Certified Ethical Hacker (CEH v11) — Question 132

Henry is a cyber security specialist hired by BlackEye `" Cyber Security Solutions. He was tasked with discovering the operating system (OS) of a host. He used the Unicornscan tool to discover the OS of the target system. As a result, he obtained a TTL value, which indicates that the target system is running a Windows
OS.
Identify the TTL value Henry obtained, which indicates that the target OS is Windows.

Answer options

• A. 128
• B. 255
• C. 64
• D. 138

Correct answer: A

Explanation

A TTL value of 128 is commonly associated with Windows operating systems, indicating that the target is likely running Windows. The other values, such as 255 and 64, are typically linked to different operating systems like Linux and Unix, respectively, making them incorrect for identifying a Windows OS.