Which of the following evaluates to the variable x rounded to two decimal places?

a. round(x, 2)
b. round(2, x)
c. round(x), 2
d. round(2), x

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).

Http is the protocol that governs communications between web servers and web clients (i. e. browsers). part of the protocol includes a status code returned by the server to tell the browser the status of its most recent page request. some of the codes and their meanings are listed below: 200, ok (fulfilled)403, forbidden404, not found500, server errorgiven an int variable status, write a switch statement that prints out the appropriate label from the above list based on status.

What are "open-loop" and "closed-loop" systems