What does the HTML element represent?
- Defines a division or a section in an HTML document
- Defines a link
- Defines a table
- Defines an image
The
element in HTML represents a division or a section in an HTML document. It is a block-level container that can be used to group content for styling purposes or to create layout structures.
What is idempotency in the context of Infrastructure as Code?
- A strategy for load balancing in cloud environments
- Ensures that applying the same configuration multiple times produces the same result as applying it once
- Refers to the speed at which infrastructure changes are deployed
- The ability to scale infrastructure horizontally
Idempotency ensures that applying the same configuration multiple times produces the same result as applying it once. In Infrastructure as Code (IaC), this is crucial to maintaining consistency and avoiding unintended consequences.
The CSS margin property controls the _______ of an element.
- Alignment
- Padding
- Spacing
- Width
The CSS margin property controls the spacing of an element. It defines the space outside the element's border, providing separation from other elements.
What is memoization and how is it used for optimizing function performance in JavaScript?
- A design pattern for creating dynamic web components
- A method for encrypting sensitive data in JavaScript
- A technique to cache and reuse the results of expensive function calls
- An approach to asynchronous programming in JavaScript
Memoization is a technique in JavaScript used to cache and reuse the results of expensive function calls. By storing the results of expensive function calls and returning the cached result when the same inputs occur again, it helps optimize overall function performance.
What is the purpose of the this keyword in JavaScript?
- Refers to the current function's scope
- Refers to the current instance or object
- Refers to the global scope
- Refers to the parent function's scope
In JavaScript, the this keyword refers to the current instance or object. Its value depends on how a function is called and is often used in object-oriented programming.
_______ is a technique used to store copies of frequently accessed data in a faster storage location to improve access times.
- Caching
- Fragmentation
- Indexing
- Serialization
Caching is a technique that involves storing copies of frequently accessed data in a faster storage location, such as memory or a dedicated cache. This helps improve access times and overall system performance.
What role does Docker play in CI/CD pipelines?
- Cloud Computing
- Containerization
- Version Control
- Virtualization
Docker plays the role of containerization in CI/CD pipelines. It allows packaging applications and their dependencies into containers, ensuring consistency across different environments. This simplifies deployment, improves scalability, and enhances the reproducibility of the entire process.
How does containerization help in the deployment process?
- All of the above
- Consistency
- Isolation
- Portability
Containerization helps in the deployment process by ensuring consistency across different environments, providing isolation for applications, and offering portability, allowing containers to run consistently across various systems.
You're designing a new database system for a social media platform that requires high availability and scalability. Would you choose SQL or NoSQL, and why?
- Both SQL and NoSQL
- It depends on the specific requirements
- NoSQL
- SQL
For a social media platform with high availability and scalability needs, NoSQL databases are often preferred. They offer horizontal scalability and flexibility in handling diverse data types commonly found in social media applications.
Which design pattern separates the responsibilities of creating complex objects and the objects themselves?
- Abstract Factory
- Builder
- Prototype
- Singleton
The Builder design pattern separates the construction of a complex object from its representation. It allows the same construction process to create different representations, promoting flexibility and reusability.
Which meta tag is used to make a webpage responsive on various devices?
The correct meta tag for making a webpage responsive is . It configures the viewport settings, allowing the page to adapt to the device's width.
In large-scale web applications, which server-side language is often preferred for its scalability, support for microservices architecture, and compatibility with frameworks like Sinatra and Rails?
- Java
- Node.js
- Python
- Ruby
Ruby is often preferred in large-scale web applications for its scalability, support for microservices architecture, and compatibility with frameworks like Sinatra and Rails. Its elegant syntax and convention-over-configuration principle make it suitable for rapid development.
- Defines a division or a section in an HTML document
- Defines a link
- Defines a table
- Defines an image
The
element in HTML represents a division or a section in an HTML document. It is a block-level container that can be used to group content for styling purposes or to create layout structures.
What is idempotency in the context of Infrastructure as Code?
- A strategy for load balancing in cloud environments
- Ensures that applying the same configuration multiple times produces the same result as applying it once
- Refers to the speed at which infrastructure changes are deployed
- The ability to scale infrastructure horizontally
Idempotency ensures that applying the same configuration multiple times produces the same result as applying it once. In Infrastructure as Code (IaC), this is crucial to maintaining consistency and avoiding unintended consequences.
The CSS margin property controls the _______ of an element.
- Alignment
- Padding
- Spacing
- Width
The CSS margin property controls the spacing of an element. It defines the space outside the element's border, providing separation from other elements.
What is memoization and how is it used for optimizing function performance in JavaScript?
- A design pattern for creating dynamic web components
- A method for encrypting sensitive data in JavaScript
- A technique to cache and reuse the results of expensive function calls
- An approach to asynchronous programming in JavaScript
Memoization is a technique in JavaScript used to cache and reuse the results of expensive function calls. By storing the results of expensive function calls and returning the cached result when the same inputs occur again, it helps optimize overall function performance.
What is the purpose of the this keyword in JavaScript?
- Refers to the current function's scope
- Refers to the current instance or object
- Refers to the global scope
- Refers to the parent function's scope
In JavaScript, the this keyword refers to the current instance or object. Its value depends on how a function is called and is often used in object-oriented programming.
_______ is a technique used to store copies of frequently accessed data in a faster storage location to improve access times.
- Caching
- Fragmentation
- Indexing
- Serialization
Caching is a technique that involves storing copies of frequently accessed data in a faster storage location, such as memory or a dedicated cache. This helps improve access times and overall system performance.
What role does Docker play in CI/CD pipelines?
- Cloud Computing
- Containerization
- Version Control
- Virtualization
Docker plays the role of containerization in CI/CD pipelines. It allows packaging applications and their dependencies into containers, ensuring consistency across different environments. This simplifies deployment, improves scalability, and enhances the reproducibility of the entire process.
How does containerization help in the deployment process?
- All of the above
- Consistency
- Isolation
- Portability
Containerization helps in the deployment process by ensuring consistency across different environments, providing isolation for applications, and offering portability, allowing containers to run consistently across various systems.
You're designing a new database system for a social media platform that requires high availability and scalability. Would you choose SQL or NoSQL, and why?
- Both SQL and NoSQL
- It depends on the specific requirements
- NoSQL
- SQL
For a social media platform with high availability and scalability needs, NoSQL databases are often preferred. They offer horizontal scalability and flexibility in handling diverse data types commonly found in social media applications.
Which design pattern separates the responsibilities of creating complex objects and the objects themselves?
- Abstract Factory
- Builder
- Prototype
- Singleton
The Builder design pattern separates the construction of a complex object from its representation. It allows the same construction process to create different representations, promoting flexibility and reusability.
Which meta tag is used to make a webpage responsive on various devices?
The correct meta tag for making a webpage responsive is . It configures the viewport settings, allowing the page to adapt to the device's width.
In large-scale web applications, which server-side language is often preferred for its scalability, support for microservices architecture, and compatibility with frameworks like Sinatra and Rails?
- Java
- Node.js
- Python
- Ruby
Ruby is often preferred in large-scale web applications for its scalability, support for microservices architecture, and compatibility with frameworks like Sinatra and Rails. Its elegant syntax and convention-over-configuration principle make it suitable for rapid development.