Bob wants to store a piece of data DDD on the blockchain, ensuring its integrity. To do so, he generates a hash H(D)H(D), which is the cryptographic hash of the data DD. The hash function HH satisfies the following properties: Preimage Resistance: Given a hash hh, it is computationally infeasible to find DD such that H(D)=hH(D) = h. Collision Resistance: It is computationally infeasible to find two different data sets D1≠D2D_1 \neq D_2​ such that H(D1)=H(D2)H(D_1) = H(D_2). Now, consider that Bob stores (D,H(D))(D, H(D)) on the blockchain, and later, Alice retrieves this data. Alice wants to verify the integrity of DD. The integrity check is given by: Integrity Check =True if H(D)==H(D′)Where D′D’ is the retrieved data and H(D′)H(D’) is the hash of the retrieved data. What must Alice check to ensure the integrity of the data?

A disheveled, severely depressed patient with psychomotor retardation has not showered for several days. The nurse should:

Given a message “Hello, World!” and a hash function H, if H (“Hello, World!”) produces the hash value “5eb63bbbe01eeed0934c4f570a7d8d27”, which property of the hash function is demonstrated?

During an assessment, the patient tells the nurse that she is constantly worrying about her room and that she checks to be sure all of her things are neatly put away and in order every hour or two throughout the day. The nurse identifies this behavior as an indication of:

Antipsychotic medications may be used to treat psychotic symptoms as well as provide mood stabilization.  A potential side effect of atypical antipsychotics (Olanzipine, Risperidone, etc.) is:

Design a Merkle Tree for the data blocks D1, D2, D3, D4, D5, D6, D7, D8. What is the Merkle Root if the hash function H produces the following hash values for each data block: H(D1) =A1, H(D2) = A2, H(D3) = A3, H(D4) = A4, H(D5) = A5, H(D6) = A6, H(D7) = A7, H(D8) = A8?

A user wants to obtain a digital certificate from a CA. Which mathematical operation does the CA perform to sign the user’s certificate?

Moving into the following year, policy makers wanted to see Real GDP increase by $100,000,000. What might you have told them to do if the MPS is .10? What policy is this? What type of this specific policy are you using? What is the goal you are looking to achieve? How large should the policy measure be? In order to receive full credit, you should include the MPC, Fiscal Multiplier and dollar amount of the policy in support of your answers above.   Additionally, if you can accurately explain this using the AD/AS model framework, additional credit may be awarded.

The last part of the test will all be addressed together as one piece. Consider an economy with the following data. This economy measures performance in the same way that the United States Economy measures performance.  Interpretation for these variables should be completed using the definitions we have discussed in this class. You are tasked with assisting the Federal Government and the Federal Reserve in designing policy to affect this economy.  Year Population CPI GDP 2020 47,649 1.00 $1,596,765,365 2021 53,899 1.10 $1,580,711,141 2022 54,016 1.28 $1,640,912,358 2023 55,185 1.37 $1,669,124,467         Year Employed Unemployed Institutionalized 2020 43,395 2,021 1,001 2021 43,971 2,931 1,190 2022 44,297 3,501 1,237 2023 45,648 2,911 1,270

Fiscal Policy/Monetary Policy Problems and Interactions What effects or problems could these two policies have? How would they interact? (Hint: This is not the only thing you should address here.  However, you should definitely include something about the market for loanable funds. This is the market where everyone borrows money.)