Certified Ethical Hacker (CEH v10) — Question 42

A hacker named Jack is trying to compromise a bank's computer system. He needs to know the operating system of that computer to launch further attacks.
What process would help him?

Answer options

• A. Banner Grabbing
• B. IDLE/IPID Scanning
• C. SSDP Scanning
• D. UDP Scanning

Correct answer: A

Explanation

Banner Grabbing is the correct answer because it allows the hacker to extract information about the service running on a port, including the operating system details. The other options, such as IDLE/IPID Scanning, SSDP Scanning, and UDP Scanning, do not specifically provide information about the operating system, making them less effective for this purpose.