Reference no: EM133175723
1. Below are the reasons we need a third party in a transaction, except
A. Third-party provides resolution for conflict between parties
B. Practicality for the parties
C. Third-party provides a free platform for transaction
D. Third-party verify the transaction
2. Below are the reasons why the third party can be disadvantageous
A .Any breach to their system could expose the client's private data
B. They always check the validity of the transaction for safety
C. They offer services that make the transaction faster and more practical
D. They always update their system to keep up with vulnerability issues
3. In a blockchain, data is stored in
A. Chains
B. Blocks
C. Servers around the world
D. Miners
4. A full node is best described as
A. A computer that saves a copy of the blockchain
B. A computer which eligible to add new blocks into the blockchain
C. A server which full of transaction data
D. A server that initiates a new transaction
5. If we send digital assets such as cryptocurrency to the wrong address, it is considered lost because
A. The asset cannot be bound to the correct address and the data will be deleted
B. Because of the wrong address, it is impossible to track where the asset might be
C. The data will bounce between sender and receiver forever
D. Only the owner of the private key related to the address can move back the asset, which is unknown
6. A smart contract can be defined as
A. A small program runs on the blockchain
B. A small program stored in a server and automatically executed
C. Parts of a program stored in servers around the world
D. A small program dedicated to checking the validity of a transaction
7. Below are some advantages of blockchain-based smart contracts, except
A. The contract is immutable
B. The contract always executes actions once conditions are met
C. The contract is stored in the company's cloud
D. The contract is stored in the nodes around the world
8. Which of the following statement is false?
A. Blockchain provides a platform for a decentralized system
B. Blockchain provides a platform for autonomous systems
C. Blockchain provides a platform to save assets such as USD, paintings, and gold bars
D. Blockchain provides a platform for cryptocurrency transactions
9. Which of the following assets can be categorized as NFT?
A. Cryptocurrencies such as Bitcoin and Ethereum
B. A smart contract
C. A digital document of a birth certificate
D. Fiat money such as US$
10. Which of the following statement is false?
A. A person should always use a real ID in the metaverse
B. A person can have a completely different avatar compared to the real-life
C. NFT can be used to uniquely identify assets in the metaverse
D. Cryptocurrency can be used as money in the metaverse