully read messages without letting them know.You can also use this tiny trick if you don’t want to update your last seen to current time. However some say that whatsapp is going to introduce blue tick on/off button in next update…so stay updated

Introduction               The network simulator is discrete event packet level simulator.The network simulator covers a very large number of application of different kind of protocols of different network types consisting of different network elements and traffic models.Network simulator is a package of tools that simulates behavior of networks such as creating network topologies, log events that happen under any load,analyze the events and understand the network.  Basics of Tcl Programming (w.r.t. ns2)    Before we get into the program we should consider the following things:       Initialization and termination aspects of network simulator.       Defining the network nodes,links,queues and topology as well.        Defining the agents and their applications       Network Animator(NAM)     Tracing Initialization To start a new simulator we write 1           set   ns [new Simulator]     From the above command we get that a variable ns is bein