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Database Systems Exam MCQs – Practice Test 4 (Chapter 20)

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Free "Relational Database Design Learning" App Download with MCQ: In the Rijndael algorithm, the encryption key is of the length; with answers: 192 bits, 128 bits, and 256 bits. Practice Query Optimization Techniques Quiz Questions, download Kobo e-Book (Free Chapter) for database performance optimization.

Relational Database Design MCQs – Practice Test 4 PDF Download

MCQ 16: In the Rijndael algorithm, the encryption key is of the length:

  1. 128 bits
  2. 192 bits
  3. 256 bits
  4. All of the Above

MCQ 17: In accessing a website, a user must submit a digital certificate including the:

  1. Private key
  2. Public key
  3. Modulation key
  4. Encryption key

MCQ 18: The process of transforming data into an unreadable form is known as:

  1. Encryption
  2. Modulation
  3. Theft
  4. Forgery

MCQ 19: An alternative scheme used to avoid the problems of symmetric-key encryption is called:

  1. Hybrid-key encryption
  2. Modulation-key encryption
  3. Public-key encryption
  4. Private-key encryption

MCQ 20: To authenticate the user, public key of the user can be used in a:

  1. Challenge-response system
  2. Challenge-domain system
  3. Domain-response system
  4. Challenge-record system

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