only true or false with justification

9. Only ICMP protocol is subjected to DoS attacks Justification: 10. Reflection is an attack where an attacker sends packet to a server or many servers with masqueraded source addresses to jammed network links Justification: 11. Misfeasor is an individual, likely an outsider, not authorized to use the computer and who penetrates a system's access controls to exploit a legitimate user's account Justification: 12. Host-based DS monitors single device activity 13. A firewall is inserted between the premises network and the Internet to detect intrusion outside network perimeter Justification: 14. Personal firewall is one type of commercial firewalls to prevent attacks Justification: 15. IT security policy must be independent from senior management Justification