FREE Blockchain Decentralized Applications (dApps) Questions and Answers

Question 1

Which of the following is a core characteristic that distinguishes a Decentralized Application (dApp) from a traditional web application?

Accepted Answer

Its backend code runs on a decentralized network (blockchain) instead of a centralized server.

Answer

It uses a centralized database for storing user data but a decentralized front-end.

Answer

It requires a traditional web browser and standard HTTP/S protocols for interaction.

Answer

Its primary purpose is to provide static information without user interaction.

Question 2

A developer is building a dApp designed to manage digital collectibles (NFTs). What component is essential for defining the ownership, transferability, and unique properties of these collectibles within the dApp's ecosystem?

Accepted Answer

A smart contract deployed on a blockchain.

Answer

A traditional SQL database hosted on AWS.

Answer

A centralized API gateway for authentication.

Answer

A standard web server running Node.js.

Question 3

What is the primary advantage of a dApp being 'censorship-resistant'?

Accepted Answer

No single authority can prevent users from accessing or transacting with the application.

Answer

It can be easily shut down by a single government or entity.

Answer

It guarantees high transaction speed regardless of network congestion.

Answer

It automatically encrypts all user data without requiring user consent.

Question 4

When interacting with a dApp, what is typically used to manage a user's identity, digital assets, and sign transactions?

Accepted Answer

A cryptocurrency wallet (e.g., MetaMask, Trust Wallet).

Answer

A username and password stored on the dApp's central server.

Answer

A traditional bank account linked via a third-party payment gateway.

Answer

A government-issued digital ID stored in a centralized database.

Question 5

A dApp is experiencing slow transaction finality and high gas fees. Which component of the dApp architecture is most likely contributing to these issues?

Accepted Answer

The underlying blockchain network's congestion and design.

Answer

The dApp's front-end user interface.

Answer

The traditional cloud server hosting static assets.

Answer

The client-side JavaScript libraries used for UI rendering.

Question 6

Which of the following best describes the 'trustless' nature of a Decentralized Application (dApp)?

Accepted Answer

Users do not need to trust any central intermediary, as the rules are enforced by code on the blockchain.

Answer

Users must trust the dApp's developers to maintain its servers.

Answer

Users need to trust a central authority to arbitrate disputes.

Answer

Users are required to trust each other blindly for all interactions.