Quiz - Viruses

--- primary_color: '#1C90F3' title_color: black shuffle_questions: false shuffle_answers: true --- ## Which of the following is NOT a real computer virus? > We are looking for the Internet version of the old chain letter. 1. [ ] File viruses >Unfortunately not correct. File viruses are the "classic" form of a computer virus. They infect specific files, such as executable programs, and multiply when these program files are called. 3. [ ] Trojan horses >Unfortunately not correct. Trojan horses belong to the viruses. They are designed to infiltrate your system unnoticed, e.g. to spy out data and passwords. 4. [ ] Worms >Unfortunately not correct. Worms are also computer viruses. They reproduce themselves, spread preferentially in computer networks and try to disrupt their work. 5. [x] Hoax >**Right answer** 6. [ ] Bots >Unfortunately wrong. A bot is a real virus and "works" without your intervention. It is often remotely controlled for attacks or data espionage. ## What is a computer virus? > Computer viruses can be very dangerous. There are viruses that destroy entire systems, delete files, and spy on databases or passwords. This does not mean biological creatures, but programs or parts of programs that reproduce independently in the computer. 1. [ ] Computer viruses are annoying programs or program parts, but they are harmless. >No, unfortunately not. Computer viruses can be very dangerous. There are viruses that destroy whole systems, delete files, and spy out databases or passwords. 2. [ ] Computers can also be infected by diseases. Besides computer bacteria, there are also a large number of computer viruses. Some of them are deadly for humans. >Wrong. Computer viruses are not biological creatures, but programs or parts of programs that reproduce independently in the computer. 3. [x] Computer viruses are programs or program parts that trigger unwanted actions, often unnoticed by the user. >**Right answer** 4. [ ] Computer viruses only abuse the e-mail program to send unwanted e-mails to all addresses in your address book. >There are computer viruses that behave exactly like this. Other viruses, however, do not use the e-mail program at all, but perform other actions, such as encrypting files. ## What is the most important measure against computer viruses? > A virus scanner is never wrong ;-) 1. [ ] Regularly call the contact persons and ask for new virus messages. >Not correct. The contact persons are happy to help you with acute virus threats. However, with about a thousand new viruses every day, they would be completely overwhelmed to provide information about them. It is better to use a virus scanner! 2. [x] Install a current virus scanner, which automatically checks all used data for viruses. >**Right answer** 3. [ ] Disconnect the computer from the network and turn it off. >No. Although this measure effectively prevents viruses from getting onto your computer, it also prevents daily work! Better use a virus scanner! 4. [ ] Wear mouth-nose protection and keep distance. >Unfortunately wrong. This helps against corona viruses, but not against those in the computer. ## Why should you make backups in spite of the virus scanner? 1. [ ] Because the virus scanner must be updated by a data backup. >This is unfortunately wrong. Data backup and virus scanner have basically nothing to do with each other. But a data backup can help, if a file was encrypted by a virus. 2. [ ] Because a data backup saves the content of a file and so prevents the check by the virus scanner. >Unfortunately not correct. Data backup and virus scanner have basically nothing to do with each other. But a data backup can help if a file has been encrypted e.g. by a virus. 3. [ ] Because the virus scanner program deletes all Word and Excel files, because they can contain macro viruses. >Not correct. With a data backup, the files are copied to an external medium and stored externally, so that the data can be retrieved from there back to the computer in case of loss. The virus scanner only deletes contaminated data. 4. [x] Because no virus scanner is 100 percent safe. A virus can change a file in such a way that it can no longer be used. For this case a data backup is needed. >**Correct answer**