Password Protection and Encryption Techniques DFE Practice Questions (Page 10)

Questions 46–49

1. 46foundation · easy

   Which encryption algorithm is widely used for securing web traffic through TLS/SSL and is an example of asymmetric encryption?

   • ARSA
   • BAES
   • CBlowfish
   • DMD5
   Reveal Solution Discussion Select an answer first
2. 47foundation · easy

   What is the primary goal of a cold boot attack?

   • ATo recover encryption keys from RAM after the system has been powered off
   • BTo bypass the BIOS password by resetting the CMOS
   • CTo extract data from a hard drive by freezing it
   • DTo prevent the system from booting by corrupting the boot sector
   Reveal Solution Discussion Select an answer first
4. 48expert · hard

   A forensic examiner has a password-protected PDF file that is suspected to contain evidence. The examiner has a list of the user's known passwords and a powerful GPU. The PDF uses AES-256 encryption with a password-based key derivation function. Which approach is most likely to succeed within a reasonable time?

   • AUse a GPU-accelerated dictionary attack with the known password list and common variations
   • BPerform a brute-force attack on the AES key directly
   • CUse a rainbow table on the PDF's password hash
   • DAttempt to extract the encryption key from the PDF file's metadata
   Reveal Solution Discussion Select an answer first
5. 49application · medium

   A forensic examiner needs to crack a password-protected ZIP file. The examiner has a list of likely passwords from the user's social media posts and common corporate password patterns. Which attack method is most appropriate to try first?

   • ARule-based attack that only appends numbers to the user's name
   • BBrute-force attack trying all possible character combinations
   • CDictionary attack using the custom wordlist
   • DRainbow table attack on the ZIP file's password hash
   Reveal Solution Discussion Select an answer first