Crypto and Blockchain Chapter 1

What is the primary focus of the application layer in a software system?

• User needs

• Technical implementation

• System integrity

• Data security

Which of the following is NOT a non-functional aspect of a software system?

• Security

• Reliability

• Booking a hotel room

• Performance

Aiden is working on a project that involves managing sensitive data for his school. What is a key element of system integrity that ensures the data remains accurate and unaltered?

• Data integrity

• System architecture

• User authentication

• Distributed consensus

In a school project, Jackson and Noah designed a system for managing student records. They wanted to ensure that the system could continue operating even if one part of it, like the database or the user interface, failed. What type of software architecture should they use?

• Centralized

• Distributed

• Layered

• Monolithic

What is the core problem that the blockchain aims to solve?

• Centralized control of data

• Slow transaction speeds

• Achieving integrity in a distributed peer-to-peer system with unknown peers

• Lack of user privacy

What is the most prominent application case for blockchain technology discussed in the source?

• Secure messaging

• Data storage

• Managing ownership

• Artificial intelligence

Which security concept involves verifying the identity of a user or entity?

• Identification

• Authentication

• Authorization

• Encryption

What is the purpose of a transaction in the context of blockchain?

• To store data securely

• To describe a transfer of ownership

• To solve a hash puzzle

• To validate a block

Separating the user's needs from the technical details of a system leads to a distinction between the (a)   layer and the implementation layer.

A (a)   is a record of transactions that helps establish and track ownership of assets or goods.