1. In CSMA/CD, what is the probability that a node selects K = 5 after 7 collisions? If K = 7 on a 20 Mbps Ethernet, how many seconds of delay does this correspond to? Show all steps! [10%] 2. Using the RSA security algorithm with p = 5 and q = 7, construct the public key and private key. Encrypt the message "thanks." Apply the decryption algorithm to recover the original plain message from the encrypted message. Show all steps! [15%]

Please use Python

There are a number of languages that may be used to write computer code. Each thing on the following list should be explained in a succinct manner. Please do so.

During which part of the scientific method would error bars be used?