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Encryption: Quiz


Question 1: In cryptography, encryption is the process of transforming information (referred to as plaintext) using an algorithm (called ________) to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key.
Substitution cipherCipherOne-time padCryptanalysis

Question 2: See, e.g., traffic analysis, ________, or Trojan horse.
Signals intelligenceTEMPESTCryptographySteganography

Question 3: Encryption, by itself, can protect the confidentiality of messages, but other techniques are still needed to protect the integrity and authenticity of a message; for example, verification of a message authentication code (MAC) or a ________.
RSAPublic-key cryptographyDigital signaturePublic key infrastructure

Question 4: [1] Encryption can be used to protect data "at rest", such as files on ________ and storage devices (e.g.
LinuxCentral processing unitPersonal computerComputer

Question 5: the Internet, e-commerce), mobile telephones, wireless microphones, wireless intercom systems, ________ devices and bank automatic teller machines.
BluetoothIS-95IEEE 802.11CDMA2000

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