Exam : Certified Blockchain Solutions
Architect
"If a hardfork appears on a public blockchain software
- 20 running nodes choose not to update
- What can be said about the 20 nodes ? - correct answer✔ ✔
" "The 20 nodes are running on a different blockchain network
- than the nodes that were updated
"
"What is the best practice
- preventing contract addresses from changing
- when a new contract is released - correct answer✔ ✔ "
"Use the ""- addressForce"" parameter
- when releasing a new contract
"
"Data structure to create a lightweight data fingerprint
- of all transactions in the block - correct answer✔ ✔ "
Merkle Tree
,Proof of Stake is most required and implemented by - correct
answer✔ ✔ Blockchains that manage wealth and asset
Transsactions can only be added to the blockchain - correct
answer✔ ✔ TRUE
"To prevent duplicate addresses/accounts from being generated,
on the same blockchain network
- the input for the hash function that generates the address -
correct answer✔ ✔ " should contain enough
entropy/randomness
To determine the anticipated load on an application, the number
of end users should be considered along with - correct answer✔
✔ The average no of transactions per user
In public key cryptography, the private key is used to.. - correct
answer✔ ✔ "Sign/Approve any transaction,
- that might be made by any holder of the key pair
,"
Records on the public blockchain are deleted by - correct answer
✔ ✔ They cannot be deleted
Two main types of transactions that can be performed are -
correct answer✔ ✔ "Deploy Transactions
Invoke Transactions
"
21. To approve pending ledger transactions, consensus
algorithms often implement - correct answer✔ ✔ Bizantyne
Fault Tolerance
22. It is impossible to persist media types such as MP3 and
MOV on any distributed ledger - correct answer✔ ✔ FALSE
23. Which of the following is TRUE regarding Smart Contracts
on the Ethereum Blockchain - correct answer✔ ✔ They are
Turing Complete and deterministic in nature
, In public key cryptography, public key is used in - correct
answer✔ ✔ Encrypt the private key
How are blocks of data chained together to ensure integrity of
transactions - correct answer✔ ✔ "The hash of the previous
block
- is writtent to the header of the current block
"
A Smart Contract is most like which classical programming
object - correct answer✔ ✔ Function
Which scenario would be most appropriate for a blockchain
solution to implement a Proof of Work or Proof of Stake
Consensus ? - correct answer✔ ✔ "Aim of the blockchain
- to be trustless as possible
"
Byzantine Fault Tolerance can be achieved only through Proof
of Work - correct answer✔ ✔ A. FALSE
Architect
"If a hardfork appears on a public blockchain software
- 20 running nodes choose not to update
- What can be said about the 20 nodes ? - correct answer✔ ✔
" "The 20 nodes are running on a different blockchain network
- than the nodes that were updated
"
"What is the best practice
- preventing contract addresses from changing
- when a new contract is released - correct answer✔ ✔ "
"Use the ""- addressForce"" parameter
- when releasing a new contract
"
"Data structure to create a lightweight data fingerprint
- of all transactions in the block - correct answer✔ ✔ "
Merkle Tree
,Proof of Stake is most required and implemented by - correct
answer✔ ✔ Blockchains that manage wealth and asset
Transsactions can only be added to the blockchain - correct
answer✔ ✔ TRUE
"To prevent duplicate addresses/accounts from being generated,
on the same blockchain network
- the input for the hash function that generates the address -
correct answer✔ ✔ " should contain enough
entropy/randomness
To determine the anticipated load on an application, the number
of end users should be considered along with - correct answer✔
✔ The average no of transactions per user
In public key cryptography, the private key is used to.. - correct
answer✔ ✔ "Sign/Approve any transaction,
- that might be made by any holder of the key pair
,"
Records on the public blockchain are deleted by - correct answer
✔ ✔ They cannot be deleted
Two main types of transactions that can be performed are -
correct answer✔ ✔ "Deploy Transactions
Invoke Transactions
"
21. To approve pending ledger transactions, consensus
algorithms often implement - correct answer✔ ✔ Bizantyne
Fault Tolerance
22. It is impossible to persist media types such as MP3 and
MOV on any distributed ledger - correct answer✔ ✔ FALSE
23. Which of the following is TRUE regarding Smart Contracts
on the Ethereum Blockchain - correct answer✔ ✔ They are
Turing Complete and deterministic in nature
, In public key cryptography, public key is used in - correct
answer✔ ✔ Encrypt the private key
How are blocks of data chained together to ensure integrity of
transactions - correct answer✔ ✔ "The hash of the previous
block
- is writtent to the header of the current block
"
A Smart Contract is most like which classical programming
object - correct answer✔ ✔ Function
Which scenario would be most appropriate for a blockchain
solution to implement a Proof of Work or Proof of Stake
Consensus ? - correct answer✔ ✔ "Aim of the blockchain
- to be trustless as possible
"
Byzantine Fault Tolerance can be achieved only through Proof
of Work - correct answer✔ ✔ A. FALSE
