Answer:
The correct answer is letter "A": The message is broken into independent blocks which are encrypted.
Explanation:
There are five (5) main forms of encryption: <em>Electronic Code Book (ECB), Cipher Block Chaining (CBC), Cipher Feedback (CFB), Output Feedback (OFB), and Output Feedback (OFB)</em>. Electronic Code Book (ECB) is the simplest of all of them. Using this method to encrypt information implies dividing a message into two parts to encrypt each block independently. ECB does not hide patterns effectively because the blocks are encrypted using identical plaintexts.
Ump will be assigned to word2
word1[0:3] gets all of the letters from index 0 to index 3 exclusive (that means index 3 is not included)
The command is : <span>rm [Aa]*[Zz] </span>
deep blue IBM's chess-playing computer