Why deployment process matters in Blockchain / Solidity - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to deploy a smart contract using a deployment function.

Blockchain / Solidity

contract = [1]('MyContract')

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Atest

Bcompile

Cdeploy

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using compile instead of deploy

Trying to run the contract directly

Confusing test with deploy

The deploy function is used to send the smart contract to the blockchain network.

2fill in blank

medium

Complete the code to wait for the deployment transaction to be confirmed.

Blockchain / Solidity

tx_receipt = tx.wait([1])

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A1

B10

C5

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Waiting for 0 confirmations which means no confirmation

Waiting for too many confirmations unnecessarily

Waiting for 1 confirmation ensures the deployment is recorded on the blockchain.

3fill in blank

hard

Fix the error in the deployment code by choosing the correct network parameter.

Blockchain / Solidity

network = [1]  # Choose the correct network for deployment

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A'devnet'

B'mainnet'

C'localhost'

D'testnet'

Attempts:

3 left

💡 Hint

Common Mistakes

Deploying to testnet when real deployment is needed

Using localhost which is only for local testing

Deploying to 'mainnet' means the contract is live on the real blockchain.

4fill in blank

hard

Fill both blanks to set the gas limit and gas price for deployment.

Blockchain / Solidity

tx = contract.deploy(gas=[1], gasPrice=[2])

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A3000000

B1000000000

C500000

D2000000000

Attempts:

3 left

💡 Hint

Common Mistakes

Setting gas limit too low causing deployment failure

Using incorrect gas price units

Gas limit is set to 3,000,000 and gas price to 1,000,000,000 wei for deployment.

5fill in blank

hard

Fill all three blanks to create a deployment script that compiles, deploys, and waits for confirmation.

Blockchain / Solidity

compiled = compiler.compile('[1]')
contract = blockchain.deploy(compiled)
tx_receipt = contract.tx.wait([2])
print('Contract deployed at:', contract.[3])

Drag options to blanks, or click blank then click option'

AMyContract.sol

B1

Caddress

DMyContract.py

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong file extension for the contract source

Not waiting for any confirmation

Printing an incorrect property instead of address

The script compiles MyContract.sol, waits for 1 confirmation, and prints the contract's address.