20. What is the minimum number of connections that must be broken or removed in the network before computer E can no longer communicate ith computer F?
(A) 1
(B) 2
(C) 3
(D) 4

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).

What allows you to create a wireless connection among your smart devices

Which two technologies support the building of single-page applications?