Ophcrack is typically very successful at cracking Windows local machine passwords and depends on which of the following?

• A. A general password manager.
• B. Rainbow tables.
• C. A disk imaging tool.
• D. A network traffic analyzer.

Answer: (B)

Ophcrack depends on rainbow tables to crack Windows local passwords. It works by using precomputed tables that map many possible password hashes to their plaintext passwords. When you run Ophcrack, it compares the target Windows password hashes (usually NT hashes from the SAM database) against these tables and, if a match is found, reveals the corresponding password quickly. This approach trades storage space (very large tables) for speed, which is why Ophcrack can be very effective for common or shorter passwords. The other options don’t fit because a general password manager stores credentials, disk imaging tools copy drives for offline analysis, and network traffic analyzers capture data in transit—none of which are what Ophcrack uses to recover passwords.