CEH

282 Chapter 11 ■ Denial of Service

15. What command-line utility can you use to craft custom packets with specific flags set?
    A. nmap
    B. Zenmap
    C. Ping
    D. hping3


16. What protocol is used to carry out a fraggle attack?
    A. IPX
    B. TCP
    C. UDP
    D. ICMP


17. What is the key difference between a smurf and a fraggle attack?
    A. TCP vs. UDP
    B. TCP vs. ICP
    C. UDP vs. ICMP
    D. TCP vs. ICMP


18. What is the main difference between DoS and DDoS?
    A. Scale of attack
    B. Number of attackers
    C. Goal of the attack
    D. Protocols in use


19. What is the most common sign of a DoS attack?
    A. Weird messages
    B. Rebooting of a system
    C. Slow performance
    D. Stolen credentials


20. What response is missing in a SYN flood attack?
    A. ACK
    B. SYN
    C. SY N-ACK
    D. URG