please answear question below

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What is Cryptography?
  • A. the science of analyzing and deciphering codes and ciphers and cryptograms
  • B. the science of cracking codes, ciphers and cryptograms
  • C. the process to automatically encrypt your business email based on policy definitions
  • D. Integrated Penetration Testing

What is is a widely-used method of data encryption using a private (secret) key that was judged so difficult to break by the U.S. government that it was restricted for exportation to other countries?
  • A. AES
  • B. DEs
  • C. Stream Cipher
  • D. Block Cipher

The U.S government adopted this algorithm as its encryption technique in October 2000, replacing the DES encryption it used.
  • A. Triple DES
  • B. Blowfish
  • C. AES
  • D. Encryption

What is a type of symmetric-key encryption algorithm that transforms a fixed-length block of plaintext (unencrypted text) data into a block of ciphertext (encrypted text) data of the same length?
  • A. Stream Cipher
  • B. DES
  • C. AES
  • D. Block Cipher

Public-key encryption is also known as:
  • A. symetric-key encryption
  • B. asymmetric-key encryption
  • C. block-key encryption
  • D. stream-key encryption
 
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