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Certified Ethical Hacker v11 Exam (312-50v11) - EC-Council Exam Questions

Last updated on June 20, 2026

97% Exam Compliance
528 Total Questions
1
Question
What is a NULL scan?
Options
A A scan in which the packet size is set to zero
B A scan in which all flags are turned off
C A scan in which all flags are on
D A scan in which certain flags are off
E A scan with an illegal packet size
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2
Question
While performing an Nmap scan against a host, Paola determines the existence of a firewall. In an
attempt to determine whether the firewall is stateful or stateless, which of the following options would be best to use?
Options
A -sF
B -sA
C -sT
D -sX
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3
Question
You have successfully comprised a server having an IP address of 10.10.0.5. You would like to enumerate all machines in the same network quickly.

What is the best Nmap command you will use?
Options
A nmap -T4 -O 10.10.0.0/24
B nmap -T4 -q 10.10.0.0/24
C nmap -T4 -r 10.10.1.0/24
D nmap -T4 -F 10.10.0.0/24
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4
Question
Todd has been asked by the security officer to purchase a counter-based authentication system.

Which of the following best describes this type of system?
Options
A An authentication system that uses passphrases that are converted into virtual passwords.
B A biometric system that bases authentication decisions on behavioral attributes.
C An authentication system that creates one-time passwords that are encrypted with secret keys.
D A biometric system that bases authentication decisions on physical attributes.
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5
Question
DNS cache snooping is a process of determining if the specified resource address is present in the DNS cache records. It may be useful during the examination of the network to determine what software update resources are used, thus discovering what software is installed.

What command is used to determine if the entry is present in DNS cache?
Options
A dns --snoop update.antivirus.com
B nslookup -fullrecursive update.antivirus.com
C nslookup -norecursive update.antivirus.com
D dnsnooping –rt update.antivirus.com
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