Black Friday Special 60% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: bestdeal

Effective Study Techniques for the Blockchain CBSA Exam

Questions 41

Consider the following scenario: A solo app developer wants to create their own cryptocurrency and build a blockchain based that allows users to buy and sell second-hand items with that cryptocurrency from each other. Before the transaction is considered complete, the purchaser must put the funds in an escrow service and the sender must enter the courier tracking number into that same escrow. Time is of the essence and this developer doesn’t want to worry about networking of infrastructure. This app must be fully autonomous or “decentralized”.

Which architecture would best solve the product need?

Options:

A.

Ethereum for token creation and escrow service; User-facing features built with web technologies and deployed through IPFS

B.

Ethereum for token creation; Traditional multitier API and database for escrow service; User-facing features built in web technologies then minified unto a String and deployed to an Ethereum Smart Contract

C.

Hyperledger Fabric for the escrow service and token creation using chaincode; User-facing features built with Hyperledger Composer

D.

The product cannot be built. Fully decentralized apps are not yet possible for user interface

Buy Now
Questions 42

Gas has multiple associated terms with it: Gas Prices, Gas Cost, Gas Limit, and Gas Fees. The principle behind Gas is to have a stable value for how much a transaction or computation costs on the Ethereum network.

Which is considered to be the static value for how much a computation costs in terms of Gas?

Options:

A.

Price

B.

Fee

C.

Cost

D.

Limit

Buy Now
Questions 43

______ is the official Ethereum IDE that allows developers to build and deploy contracts and decentralized applications on top of the Ethereum blockchain.

Options:

A.

Mist

B.

Mix

C.

Truffle

D.

Metamask

E.

Embark

Buy Now
Questions 44

A Blockchain network can be best categorized as:

Options:

A.

A centralized network

B.

A decentralized peer-to-peer network

C.

A series of nodes managed by a genesis node

D.

A distributed network centralized ledgers

Buy Now
Questions 45

In common blockchain design, identity and transaction approval is possible through:

Options:

A.

AES encryption

B.

Public key cryptography

C.

Secret key cryptography

D.

None of the above

Buy Now
Questions 46

Which of the following blockchain key components state how the transactions will be confirmed?

Options:

A.

Distributed Ledger database

B.

Validity Rules

C.

Consensus Algorithm

D.

Encryption

Buy Now
Questions 47

What component on the blockchain maintains the "world state"?

Options:

A.

.acl

B.

Reputation Manager

C.

Distributed Ledger

D.

.bna

Buy Now
Questions 48

Pending transactions on the Ethereum blockchain are always ordered by highest fee paid to lowest, and then written to the block in that order.

Options:

A.

FALSE

B.

TRUE

Buy Now
Questions 49

You are considering a cryptocurrency and for your privacy and anonymity are number one priority.

Which cryptocurrency should you likely use?

Options:

A.

Monero

B.

Bitcoin

C.

Dash

D.

Shadowcoin

E.

Litecoin

Buy Now
Questions 50

R3 Corda does not organize time into blocks. What does Corda actually perform and use?

CBSA Question 50

Options:

A.

Ripple is implemented as the blockchain and XRP for cryptocurrency.

B.

Notary services and timesmapping

C.

R3 Corda is a blockchain and does use blocks

D.

Notary services and timestamping

Buy Now