ExamGecko
Home Home / Blockchain / CBSA

Blockchain CBSA Practice Test - Questions Answers, Page 7

Question list
Search
Search

You are using Geth and you would like to list the accounts controlled by the node.

What is the command?

A.
geth list accounts
A.
geth list accounts
Answers
B.
geth account node list
B.
geth account node list
Answers
C.
geth account node
C.
geth account node
Answers
D.
geth account list
D.
geth account list
Answers
Suggested answer: D

Explanation:

Reference: https://datawookie.netlify.com/blog/2018/01/ethereum-running-a-node/

___________________ensures that the shared ledgers are exact copies, and lowers the risk of fraudulent transactions, because tampering would have to occur across many places at exactly the same time.

A.
Encryption
A.
Encryption
Answers
B.
Consensus
B.
Consensus
Answers
C.
Validation
C.
Validation
Answers
D.
Replication
D.
Replication
Answers
Suggested answer: B

Explanation:

Consensus ensures that the shared ledgers are exact copies, and lowers the risk of fraudulent transactions, because tampering would have to occur across many places at exactly the same time

Reference: https://www.ibm.com/developerworks/cloud/library/cl-blockchain-basics-intro-bluemix-trs/index.html


Ethereum tries to keep the mining time difference between ____ and _____seconds.

A.
10, 18
A.
10, 18
Answers
B.
10, 20
B.
10, 20
Answers
C.
10, 29
C.
10, 29
Answers
D.
10, 19
D.
10, 19
Answers
Suggested answer: D

Explanation:

Reference: https://dltlabs.com/how-difficulty-adjustment-algorithm-works-in-ethereum/

Which of the following cryptocurrencies use an alternate consensus method called "Scrypt" to BTC's Proof of Work (POW) SHA-256 algorithm?

A.
Ripple
A.
Ripple
Answers
B.
Peercoin
B.
Peercoin
Answers
C.
Litecoin
C.
Litecoin
Answers
D.
Steemit
D.
Steemit
Answers
Suggested answer: C

Explanation:

The Scrypt hash function was initially implemented by the Litecoin development team to avoid what are known, ASICs, from being able mine its cryptocurrency. When mining for cryptocurrencies, users typically have an option between: a CPU, GPU or ASIC miner.

Reference: https://www.mycryptopedia.com/litecoin-scrypt-algorithm-explained/

What is chaincode?

A.
Smart contract
A.
Smart contract
Answers
B.
DApps
B.
DApps
Answers
C.
Node programs
C.
Node programs
Answers
D.
Virtual machines
D.
Virtual machines
Answers
Suggested answer: A

Explanation:

Reference: http://hyperledger-fabric.readthedocs.io/en/release-1.1/chaincode.html

Addresses on a blockchain are derived by a process of hashing _________.

A.
Wallet Addresses
A.
Wallet Addresses
Answers
B.
Private Keys
B.
Private Keys
Answers
C.
IP Addresses
C.
IP Addresses
Answers
D.
Mac addresses
D.
Mac addresses
Answers
E.
Public Keys
E.
Public Keys
Answers
Suggested answer: E

Explanation:

Reference: https://medium.com/@ConsenSys/blockchain-underpinnings-hashing-7f4746cbd66b

When considering a new ERC20 token its best to consider using ____________________.

A.
Use a template from AWS
A.
Use a template from AWS
Answers
B.
Audited Implementation
B.
Audited Implementation
Answers
C.
Start a new one
C.
Start a new one
Answers
D.
Copy from existing token
D.
Copy from existing token
Answers
Suggested answer: A

Explanation:

Reference: https://medium.com/@merunasgrincalaitis/gain-ethereum-ico-trust-credibility-e9e53145c331

Smart Contracts are generally written in specific programming languages. Which one is NOT a language for smart contracts?

A.
.Net
A.
.Net
Answers
B.
Viper
B.
Viper
Answers
C.
LLL
C.
LLL
Answers
D.
Solidity
D.
Solidity
Answers
Suggested answer: A

What is diagram referencing below?

A.
AND Gate
A.
AND Gate
Answers
B.
XOR Gate
B.
XOR Gate
Answers
C.
OXR Gate
C.
OXR Gate
Answers
D.
NAND Gate
D.
NAND Gate
Answers
Suggested answer: B

Explanation:

XOR or "Exclusive OR" is a logic gate.

Reference: https://blockgeeks.com/guides/cryptocurrencies-cryptography/

Which of the following is considered the most popular public key encryption algorithm?

A.
RSA
A.
RSA
Answers
B.
AES
B.
AES
Answers
C.
MD5
C.
MD5
Answers
D.
PGP
D.
PGP
Answers
Suggested answer: D

Explanation:

Reference: https://medium.com/@ConsenSys/blockchain-underpinnings-hashing-7f4746cbd66b

Total 230 questions
Go to page: of 23