FREE Solidity (Web Dev) MCQ Question and Answers

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What language is used to create smart contracts?

Correct! Wrong!

Explanation:
The fact that Solidity is cross-platform interoperable is one of its best features. But the majority of Solidity-based smart contracts that programmers build will be deployed on the Ethereum network. The language can be used to create a variety of applications, such as multi-signature wallets, voting systems, blind auctions, and crowdfunding initiatives.

What are dApps similar to?

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Explanation:
These are essentially the same apps that people use every day, but they are built on the Ethereum blockchain. As a result, dApps also inherit the characteristics of the Ethereum blockchain.

What do Solidity arrays hold, depending on their size?

Correct! Wrong!

Explanation:
One member in an array can be removed using the Solidity removes from the array function. Arrays can be compile-time fixed or dynamic. The array's length is unaffected by the elimination of an element. Instead, the array develops a gap. Infinite arrays are supported by Solidity.

What are two types of functions in Solidity?

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Explanation:
There are two sorts of functions that can be created while using Solidity: internal and external. An external function can be called from any contract, but an internal function can only be called from within. Both kinds of functions pass parameters by using pointers to memory. Pointers to memory are supplied as array arguments to an internal function, whereas local variables are always passed as arguments to an external function.

What is the name of the property that you can use to delete elements from an array?

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Explanation:
The delete method moves elements to the left or right before removing them from an array. The array's lowering length attribute can also be used to remove elements. This approach offers some extra advantages. Additionally, it acts differently than the other techniques by erasing named elements and element characteristics in a permanent manner. Use caution when using this function to remove elements from an array.

What is a programming language that Solidity is similar to?

Correct! Wrong!

Explanation:
Solidity is an object-oriented, high-level programming language that shares many features with JavaScript and also has some with C++ and Python. On the blockchain, it is mostly employed to develop and automate smart contracts.

What kind of testing does a Solidity developer need to do?

Correct! Wrong!

Explanation:
To determine whether the feature you designed is functional or not, unit testing is done.

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