AIS CH12 Multiple Choice

Which of the following best describes semi-supervised learning?

The training data contain some missing labels or incomplete data.

Which feature cannot be found in bitcoin? Double spend Anyone can join and leave the bitcoin network at any time Immutable history of transactions A new block is added every 10 minutes

Double spend

Which of the following is not true with respect to artificial intelligence? None of these is true. Al began in the 1990s. AI is a broad field in computer science . AI is intelligence exhibited by machines rather than humans AI is also called cognitive technologies

AI began in the 1990s.

Which of the following statement is false? Hyperledger is a public blockchain. Hyperledger is a permissioned blockchain with capabilities of handling smart contracts The main objective of Hyperledger is to achieve cross-industry collaboration with blockchain technology . Hyperledger is an open source blockchain platform created by the Linux foundation

Hyperledger is a public blockchain.

Which of the following best describes a confusion matrix? None of these choices are correct. It is a table summarizing the prediction results. It can be used to calculate other performance metrics. It has as many rows and columns as classifications to predict. All of these choices are correct.

It is a table summarizing the prediction results.

Which of the following best describes the difference between artificial intelligence and machine learning? None of these choices are correct. Machine learning is a subset of Al Machine learning only applies to deep learning algorithms. Al and machine learning are the same thing . Machine learning requires less data than

Machine learning is a subset of AI.

Which of the following best describes artificial neural networks? Training a neural network involves the use of real-world data Neural networks only have two layers. Neural networks consist of inputs, neurons or nodes, and outputs. None of these choices are correct . Deep learning is required for a neural network

Neural networks consist of inputs, neurons or nodes, and outputs.

Which of the following statements is true? Ethereum is a private blockchain. Smart contract was introduced in Ethereum Both permissioned and public blockchains need miners to determine which transaction block should be added next. Because blockchain transactions are stored in chronological order , you may trace a block from an earlier transaction block to the most recent block in the blockchain .

Smart contract was introduced in Ethereum

Which of the following best describes reinforcement learning?

The model learns by trial-and-error.

Which of the following best describes supervised learning? The training data contain missing labels or incomplete data. The training data only include input values None of these choices are correct . The training data contain input-output pairs. The training data match inputs to nodes in the network

The training data contain input—output pairs.

Which of the following best describes unsupervised learning?

The training data only include input values.

When we refer to smart contract in blockchain, we mean: a digital contract that can be distributed all to the participants with all terms defined. a piece of software code that can be executed or triggered by business activities. a contract that can be edited at any time for business rules. a digital copy of paper contract such as a Word file.

a piece of software code that can be executed or triggered by business activities.

A selected set of organizations may run a blockchain node separately for keeping the transaction records. Administrators from the organizations establish the access rights and permissions for each participant. This type of blockchain is often called: public blockchain consortium blockchain permissionless blockchain. private blockchain.

consortium blockchain.

Ben goes to his bank to wire transfer $1,000 to his sister Jennifer. The role of the bank in this transaction is best described as: A blockchain B middleman C consensus D miner

middleman.

In the Ethereum network:

mining of Ether occurs at a constant rate.