i) Show clearly how the following plaintext: MeetBankThreeThirty would be converted into ciphertext using the Caesar Cipher and a key of 5.

Give three reasons why this encrypted message would be insecure when in transit over a network.

Given the message 1011110 is to be transmitted over a data link. The agreed generator polynomial is X2 + 1. Show the calculation and the frame to be transmitted.

Show how the receiver can verify the message when it is correctly received.