Ethereum Quiz: do you know the blockchain? Take the Test!

Ethereum Quiz: test your knowledge about the technology and ETH currency!

Ethereum is a decentralized blockchain platform created in 2015 by Vitalik Buterin. It is based on the principles of blockchain technology and is designed to facilitate the creation and execution of smart contracts and decentralized applications (dApps). Ethereum is often described as a "world computer" because it allows developers to build and deploy applications on a decentralized network. One of the key features of Ethereum is its ability to create and execute smart contracts: self-executing contracts with the terms of the agreement between buyer and seller written directly into the lines of code. The code and the agreements in it exist on the Ethereum blockchain, which means they are immutable and cannot be changed, making smart contracts a powerful tool for creating secure, transparent and decentralized applications. Ethereum's native cryptocurrency is called Ether (ETH). Ether is used to pay transaction fees on the Ethereum network and is also used as a store of value and medium of exchange. Ether is the second largest cryptocurrency by market capitalization, after Bitcoin. The key difference with Bitcoin is that Ether allows for the creation of applications that are executed and stored on the blockchain itself, which is the origin of, among other things, decentralized finance (DeFi). One of the key advantages of Ethereum is its flexibility. Developers can use the Ethereum platform to build a wide range of decentralized applications, including financial applications, gaming platforms, social networks and more. Ethereum's flexibility is due to its use of a programming language called Solidity, a high-level language designed to facilitate the writing of smart contracts and NFTs (Non Fungible Tokens). Ethereum's flexibility has led to the creation of a vibrant ecosystem of developers and entrepreneurs; thousands of decentralized applications have been built on the Ethereum platform and new ones are being created all the time. Many of these applications are designed to disrupt traditional industries, such as finance, insurance, and gaming. As mentioned, one of the most popular applications built on the Ethereum platform is called Decentralized Finance (DeFi). DeFi refers to a set of financial applications built on a decentralized network. These applications are designed to be more transparent, accessible, and open than traditional financial services. DeFi applications include decentralized exchanges, lending platforms, and insurance products. Another important feature of Ethereum is its ability to create and implement non-fungible tokens (NFTs). NFTs are unique, nonreplicable digital assets. They can be used to represent anything from art and music to virtual real estate and gaming objects. The use of NFTs has exploded in popularity in recent years, with millions of dollars spent on them in online marketplaces. Despite its many advantages, Ethereum faces some challenges. One of the most significant challenges is scalability. Ethereum has experienced congestion problems on its network due to the increasing number of transactions and applications built on the platform. This has led to increases in transaction costs and delays in confirming transactions. To address these scalability issues, Ethereum has developed a new version called Ethereum 2.0, launched in 2022, which uses a technology called Proof of Stake (PoS) to confirm transactions on the network instead of the Proof of Work (PoW) technology currently used. PoS requires fewer computational resources and should increase the scalability of the network. Another challenge for Ethereum is competition from other blockchain platforms. There are many other platforms that offer similar functionality to Ethereum, including Binance Smart Chain, Cardano, and Solana. These platforms seek to attract developers and entrepreneurs with lower transaction costs and greater scalability. Despite these challenges, Ethereum remains one of the most popular and influential blockchain platforms in the world. Its vibrant and ever-expanding ecosystem has led to many innovative developments and the adoption of new technologies. Ethereum continues to lead the blockchain revolution and open up new possibilities for the digital future.