for example, any member of the public with internet access can request a web server in any part of the world to deliver a web page. In this context, a server hog most commonly designates a malicious server hog—a program written expressly for the purpose of overloading a remote server with excessive requests or excessively difficult requests (such as complex search). Use of a deliberate server hog is known as a denial-of-service attack, a behaviour exhibited by many viruses, worms and trojan horses. It is also possible for a petulant or vindictive computer user to manually overload a remote server by unleashing a crap flood. Bots A special case is that of a run-away bot, a program that was designed to be helpful by automating a drudgerous task, but due to poor programming or poorly understood circumstances, goes out of control and hammers a server unceasingly at a high rate. A common case is a web spider which accesses too many pages on a web server too quickly at the expense of the server's intended audience. References Scheduling (computing)