New PMP Question & Answers with explanation

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?
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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?
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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?
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You are managing a construction project. Your company does not specialize in construction design so you outsourced the construction design to a third party. You are conducting regular procurement performance reviews and are dissatisfied. You want to carry out a detailed audit of the design supplier’s work processes to determine the root cause. Can you do that?
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You are currently managing an urban development project for a municipal authority. You and your team are managing the project and have outsourced most of the project work to specialist contractors. All the contracts awarded were FFP contracts. The project is almost 50 percent complete, and most of the contractors have requested amendments to their contacts. Work specifications were not clear at the time of contract awards, and as a result, new work requirements have come up. What is your lesson learned?
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