In GraphQL, the _____ defines the operations that can be performed to access the data.
- Server
- Resolver
- Schema
- Query
In GraphQL, the "Schema" defines the operations that can be performed to access the data. The schema specifies the types of data that can be queried and the structure of those queries.
During stress testing, its vital to monitor system parameters like CPU usage, memory usage, and ______ to evaluate performance under stress.
- Network latency
- Software licensing
- User satisfaction
- Battery life
During stress testing, it's important to monitor system parameters like CPU usage, memory usage, and network latency. This allows for a comprehensive evaluation of the system's performance under stress, including how it handles network-related challenges.
How does the Maintainability Index (MI) provide insights into the future perspectives of a software product?
- MI assesses project budget
- MI measures code complexity and maintainability
- MI evaluates user satisfaction
- MI predicts market demand
The Maintainability Index (MI) provides insights into the future perspectives of a software product by measuring code complexity and maintainability. A higher MI score indicates that the code is easier to maintain, reducing the cost and effort required for future enhancements or bug fixes.
What is a key benefit of software re-engineering in relation to system performance?
- Improved user interface
- Enhanced security
- Increased speed and efficiency
- Better hardware compatibility
Software re-engineering can lead to increased speed and efficiency. By optimizing and modernizing software, it can run faster and more efficiently, improving system performance. This can involve optimizing code, upgrading data structures, and other enhancements.
How does denormalization in databases affect data retrieval times?
- It slows down data retrieval
- It has no impact on data retrieval
- It speeds up data retrieval
- It causes data corruption
Denormalization in databases can speed up data retrieval times because it reduces the need for complex joins and queries. However, it can lead to increased storage requirements and potential data inconsistencies, so it should be used judiciously.
Prototyping can be particularly useful in Agile development when the customer is unsure about the _______ of the system.
- Cost
- Deadline
- Functionality
- Scope
Prototyping is especially valuable in Agile development when the customer is uncertain about the "Functionality" of the system. It allows customers to see and interact with a partial system, making it easier to refine and clarify requirements as the project progresses.
What does the reliability quality attribute signify in the context of software?
- Speed of the software
- Security of the software
- Trustworthiness and consistency of the software
- Adaptability of the software
Reliability, in the context of software, signifies the trustworthiness and consistency of the software. A reliable software system performs its functions consistently and without unexpected failures, providing a dependable user experience.
RESTful APIs use HTTP requests to POST, READ, PUT, and DELETE data, often referred to as ______ operations.
- Update
- Edit
- Modify
- Update
In RESTful API design, these operations are often referred to as "CRUD" operations, which stands for Create, Read, Update, and Delete. The "Modify" operation corresponds to the "Update" operation in CRUD.
In a context where a software system is expected to store and manage highly sensitive user data, how would the security attribute be defined and assured throughout the development process?
- Security is not necessary when dealing with sensitive data
- Security should be a one-time implementation
- Security must be a continuous concern throughout development
- Security is the sole responsibility of users
In this context, security must be a continuous concern throughout the development process. Sensitive user data requires robust security measures, including encryption, access controls, and vulnerability assessments. Security must be implemented from the project's start and maintained as threats evolve.
Which design pattern restricts the instantiation of a class to a single instance and provides a global point of access to it?
- Factory Pattern
- Singleton Pattern
- Observer Pattern
- Abstract Factory Pattern
The Singleton design pattern restricts the instantiation of a class to a single instance. It provides a global point of access to that instance, making it useful when you want to ensure there's only one instance of a class throughout your application, like a configuration manager, a database connection, or a logging service.