Introduction to Cryptography and Data Protection
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Questions and Answers

What is the purpose of Cryptography according to the text?

  • To modify and forge data for personal benefit
  • To thwart hackers and prevent security attacks
  • To enhance data processing systems of an organization
  • To protect data during its journey between computers (correct)
  • Which of the following is NOT an aspect of information security as mentioned in the text?

  • Security mechanism
  • Data storage management (correct)
  • Security attack
  • Security service
  • What is the role of a Security Mechanism?

  • To increase the risk of security attacks
  • To enhance the security of data processing systems (correct)
  • To compromise the security of information
  • To define security requirements for an organization
  • What does Network Security primarily aim to protect?

    <p>Data during their transmission between computers</p> Signup and view all the answers

    In the context of information security, what is a Security Service's main function?

    <p>Enhancing the security of data processing systems</p> Signup and view all the answers

    Which aspect helps the manager define security requirements for an organization effectively?

    <p>Security mechanism</p> Signup and view all the answers

    What is the main purpose of cryptography?

    <p>To transform an intelligible message into an unintelligible one</p> Signup and view all the answers

    What is the difference between encipher and decipher processes?

    <p>Encipher involves encrypting the message, while decipher involves decrypting the message.</p> Signup and view all the answers

    What is the role of a key in cryptography?

    <p>To secure the encryption and decryption processes</p> Signup and view all the answers

    What distinguishes symmetric key encryption from public key encryption?

    <p>In symmetric key encryption, sender and receiver use different keys; in public key encryption, they use the same key.</p> Signup and view all the answers

    What is the difference between a block cipher and a stream cipher?

    <p>Block cipher processes blocks of elements at a time, while stream cipher processes input continuously.</p> Signup and view all the answers

    What is the objective of cryptanalysis?

    <p>To convert encrypted messages back into plaintext without knowing the key</p> Signup and view all the answers

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