Over the Internet, there could be business-to-business , business-to-consumer and consumer-to-consumer communications. When money or sensitive data is exchanged, the communications are apt to be protected by some form of communications safety mechanism. Intranets and extranets could be securely superimposed onto the Internet, with none entry by general Internet customers and directors, using safe Virtual Private Network know-how. Computer networks are also used by security hackers to deploy pc viruses or pc worms on gadgets related to the network, or to stop these gadgets from accessing the network through a denial-of-service attack. Networks are sometimes managed by the organizations that…