QUESTION 6 Which of the 4 operations are not included for each round in the AES algorithm Substitute Bytes O Permutation Shift Columns O Mix Rows Which of the following malware do not replicate or reproduce through infection? Worms O Trojans Viruses O Rootkits In block cipher required where each 64-bit block is encrypted and decrypted independently OCBC cipher block chaining O ECB electronic Codebook O Cipher feedback O Output feedback used 5x5 state matrix and the plain text is encrypted two letters at a time O Monoalphabetic substitution O A polyalphabetic substitution The Playfair algorithm O DES symmetric algorithm Insertion of messages into the network from a fraudulent source Masquerade Content modification Sequence modification Timing modification