ECB stands for
(a) Electronic cipher Block
(b) Electronic code Block
(c) Electronic code Book
(d) Electronic cipher Book

Which among the following is not CPA secure?
(a) ECB
(b) CBC
(c) CFB
(d) None

Which of the following are block ciphers?
(a) ECB
(b) CBC
(c) CFB
(d) All

Which is the fastest mode of operation among four mode of operation?

Which mode of operation is more secure?

What is importance of Intialiczation Vector(IV) and CTR ?

Why ECB is not CPA-secure and Why CBC is CPA-secure?

Suppose IV is not random.Then is CBC and OFB mode both secure