Blockchain CBDH Exam Questions & Answers

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Questions 1

When reviewing chaincode you see a function called "ChaincodeStubInterface" in the program. What does this function do?

A. It is used to access the ledger.

B. It is used to access the chaincode interface.

C. It is used to access the ledger and modify the ledger.

D. It is used to stop the chaincode interface.

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Questions 2

Blockchain solutions are comprised of four building blocks. Which of the following answers list the building blocks?

A. Shared ledger, Privacy, Trust, and Smart Contracts or (Chaincode)

B. Shared ledger, Centralization, Trustless, and Smart Contracts or (Chaincode)

C. Shared ledger, Privacy, Trustless, and Smart Contracts or (Chaincode)

D. Shared ledger, Centralization, Trust, and Smart Contacts or (Chaincode)

Show Answer

Questions 3

Query is called whenever you query your chaincode's state. Queries do not result in blocks being added to

the chain, and you cannot use certain functions.

Which function can you not use inside a Query?

A. Error

B. Getstate

C. Putstate

D. Read

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