What is the primary purpose of database normalization?
- To create complex queries
- To increase data redundancy and improve data integrity
- To reduce data redundancy and improve data integrity
- To speed up data retrieval
The primary purpose of database normalization is to reduce data redundancy and improve data integrity. It involves organizing data in a way that minimizes duplication and dependency.
You have a microservices architecture with multiple Docker containers. How would you ensure high availability and fault tolerance using Kubernetes?
- Implement Docker Swarm for container orchestration
- Manually restart containers in case of failure
- Rely on the default settings for automatic high availability
- Use Kubernetes Deployments with multiple replicas
To ensure high availability and fault tolerance in a microservices architecture with Docker containers, Kubernetes Deployments are used. They allow you to define and manage multiple replicas of your application, ensuring that it runs across multiple nodes, minimizing downtime and increasing resilience.
Which tool is primarily used for container orchestration in Kubernetes?
- Ansible
- Docker Compose
- Docker Swarm
- Kubernetes
Kubernetes is the primary tool used for container orchestration in the context of Docker containers. It automates the deployment, scaling, and management of containerized applications, providing a robust and scalable solution for container orchestration.
Which of the following elements is used to create a hyperlink in HTML?
In a project requiring extensive database interactions and rapid development, which server-side language would provide the most suitable environment, and why?
- Java
- PHP
- Python
- Ruby on Rails
Ruby on Rails is a strong choice for projects with extensive database interactions and a need for rapid development. Its convention over configuration (CoC) and Don't Repeat Yourself (DRY) principles enhance productivity in database-driven projects.
What role does indexing play in query optimization?
- Adds redundancy to the database
- Improves search performance by providing faster access to data
- Reduces data integrity
- Slows down query execution
Indexing plays a crucial role in query optimization by improving search performance. Indexes provide faster access to specific rows in a table, reducing the time it takes to retrieve data and optimizing query execution.
What is one potential risk associated with live data migration?
- Data Consistency Issues
- Data Corruption
- Data Duplication
- Downtime
One potential risk associated with live data migration is the possibility of data corruption. During the migration process, there is a chance that data may become corrupt or incomplete, leading to inconsistencies and potential issues in the new system. This risk underscores the importance of thorough planning and testing to minimize such occurrences.
Which JavaScript framework is preferred for its simplicity and performance, focusing on the view layer of web applications?
- Angular
- Backbone.js
- React
- Vue.js
Vue.js is preferred for its simplicity and performance, focusing on the view layer of web applications. It is easy to integrate and suitable for both small and large-scale projects.
What is the primary purpose of monitoring in software development?
- Code compilation
- Feature development
- Identify and resolve issues
- User interface design
The primary purpose of monitoring in software development is to identify and resolve issues. Monitoring involves observing the performance and behavior of a system to detect and address any abnormalities, ensuring the software functions optimally. It plays a crucial role in maintaining system health and preventing potential problems.
Which tool provides a platform for project management, code review, and continuous integration/continuous deployment (CI/CD) pipelines?
- GitLab
- JIRA
- Jenkins
- GitHub
GitLab is the correct option. It is an integrated tool that offers capabilities for project management, code review, and CI/CD pipelines. GitLab facilitates end-to-end collaboration and automation throughout the software development lifecycle.