Can someone help me with this

3. bob is arguing that if you use output feedback (ofb) mode twice in a row to encrypt a long message, m, using the same key each time, it will be more secure. explain why bob is wrong, no matter what encryption algorithm he is using for block encryption (15 points).

When you mouse over and click to add a search term this(these) boolean operator(s) is(are) not implied. (select all that apply)?

What is the term for water wave that is created by an underwater earthquake