Question: (a) Use an affine cipher to encrypt the message hello with the key pair (7,2) In modulo 26. (b) Suppose a system consists of three

(a) Use an affine cipher to encrypt the message "hello" with

(a) Use an affine cipher to encrypt the message "hello" with the key pair (7,2) In modulo 26. (b) Suppose a system consists of three nodes. Each node communicate each other. If one node fails then whole data to be loss. As a result this system cannot work properly. How to solve this data losses

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