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Viewing questions 51-60 out of questions
Questions # 51:

What is diagram referencing below?

Question # 51

Options:
A.

AND Gate

B.

XOR Gate

C.

OXR Gate

D.

NAND Gate

Questions # 52:

Public blockchains can alter the blockchain ledger by:

Options:
A.

Creating a hard fork of the blockchain data, tooling and/or software

B.

Achieving community consensus via a Smart Contract to update the ledger

C.

Re-hashing the blocks from the total block height down to the genesis block

D.

Blockchain ledgers are immutable and can never be altered

Questions # 53:

What type of attack would be considered a very large flaw in public blockchains such as Bitcoin’s Blockchain where the majority of hashpower could possibly be controlled thru an attack?

What is the specific attack Bitcoin could be exposed to?

Options:
A.

51% Attacks

B.

Tether Token Hack

C.

DDoS Attack

D.

BIP attack

E.

Parity Wallet Attack

Questions # 54:

Select the best statement for determining how consensus is reached.

Options:
A.

By the miner nodes which make sure that a transaction is valid.

B.

By a cryptographic secure signature algorithm called ECDSA which makes sure that cheating is impossible.

C.

By every single node in the blockchain network different transactions.

D.

By every single node in the blockchain network executing the same transaction.

Questions # 55:

The CA (Fabric CA by default) issues a ______________ to each member (organization or individual) that is authorized to join the network.

Options:
A.

rootCert

B.

tCert

C.

eCert

D.

NodeCert

Questions # 56:

Which cryptocurrency is also known as "Smart Money" in the blockchain world?

Options:
A.

Ether

B.

BTC

C.

Monero

D.

Litecoin

Questions # 57:

An encryption algorithm transforms plain text into cipher text using a key?

Options:
A.

TRUE

B.

FALSE

Questions # 58:

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

What is the command?

Options:
A.

geth list accounts

B.

geth account node list

C.

geth account node

D.

geth account list

Questions # 59:

What type of peer node executes transactions?

Options:
A.

Monitoring

B.

API Peer

C.

Endorsing Peer

D.

Ordering Peer

Questions # 60:

How are blocks of data “chained” together to ensure the integrity of transactions?

Options:
A.

The hash of the previous block is written to the header of the current block

B.

The ID of the previous block is stored in the current block

C.

A public key is stored in each block for data decryption

D.

The hash of the genesis block is kept in all block headers

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