What is the role of consistency level in distributed databases like Cassandra?
- Defines the uniqueness of values in a column
- Determines how up-to-date a read is required to be
- Manages the order of write operations
- Specifies the type of database consistency
The consistency level in distributed databases like Cassandra determines how up-to-date a read must be. It allows users to balance between the consistency and availability of the data in a distributed environment.
Browser Developer Tools allow you to simulate various _______ conditions for testing purposes.
- Network
- Device
- Security
- Performance
Browser Developer Tools allow you to simulate various device conditions for testing purposes. This includes options to emulate different devices, screen sizes, and resolutions for responsive design testing.
What is normalization in the context of relational databases?
- Process of adding data to a database
- Process of deleting unnecessary data
- Process of organizing data to reduce redundancy and dependency
- Process of updating database schema
Normalization in the context of relational databases is the process of organizing data to reduce redundancy and dependency, ensuring data integrity and minimizing data anomalies.
Collaborative code review is an essential feature of _______ platforms, enabling developers to provide feedback on each other's code changes.
- Code Hosting
- Continuous Integration (CI)
- Integrated Development Environment (IDE)
- Version Control System (VCS)
Collaborative code review is an essential feature of Code Hosting platforms, enabling developers to provide feedback on each other's code changes. This process helps maintain code quality and catch potential issues early.
What is the purpose of caching strategies in web applications?
- Adding security layers to web applications
- Designing user interfaces
- Enhancing performance and reducing server load
- Managing user authentication
Caching strategies in web applications serve the purpose of enhancing performance and reducing server load. They involve decisions on what to cache, when to expire cache, and how to handle dynamic content.
Your application requires flexible schemas and the ability to store hierarchical data. Which NoSQL database would you recommend and why?
- Cassandra
- MongoDB
- Neo4j
- Redis
MongoDB is a document-oriented NoSQL database that supports flexible schemas and is well-suited for storing hierarchical data. Its BSON (Binary JSON) format allows for efficient representation of complex structures.
Normalization helps reduce _______ and dependency issues in a database.
- Performance
- Redundancy
- Scalability
- Security
Normalization helps reduce Redundancy in a database by organizing data to eliminate duplicate entries. It also addresses dependency issues.
You're working on a team project where multiple developers are contributing code. Describe how you would use OOP concepts like encapsulation and abstraction to ensure code integrity and modularity.
- Abstraction for security and Encapsulation for modularity
- Encapsulation to hide internal details and Abstraction to reduce complexity
- Inheritance for code sharing and Polymorphism for flexibility
- Inheritance for encapsulation and Polymorphism for modularity
Encapsulation hides the internal details of a class, ensuring code integrity, while Abstraction reduces complexity by providing a simplified interface. This combination enhances code modularity in a collaborative development environment.
The command "git bisect" is used for _______ debugging in Git.
- Binary
- Binary Search
- Bisect
- Incremental
The command "git bisect" is used for incremental debugging in Git. It helps locate the commit that introduced a bug by performing a binary search through the commit history. Developers mark good and bad commits, and Git efficiently narrows down the problematic commit.
Your company is migrating its infrastructure to the cloud. How would you design a robust monitoring and logging strategy to support this transition and ensure visibility into the new environment?
- Continue using on-premise tools for consistency
- Disable monitoring during migration for performance reasons
- Implement cloud-native monitoring and logging solutions
- Rely on the cloud provider's default monitoring services
When migrating to the cloud, it's essential to implement cloud-native monitoring and logging solutions. These tools are optimized for cloud environments, providing better visibility, scalability, and integration capabilities. Continuing to use on-premise tools may not adapt well to the dynamic cloud environment. Relying solely on the cloud provider's default monitoring services may lack customization. Disabling monitoring during migration poses a risk of missing crucial insights into performance and issues.
What are the differences between the Observer and Publisher-Subscriber design patterns?
- Both patterns follow the same implementation structure
- Observer pattern involves a subject and multiple observers, while Publisher-Subscriber involves multiple publishers and multiple subscribers
- Observer pattern is used in event handling, while Publisher-Subscriber is used in UI components
- Terms are used interchangeably
The key difference lies in the relationship structure. The Observer pattern involves a one-to-many relationship, while Publisher-Subscriber involves a many-to-many relationship between publishers and subscribers.
Which of the following is NOT a benefit of using Infrastructure as Code?
- Enhanced Collaboration
- Improved Version Control
- Increased Scalability
- Manual Configuration
Manual Configuration is not a benefit of using Infrastructure as Code. IaC aims to automate and streamline the process, reducing manual intervention and potential errors associated with manual configurations.