Web3 and Blockchain Architecture: 2026
Full Exam Guide
BLOCK 1: CORE ARCHITECTURE & SCALING
1. What is the primary purpose of "Modular Blockchains" in 2026?
A) To combine all functions into one layer
B) To separate execution, settlement, and data availability
C) To eliminate the need for nodes
D) To make blockchain work on 2G internet
Correct Answer: B) To separate execution, settlement, and data availability
2. In 2026, "Layer 2" (L2) solutions primarily aim to solve:
A) Data privacy issues
B) Scalability and high gas fees
C) Difficulty of naming tokens
D) Physical storage of servers
Correct Answer: B) Scalability and high gas fees
3. What is "Account Abstraction" (ERC-4337)?
A) Deleting inactive accounts
B) Turning wallets into smart contracts for better UX
C) Hiding account balances from the public
D) A way to ban users from a network
Correct Answer: B) Turning wallets into smart contracts for better UX
4. What is the role of a "Sequencer" in a Rollup?
A) To mine blocks on Layer 1
,B) To order and batch transactions before sending them to L1
C) To design NFT art
D) To verify user identities via KYC
Correct Answer: B) To order and batch transactions before sending them to L1
5. "Proto-Danksharding" (EIP-4844) introduces what to Ethereum?
A) Faster mining rewards
B) "Blobs" for cheaper Layer 2 data storage
C) A new programming language
D) Mandatory hardware wallets
Correct Answer: B) "Blobs" for cheaper Layer 2 data storage
6. What is a "Zero-Knowledge Proof" (ZKP)?
A) A way to prove you know a secret without revealing it
B) A test that requires zero knowledge to pass
C) A method for deleting blockchain history
D) A type of anonymous email
Correct Answer: A) A way to prove you know a secret without revealing it
7. "Data Availability" (DA) ensures that:
A) Users can always check their balance
B) Transaction data is accessible to verify the network's state
C) The internet is available for everyone
D) Computers have enough RAM to run nodes
Correct Answer: B) Transaction data is accessible to verify the network's state
8. Which consensus mechanism is most energy-efficient in 2026?
A) Proof of Work (PoW)
, B) Proof of Stake (PoS)
C) Proof of Burning
D) Proof of Physical Labor
Correct Answer: B) Proof of Stake (PoS)
9. What is a "Sidechain"?
A) A decorative chain for a wallet
B) An independent blockchain that runs parallel to a mainchain
C) A backup of the internet
D) A social media network for crypto users
Correct Answer: B) An independent blockchain that runs parallel to a mainchain
10. "Interoperability" allows different blockchains to:
A) Compete for the same users
B) Communicate and share data/assets with each other
C) Delete each other's data
D) Use the same name for different tokens
Correct Answer: B) Communicate and share data/assets with each other
BLOCK 2: DEFI & TOKENOMICS
11. What is "Liquid Staking"?
A) Staking assets while keeping them liquid via receipt tokens
B) Selling tokens immediately after buying
C) Putting tokens in a physical liquid for cooling
D) Staking only during the summer
Correct Answer: A) Staking assets while keeping them liquid via receipt tokens
Full Exam Guide
BLOCK 1: CORE ARCHITECTURE & SCALING
1. What is the primary purpose of "Modular Blockchains" in 2026?
A) To combine all functions into one layer
B) To separate execution, settlement, and data availability
C) To eliminate the need for nodes
D) To make blockchain work on 2G internet
Correct Answer: B) To separate execution, settlement, and data availability
2. In 2026, "Layer 2" (L2) solutions primarily aim to solve:
A) Data privacy issues
B) Scalability and high gas fees
C) Difficulty of naming tokens
D) Physical storage of servers
Correct Answer: B) Scalability and high gas fees
3. What is "Account Abstraction" (ERC-4337)?
A) Deleting inactive accounts
B) Turning wallets into smart contracts for better UX
C) Hiding account balances from the public
D) A way to ban users from a network
Correct Answer: B) Turning wallets into smart contracts for better UX
4. What is the role of a "Sequencer" in a Rollup?
A) To mine blocks on Layer 1
,B) To order and batch transactions before sending them to L1
C) To design NFT art
D) To verify user identities via KYC
Correct Answer: B) To order and batch transactions before sending them to L1
5. "Proto-Danksharding" (EIP-4844) introduces what to Ethereum?
A) Faster mining rewards
B) "Blobs" for cheaper Layer 2 data storage
C) A new programming language
D) Mandatory hardware wallets
Correct Answer: B) "Blobs" for cheaper Layer 2 data storage
6. What is a "Zero-Knowledge Proof" (ZKP)?
A) A way to prove you know a secret without revealing it
B) A test that requires zero knowledge to pass
C) A method for deleting blockchain history
D) A type of anonymous email
Correct Answer: A) A way to prove you know a secret without revealing it
7. "Data Availability" (DA) ensures that:
A) Users can always check their balance
B) Transaction data is accessible to verify the network's state
C) The internet is available for everyone
D) Computers have enough RAM to run nodes
Correct Answer: B) Transaction data is accessible to verify the network's state
8. Which consensus mechanism is most energy-efficient in 2026?
A) Proof of Work (PoW)
, B) Proof of Stake (PoS)
C) Proof of Burning
D) Proof of Physical Labor
Correct Answer: B) Proof of Stake (PoS)
9. What is a "Sidechain"?
A) A decorative chain for a wallet
B) An independent blockchain that runs parallel to a mainchain
C) A backup of the internet
D) A social media network for crypto users
Correct Answer: B) An independent blockchain that runs parallel to a mainchain
10. "Interoperability" allows different blockchains to:
A) Compete for the same users
B) Communicate and share data/assets with each other
C) Delete each other's data
D) Use the same name for different tokens
Correct Answer: B) Communicate and share data/assets with each other
BLOCK 2: DEFI & TOKENOMICS
11. What is "Liquid Staking"?
A) Staking assets while keeping them liquid via receipt tokens
B) Selling tokens immediately after buying
C) Putting tokens in a physical liquid for cooling
D) Staking only during the summer
Correct Answer: A) Staking assets while keeping them liquid via receipt tokens
