CYB125 - Ch8

What is not a typical sign of virus activity on a system?

• Unexplained decrease in available disk space

• Unexpected error messages

• Unexpected power failures

• Sudden sluggishness of applications

Which type of virus targets computer hardware and software startup functions?

• Hardware infector

• System infector

• File infector

• Data infector

Alison is a security professional. A user reports that, after opening an email attachment, every document he saves is in a template format and other Microsoft Word documents will not open. After investigating the issue, Alison determines that the user's Microsoft Office normal.dot template has been damaged, as well as many Word files. What type of virus is the most likely cause?

• Polymorphic virus

• Retro virus

• Cross-platform virus

• Macro virus

What file type is least likely to be impacted by a file infector virus?

• .exe

• .docx

• .com

• .dll

Arturo discovers a virus on his system that resides only in the computer's memory and not in a file. What type of virus has he discovered?

• Slow virus

• Retro virus

• Cross-platform virus

• Multipartite virus

Which of the following was one of the first ransomware programs that generally alerts users to restrictions and demands a payment to restore full access?

• BitLocker

• CryptoLocker

• FileVault

• CryptoVault

Lin installed a time-management utility that she downloaded from the Internet. Now several applications are not responding to normal commands. What type of malware did she likely encounter?

• Virus

• Worm

• Ransomware

• Trojan horse

Bob is developing a web application that depends on a backend database. What type of attack could a malicious individual use to send commands through his web application to the database?

• Cross-site scripting (XSS)

• Extensible Markup Language (XML) injection

• Structured Query Language (SQL) injection

• Lightweight Directory Access Protocol (LDAP) injection

Larry recently viewed an auction listing on a website. As a result, his computer executed code that popped up a window that asked for his password. What type of attack has Larry likely encountered?

• Structured Query Language (SQL) injection

• Command injection

• Extensible Markup Language (XML) injection

• Cross-site scripting (XSS)

Yolanda would like to prevent attackers from using her network as a relay point for a smurf attack. What protocol should she filter?

• Hypertext Transfer Protocol (HTTP)

• Transmission Control Protocol (TCP)

• Internet Control Message Protocol (ICMP)

• User Datagram Protocol (UDP)