312-49 · Question #694
Which of the following is a precomputed table containing word lists like dictionary files and brute force lists and their hash values?
The correct answer is B. Rainbow Table. A Rainbow Table is a precomputed lookup table that maps plaintext passwords (from dictionary files, brute force lists, or other wordlists) to their corresponding cryptographic hash values. Instead of hashing passwords on the fly during an attack, an attacker uses the precomputed
Question
Which of the following is a precomputed table containing word lists like dictionary files and brute force lists and their hash values?
Options
- ADirectory Table
- BRainbow Table
- CMaster file Table (MFT)
- DPartition Table
How the community answered
(27 responses)- A4% (1)
- B93% (25)
- D4% (1)
Explanation
A Rainbow Table is a precomputed lookup table that maps plaintext passwords (from dictionary files, brute force lists, or other wordlists) to their corresponding cryptographic hash values. Instead of hashing passwords on the fly during an attack, an attacker uses the precomputed table to instantly look up which plaintext corresponds to a captured hash - dramatically speeding up password cracking. Rainbow tables are defeated by salting hashes, which ensures the same password produces a different hash each time. The other options are unrelated: Directory Table and Partition Table are disk structure concepts, and MFT (Master File Table) is an NTFS file system index.
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