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MY PRACTICE ZONE, , A. 1., , Ch- 10, , rf ©, , a., , » 2 2 op oO, , Malware b. Computer Security c. Polymorphic d. Antivirus, Spyware f. Master Boot Record g. Window Defender, , True b. False c. False d. True, False f. True, , iv b. ii c. ii d. iv e. iv, , ill b. iv c. vi d. i e. ii f. v, , A computer virus is an unwanted malicious program designed to cause damage to computers, on a large scale., , 1. There is a decrease in the speed of the computer., , 2. There is unexplained crashing of the hard disk., , When the computer virus starts working, it is called the activation of virus., Malware: Trojan ,worms and spyware., , An email may contain an infected file attachment. Virus can spread if the user opens and, downloads an infected email attachment., , When the Antivirus program is updated, its database of the existing virus is updated with the, code and the name of the new viruses. This helps the Antivirus software to be up-to-date and, keeps our computer safe and protected from any malicious software., , Quarantined Files are those files which are suspected to be infected and might be a threat to, the system., , Trojan makes changes to the computer settings., , Worms: It uses up our computer hard disk space by replicating itself and or slows down the, data transmission on the internet due to consumption of the bandwidth., , Spyware: It tracks our activity on the Internet and transmits that information in the background, to someone else., , A computer virus spreads through:, , 1. Infected Flash Drives or Disks: A virus can also be copied from one computer to other, when the user copies infected files using flash drives., , 2. Email Attachments: An email may contain an infected file attachment. Virus can spread, if the user opens and downloads an infected email attachment., , 3. Networks: Virus can spread to other computers if an infected computer is connected to, a network., , 1. Boot Sector Virus: The Boot Sector is a part of our computer that gets accessed first when, we switch it on., , 2. File Deleting Virus: A File Deleting Virus is designed to delete important files which are, the part of Operating System or data files., , 3. Macro virus: Macro viruses are written by using the Macro programming languages to, specifically infect data files like documents, spread sheets, presentations, etc.