Week 2 – Pelcgbybtl (Cryptology)

it security defense against the digital dark arts week 2 answers

Symmetric Encryption

1. What are the components that make up a cryptosystem? Check all that apply.

  • Key generation algorithms
  • Encryption algorithms
  • Transmission algorithms
  • Decryption algorithms

2. What is steganography?

  • The practice of encoding messages
  • The study of languages
  • The study of stegosauruses
  • The practice of hiding messages

3. What makes an encryption algorithm symmetric?

  • High speed
  • Very large key sizes
  • Different keys used for encryption and decryption
  • The same keys used for encryption and decryption

4. What's the difference between a stream cipher and a block cipher?

  • Stream ciphers can’t save encrypted data to disk.
  • Stream ciphers encrypt data as a continuous stream, while block ciphers operate on chunks of data.
  • Block ciphers are only used for block device encryption.
  • There is no difference.

5. True or false: The smaller the encryption key is, the more secure the encrypted data is.

  • TRUE

Devendra Kumar

Project Management Apprentice at Google

This Post Has 2 Comments

  1. Zee

    please correct question 18… the answer should also include “Remote attestation”

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