Summary

26 IT Essentials: PC Harware and Software Companion GuideCheck Your UnderstandingYou can find the answers to these questions in the appendix, “Answers to Check YourUnderstanding Questions.”1. Which of the following is a software program that displays advertising on your computer?A. AdwareB. SpywareC. GraywareD. Virus2. Which of the following uses the network to duplicate its code to the hosts on a network,often without any user intervention?A. AdwareB. SpywareC. VirusD. Worm3. Which of the following is technically a worm and is a threat that is hidden in softwarethat appears to do one thing, but does another?A. VirusB. SpywareC. AdwareD. Trojan4. Which of the following is a form of attack that prevents users from accessing normalservices, such as e-mail or web server?A. Ping of deathB. Denial of serviceC. E-mail bombD. Distributed denial of service5. Which of the following is an encryption system that protects data as if it is on a privatenetwork, even though the data is actually traveling over the Internet or other unsecuredpublic networks?A. Data encryptionB. Port protectionC. Virtual private networkD. File system security