Identify the following transactions that they are whihc type of market. a. A farmer agrees to sell 10,000 bushels of wheat at the rate of $4.50 per bushel to a buyer in three months. A regulated exchange, such as the Chicago Board of Trade, completes the transaction.
b. Long-term mortgage-backed securities are traded between investors and issuers.
c. An investor holding 3,000 shares of stock of Strata Corp. sells them to another investor.

Problem 3: access control pokeygram, a cutting-edge new email start-up, is setting up building access for its employees. there are two types of employees: managers and engineers, and there are three departments: security, networking, and human resoures. each employee works in a single department, and each department is housed on a different floor. managers are allowed access to any floor, while engineers are allowed access only to their own floor. there are three badge-operated elevators, each going up to only one distinct floor. every employee has one badge. pokeygram wants to use the best possible access control method in order to minimize delay for the elevators (a) access control matrix, 1. which of the following would you recommend that pokeygram use: (b) access control lists, or (c) capabilities? make sure to justify your answer. 2. what, if any, would be the benefits (and/or disadvantages) of using rbac (role-based access control) in this situation? keep your solution for this problem limited to 10-12 lines of text.