Blockchain BTA Certified Blockchain Solution Architect CBSA Exam Questions

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Total 229 questions
Question 1

Chaincode is a decentralized transactional program, running on the validating nodes. As with every chaincode, it implements the ____________________ in particular, Init and Invoke functions.

What does is actually implemented?



Answer : D

Chaincode is a decentralized transactional program, running on the validating nodes. As with every chaincode, it implements the Chaincode interface in particular, Init and Invoke functions. Init is called during Instantiate transaction after the chaincode container has been established for the first time, allowing the chaincode to initialize its internal data. Invoke is called to update or query the ledger in a proposal transaction. Updated state variables are not committed to the ledger until the transaction is committed.


Question 2

You are using Truffle for an Ethereum contract and would like to use a default set of contracts and tests from within an empty project directory.

What is the syntax?



Answer : B


Question 3

Select the two kinds of accounts in Ethereum which share the same address space. (Select two.)



Answer : B, C


Question 4

Blockchain systems assume all parties are trusted by all other parties in the exchange or ecosystem.



Answer : A


Question 5

In the EVM every account has a persistent key-value store mapping 256-bit words to 256-bit words called ________



Answer : C

Every account has a persistent key-value store mapping 256-bit words to 256-bit words called storage.


Question 6

Taking a series of unrelated transactions and writing them to a particular block is:



Answer : A


Question 7

Geth uses what port to expose the Ethereum RPC Service?



Answer : B


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Total 229 questions