Different between Intranet and Internet

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Types Of Computer Security Risks

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A computer security risk is any action that could cause a loss of or damage to computer hardware, software, data, information, or processing capability. types of security risk s ; (a) Malware :       Malware is malicious software, which are programs that act without a user’s knowledge and deliberately /purposely  alter the computer’s operations. Types of Malware : *Computer viruses :  A potentially damaging program that affects, or infects a computer or mobile device negatively by altering the way the computer or device works without the user's knowledge or permission *Worms : P rogram that copies itself repeatedly, for example in memory, using up resources and possibly shutting down the computer, device or network. * Trojan Horses : P rogram that hides within or looks like a legitimate program.  Unlike a virus or worm, a trojan horse does not replicate itself to other computers or device.  ...
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Voice Over Internet Protocol

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Voice over Internet Protocol   (also   voice over IP,   VoIP   or   IP telephony) is a methodology and group of technologies for the delivery of   voice communications   and   multimedia sessions over   Internet Protocol   (IP) networks, such as the   Internet . The terms   Internet telephony,   broadband telephony, and   broadband phone service   specifically refer to the provisioning of communications services (voice,   fax ,   SMS , voice-messaging) over the public Internet, rather than via the   public switched telephone network   (PSTN). The steps and principles involved in originating VoIP telephone calls are similar to traditional digital   telephony   and involve signaling, channel setup, digitization of the analog voice signals, and encoding. Instead of being transmitted over a   circuit-switched network , the digital information is packetized, and transmission o...
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