New PMP Question & Answers with explanation

You have recently taken over a project as the project manager. The project is midway through execution, and most of the project work has been subcontracted. You have just found out that one of the subcontractors, who was responsible for all demolitions, has been paid 50 percent of the subcontracted value, but he has delivered only 25 percent of the required works. Upon investigation, you learned that all the payments are in line with the signed contract between the two parties and the subcontractor’s work is compliant with the contract specifications. You are annoyed because this does not give you enough control over the subcontracted works. Which of the following is not an appropriate thing to do at this stage?
Select one
You have recently joined an organization as the procurements manager. You have just received an invoice from a contractor. Some of the items from the invoice are as follows: EV of work completed to date: $50,000. AC of work completed to date: $40,000. Total costs reimbursed by the buyer to date: $35,000. If the contract between the buyer and the contractor is a CPIF contract, what is the total value payable to this contractor? (Assume that the contract allows for a 10 percent fee over net payable whenever CPI > 1).
Select one
You have just received an invoice from your supplier that contains some uncertified items. Payments to the supplier are processed through your corporate accounts payable system only after certification of satisfactory work by the project quality control specialist. What should you do?
Select one
You manage the construction of a new airport in your home country. Since your organization does not have experience deploying the sophisticated air-traffic control system, you outsourced this to a specialist organization. PMBOK’s Procurement Management knowledge will help you successfully administer this deal; however, for the supplier of the system, all the PMBOK processes will apply since this will be a complete project for the supplying organization. Which of the following will be a common denominator between your project and the supplier projects?
Select one
You are managing a railway track construction project. The construction contract awarded to your company is fixed price and is based on some pre-determined quantities of work to be executed. During the project execution you find out that the actual quantities of work that need to be executed are 20% greater than what has been stated in the contract. What should you do?
Select one