in data communicatiuons

A sender has a total of ten frames to transmit starting at number 0 with the window size is 5 and Module 8 for sequence numbering. Document the flow of frames if selective-repeat sliding window mechanism is used. 7th and 9th frames developed errors.

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.

Using Hamming code, find out whether the following received message contains any errors and if so, identify which bit is in error: 1011110010110. Finally, identify the original user message. The message was coded using even hamming code. Assume there can only be error in one bit or no error. Show your work.

For each of the IP addresses below, explain which host(s) a packet containing the address will be delivered to.

(i) 200.200.200.30 / 24

(ii) 200.200.200.255 / 24

(iii) 200.200.200.254 /24

(iv) 200.200.200.0 / 24

(v) 200.200.200.1 / 24