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Hyperledger Composer has two main components.

What are the two components? (Select two.)

A.

Fabric

B.

Sawtooth

C.

Playground

D.

Explorer

E.

Business Network Archive

F.

SDK

A Smart Contract is most like which classical programming object?

A.

Class

B.

Variable

C.

Method

D.

Function

Hyperledger can best be described as a ____________________?

A.

Blockchain that exclusively supports PoS Consensus

B.

Permissionless blockchain

C.

Token

D.

Blockchain that exclusively supports PoW Consensus

E.

Umbrella collaboration of open source blockchains

What consensus algo uses a method of sending coins to an address where they cannot be retrieved?

A.

Proof of Stake

B.

Proof of Activity

C.

Proof of Burn

D.

Proof of Sending

If a company desires to create a unique cryptocurrency and launch a new blockchain network to host it.

A.

They must use ERC20 standard for the token, clone the Ethereum Virtual Machine, then launch a series of nodes

B.

They must use ERC20 standard for the token and can use any open source blockchain tool/system to launch a series of nodes

C.

They can both create their own cryptocurrency and launch their own blockchain network with any common open source blockchain tool/system

D.

None of the above

In the Bitcoin blockchain the "block creation time" is set to 10 minutes and this can never change.

A.

FALSE

B.

TRUE

Chaincode Services uses Docker to host (deploy) the chaincode without relying on any virtual machine or computer language.

What would be the main reason or best reason that Hyperledger chose containers over virtual machines?

A.

Docker provides a secured, lightweight method to sandbox chaincode execution that is not “locked down”.

B.

Docker provides a secured, lightweight method to sandbox chaincode execution that is not “locked down” but additional programming languages cannot be enabled.

C.

Docker provides a secured, lightweight method to sandbox chaincode execution that is “locked down”.

D.

Docker is fully compatible with Hyperledger and Linux with an upgrade subscription.

You are considering writing smart contracts and there are a few different languages you can consider. (Select two.)

A.

Truffle

B.

Serpent

C.

Solidity

D.

Embark

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

A.

rootCert

B.

tCert

C.

eCert

D.

NodeCert

If a hard fork occurs on a public blockchain software and 20 running nodes choose not to update, what can be said about those 20 nodes?

A.

They are effectually now operating on a different blockchain network than the nodes that updated

B.

They are considered “out of compliance”

C.

They are flagged for removal from the network and can no longer collect fees

D.

They are unable to achieve consensus