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CubFoods sells unshelled peanuts by the pound. Historically, CubFoods observed that daily demand is normally distributed with a mean of 50 pounds and a standard deviation of 4 pounds. Lead time is 9 days. The manager wants a service level of 95 percent (Z = 1.65).(Do not round intermediate calculations. Round your answers to three decimal places.)What is the ROP ?

Least common mechanism is one of the Saltzer and Schroeder’s security principle. One example of this principle is to prefer a library function call over a system call. Give one reason from a security stand point supporting use of library and one against using a library call. (In Linux, a library function executes in the user space and system call executes in kernel space.) [3 + 3pts]

Alice logs into an e-commerce site, abcshopping.com, that also provides a message feature. Post authentication, every user’s session is associated with an authenticated session ID. Bob sends Alice a message with a tag that says. What type of attack Bob is attempting on Alice? How can the website eliminate the threat from such attack vectors? [3+3pts]

A blockchain is decentralized in that no single person or select group of people controls the blockchain network. That decentralization is important because all participants on the blockchain need to agree on the current state of the blockchain.Propose an attack scenario to compromise a blockchain, e.g., injecting a corrupted block into the chain. [6pts]

One principle of usable security is to make the UI design clear and follow user expectation.

In general, an IRB approval is sufficient for ethical security research.

Fuzzing-based bug detection tends to have less false positives, compared to static analysis–based detection.

The Biba model is for protecting integrity, so it is “no write down and no read up”.

The Menlo report attempts to summarize a set of basic principles to guide the identification and resolution of ethical problems arising in research of or involving information and communication technology. The core of the report is four general principles. List the four principles and use one sentence to explain each of them. [1.5pts X 4]

11. Select the suffix that means “science or study of.”