React makes use of a virtual _______ to efficiently update the DOM.
- Browser
- Component
- DOM
- Tree
React makes use of a virtual DOM to efficiently update the actual DOM. The virtual DOM is a lightweight copy of the real DOM, and changes are first made to the virtual DOM for faster updates.
What are some best practices for testing responsiveness across different devices and screen sizes?
- Conducting tests only during development, not considering user feedback, ignoring real-world scenarios
- Ignoring testing altogether, assuming responsiveness will work automatically, relying only on manual testing
- Testing only on one device, relying solely on emulators, neglecting testing on various screen sizes
- Using browser developer tools, utilizing online testing tools, conducting real device testing, and simulating different viewports
Best practices for testing responsiveness involve using browser developer tools, utilizing online testing tools, conducting real device testing, and simulating different viewports to ensure compatibility across a variety of devices and screen sizes.
NoSQL databases offer _______ scalability compared to traditional relational databases.
- Dynamic
- Horizontal
- Static
- Vertical
NoSQL databases offer Horizontal scalability compared to traditional relational databases. This means that the system can handle increased load by adding more nodes to the database.
GitHub Flow encourages _______ deployment of code changes to production.
- batch
- continuous
- manual
- scheduled
GitHub Flow encourages continuous deployment of code changes to production. This approach emphasizes regularly and automatically deploying smaller, incremental changes to ensure a more stable and agile development process.
The CSS _______ property is used to adjust the layout based on the available space.
- Display
- Flex
- Grid
- Position
The flex property in CSS is used to create a flexible container where the contained items can be dynamically adjusted to different sizes based on the available space. It is commonly employed in responsive design to create flexible and adaptive layouts.
In the context of database optimization, what does query optimization involve?
- Enhancing Query Performance
- Improving Database Security
- Minimizing Data Redundancy
- Optimizing Data Types
Query optimization in the context of database optimization involves improving the performance of database queries. This includes optimizing query execution plans, indexing, and other factors to enhance overall query performance.
During a code review, you notice that a colleague frequently introduces merge conflicts due to large, sweeping changes. How would you address this issue to improve collaboration and code stability in the project?
- Ignore the issue and let the colleague handle their approach to code changes.
- Implement strict branch control, limiting the number of branches for each developer.
- Provide constructive feedback, suggesting smaller, more frequent commits and communication about upcoming changes.
- Raise the concern in a team meeting, highlighting the impact on code stability.
Offering constructive feedback encourages a positive environment. Suggesting smaller, more frequent commits fosters better collaboration and reduces the likelihood of disruptive conflicts.
What is ACID in the context of database transactions?
- ACID stands for Aggregation, Consistency, Isolation, Distribution
- ACID stands for Association, Concurrency, Isolation, Dependency
- ACID stands for Atomicity, Consistency, Isolation, Durability
- ACID stands for Authentication, Compression, Integration, Durability
ACID in the context of database transactions stands for Atomicity, Consistency, Isolation, and Durability. It ensures reliable processing of database transactions even in the face of errors or failures.
In Infrastructure as Code, _______ describes the desired state of the infrastructure.
- Ansible
- Puppet
- Terraform
- YAML
In Infrastructure as Code (IaC), Terraform is commonly used to describe the desired state of the infrastructure. Terraform allows for the declarative definition of infrastructure, making it easier to manage and version control.
The _______ backup strategy involves backing up only data that has changed since the last backup.
- Differential
- Full
- Incremental
- Snapshot
The correct term is "Incremental." Incremental backup involves backing up only the data that has changed since the last backup, reducing the time and storage space required.