CBSA Online Practice Questions and Answers

Secure Hash Algorithm (SHA-256) output is always 256 bits or 32 bytes in length regardless of the length of the input (even if input is millions of bytes). Select best answer.

A. NSA is spying on us so what's it matters.

B. Depends on input

C. False

D. True

When you considering cryptography for a blockchain what would be types of symmetric cryptography you could consider? (Select two.)

A. Block Ciphers

B. Rivest-Shamir-Adleman algorithm aka the RSA.

C. Stream Ciphers

D. Elliptical Curve Cryptography

What is chaincode?

A. Smart contract

B. DApps

C. Node programs

D. Virtual machines

Byzantine Fault Tolerance can be achieved only through Proof of Work.

A. FALSE

B. TRUE

How are "assets" in Hyperledger Fabric represented? (Select two.)

A. JSON

B. Node

C. YAML

D. Binary

E. Deployment Manager

Chaincode is a decentralized transactional program, running on the validating nodes. As with every chaincode, it implements the ____________________ in particular, Init and Invoke functions.

What does is actually implemented?

A. SDK

B. REST Interface

C. EVM

D. Chaincode interface

In blockchains there is the concept of "Group Consensus" and how many members must agree.

A. 52%

B. 74%

C. 75%

D. 51%

E. 100%

Which of the following scenarios and databases is least suited to be utilized by a blockchain solution?

A. Scenario: Law enforcement system; Dataset: Criminal Arrests, Warrants for Arrest, Conviction Date

B. Scenario: An Email campaign service; Dataset: Recipient Email, From Email; Subject, Body

C. Scenario: A family filter wifi router; Dataset: Websites Visited, Websites Blocked, Download History

D. Scenario: Credit score app; Dataset: Credit Score, Hard Inquiries; Collections, Date Removed, Date Added

Which types of data are able to be stored on any given blockchain ledger?

A. Each blockchain software specifies its own data storage rules

B. Any data that is within the UTC-8 standard

C. Unencrypted textual and numerical data

D. Encrypted textual and numerical data

The two main types of transactions you can perform in Hyperledger Fabric are:

A. Chaincode Read and Chaincode Write transactions

B. Deploy and Invoke transactions

C. HFRead and HFAppend transactions

D. Call and Write transactions