Which tool in Browser Developer Tools is used to analyze the performance of a web page?
- Application
- Console
- Elements
- Performance
The "Performance" tool in Browser Developer Tools is used to analyze the performance of a web page. It provides a timeline of events, helping developers identify bottlenecks and optimize page speed.
Which front-end framework allows developers to build interactive user interfaces using HTML templates and JavaScript?
- Angular
- Bootstrap
- React
- Vue.js
Vue.js allows developers to build interactive user interfaces using HTML templates and JavaScript. It is known for its simplicity and ease of integration.
A code review checklist often includes items related to _______ , ensuring consistency and adherence to best practices.
- Coding standards
- Feature requirements
- Project deadlines
- Team meetings
A code review checklist often includes items related to coding standards, ensuring consistency and adherence to best practices across the codebase. By following established coding standards, developers can write maintainable, readable, and efficient code, which ultimately benefits the project's quality and scalability.
When resolving a merge conflict in Git, it's essential to communicate and collaborate with _______ to ensure the changes are correctly integrated.
- All contributors
- Code reviewer
- Project manager
- Team members
When resolving a merge conflict in Git, it's essential to communicate and collaborate with team members to ensure the changes are correctly integrated. Collaboration is crucial to understanding conflicting changes and finding the best resolution.
How does MongoDB handle relationships between data?
- Embedding and Referencing
- Indexing
- Joins
- Sharding
MongoDB handles relationships between data through embedding and referencing. Embedding involves storing related data within the same document, while referencing involves using references to link documents.
You're designing an application that requires finding the shortest path between two nodes in a graph. Which algorithm would you choose and why?
- A* Algorithm
- Breadth-First Search (BFS)
- Depth-First Search (DFS)
- Dijkstra's Algorithm
Dijkstra's Algorithm is the preferred choice for finding the shortest path in a graph. It guarantees the shortest path in weighted graphs, making it suitable for scenarios where accurate distance calculations are crucial, such as network routing.
How does CDN (Content Delivery Network) utilize caching for performance optimization?
- Caches content on multiple servers globally
- Disables caching for faster content retrieval
- Relies solely on client-side caching
- Utilizes a single server for caching
CDNs cache content on multiple servers globally, reducing latency by serving content from the nearest server to the user. This optimizes performance by minimizing the distance data travels.
Which type of database is best suited for hierarchical data storage?
- Document Database
- Graph Database
- NoSQL
- Relational Database
A graph database is best suited for hierarchical data storage. It represents data in the form of nodes and edges, making it efficient for storing and querying hierarchical relationships.
You're leading a team to develop a microservices-based web application. Which server-side language and framework combination would you recommend, and what are the advantages?
- Java with Spring Boot
- Node.js with Express.js
- Python with Flask
- Ruby on Rails
For a microservices-based web application, Java with Spring Boot is a robust choice. Spring Boot provides a well-structured and modular framework for building microservices, ensuring scalability and maintainability.
You notice a sudden spike in error rates in your application logs. How would you investigate the cause and take appropriate action?
- Analyze the error patterns, identify recent changes, and check dependencies
- Disable error logging temporarily
- Ignore the spike unless users report issues
- Increase server capacity to handle errors
When facing a sudden spike in error rates, analyze error patterns, identify recent changes in the codebase or configuration, and check dependencies for issues. This proactive approach helps pinpoint the cause and take appropriate action. Ignoring the spike or increasing server capacity without investigating the root cause is a reactive strategy that may not address the underlying issue. Disabling error logging temporarily hinders troubleshooting efforts.