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  1. Home
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  3. CBSA

Blockchain CBSA Exam (page: 8)
Blockchain BTA Certified Solution Architect
Updated on: 25-Dec-2025

Viewing Page 8 of 47
CBSA PDF 229 Questions

What is the language that Solidity is using to build on the Ethereum Virtual Machines(EVM)?

  1. .Net
  2. Javascript
  3. C++
  4. Node.js
  5. PHP

Answer(s): B

Explanation:

Javascript is the language that Solidity is using to build on the Ethereum Virtual Machine


Reference:

https://www.quora.com/What-is-the-best-programming-language-to-learn-if-you-want-to-work-on-the-blockchain



Regarding Ethereum contracts, the contracts can call (perform) two specific message calls. The message calls are either ____________or ____________? (Select two.)

  1. Bitcoin nodes
  2. Send Ether to non-contract
  3. DApps
  4. Other contracts
  5. Ether Nodes

Answer(s): B,D

Explanation:

Contracts can call other contracts or send Ether to non-contract accounts by the means of message calls. Message calls are similar to transactions, in that they have a source, a target, data payload, Ether, gas and return data. In fact, every transaction consists of a top-level message call which in turn can create further message calls.



Which of the following hashing algos is considered to be the strongest?

  1. RSA
  2. SHA-2
  3. AES
  4. MD-5
  5. SHA

Answer(s): B

Explanation:

SHA-2 consists of a set of 6 hashing algorithms, and is considered the strongest. SHA-256 or above is recommended for situations are security is vital. SHA-256 produces 32-byte hash values.


Reference:

https://www.securityinnovationeurope.com/blog/page/whats-the-difference-between-hashing-and-encrypting



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

  1. Block Ciphers
  2. Rivest-Shamir-Adleman algorithm aka the RSA.
  3. Stream Ciphers
  4. Elliptical Curve Cryptography

Answer(s): A,C


Reference:

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



The ____________ is the runtime environment for smart contracts in Ethereum?

  1. Metamask
  2. Ether
  3. Mist
  4. EVM

Answer(s): D

Explanation:

EVM The Ethereum Virtual Machine (EVM) is the runtime environment for smart contracts in Ethereum. It is not only sandboxed, but actually completely isolated, which means that code running inside the EVM has no access to network, filesystem, or other processes. Smart contracts even have limited access to other smart contracts.



Viewing Page 8 of 47



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