How do clustered systems differ from multiprocessor systems? What is required for two machines belonging to a cluster to cooperate to provide a highly available service?

Hey i really need some solving this problem: 1. encrypt this binary string into cipher text: 110000. include in your answer the formula the decoder would use to decrypt your cipher text in the format (coded answer) x n mod (m) = y & 2. decrypt this cipher text into a binary string: 106 you.