In AWS, _______ is a service for scalable storage in the cloud.
- Amazon S3
- EC2
- Elastic Beanstalk
- Lambda
In AWS, Amazon S3 (Simple Storage Service) is a scalable storage service in the cloud. It allows users to store and retrieve any amount of data at any time. S3 is commonly used for backup, archiving, content distribution, and data storage for web applications.
Continuous Integration is the practice of _______ code changes frequently into a shared repository.
- analyzing
- deploying
- documenting
- integrating
Continuous Integration is the practice of integrating code changes frequently into a shared repository. This ensures that multiple developers can collaborate efficiently and catch integration issues early in the development process.
Which HTTP method is typically used for retrieving data from a RESTful API?
- DELETE
- GET
- POST
- PUT
The HTTP method used for retrieving data from a RESTful API is GET. It is a safe and idempotent method that requests a representation of the specified resource.
What is the purpose of the try...catch statement in JavaScript?
- To create a conditional statement
- To declare a function
- To define a loop
- To handle exceptions and errors
The try...catch statement in JavaScript is used to handle exceptions and errors. It allows you to gracefully manage and recover from unexpected runtime errors.
What is the purpose of the Singleton design pattern?
- Ensures a class has only one instance and provides a global point to it
- Implements a one-to-many dependency between objects
- Manages the creation of objects in a hierarchy
- Represents a way to access elements of an aggregate object sequentially
The Singleton design pattern ensures that a class has only one instance and provides a global point of access to it. This is useful when exactly one object is needed to coordinate actions across the system.
Two-factor _______ adds an extra layer of security to authentication.
- Authentication
- Authorization
- Encryption
- Verification
Two-factor authentication adds an extra layer of security to the authentication process. It typically involves something the user knows (password) and something the user has (a code sent to their mobile device), enhancing security.
Which CSS property is commonly used to improve rendering performance by minimizing layout recalculations?
- display
- position
- transform
- transition
The transform property in CSS is commonly used to improve rendering performance by minimizing layout recalculations. It enables developers to apply 2D and 3D transformations to elements without triggering costly repaints or reflows. This can significantly enhance the performance of web pages, especially during animations.
Browser Developer Tools provide a _______ view of the Document Object Model (DOM).
- Graphical
- Hierarchical
- Linear
- Tabular
Browser Developer Tools provide a hierarchical view of the Document Object Model (DOM). This view helps developers understand the structure and relationships of HTML elements on a webpage.
In OOP, a class is a blueprint for creating _______.
- Functions
- Instances
- Modules
- Objects
In Object-Oriented Programming (OOP), a class is a blueprint for creating objects. Objects are instances of a class and encapsulate both data (attributes) and behavior (methods) related to that class.
Which attribute is used to provide an alternative text for an image in HTML?
- alt
- href
- src
- title
The alt attribute is used to provide alternative text for an image in HTML. This text is displayed if the image fails to load or for accessibility purposes, allowing screen readers to describe the image to visually impaired users.