Backend Development with Node.js
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Questions and Answers

What is the primary role of backend development?

  • Designing web interfaces
  • Client-side scripting
  • Handling server-side logic and database communication (correct)
  • User experience enhancement

    • Node.js is a synchronous programming environment.

    False

    What is Express.js primarily used for?

    Backend development

    NPM stands for ______ and is used for managing packages in Node.js.

    <p>Node Package Manager</p> Signup and view all the answers

    The event loop in Node.js is responsible for executing callback functions when events occur.

    <p>True</p> Signup and view all the answers

    Which of the following is NOT a responsibility of backend development?

    <p>Designing the layout of web pages</p> Signup and view all the answers

    JavaScript is the primary programming language used with Node.js.

    <p>True</p> Signup and view all the answers

    Node.js can only handle one request at a time due to its single-threaded nature.

    <p>False</p> Signup and view all the answers

    What is the purpose of the 'require' function in Node.js?

    <p>To import modules or libraries into a Node.js application</p> Signup and view all the answers

    Match the following terms related to Node.js with their descriptions:

    <p>Event loop = Manages asynchronous operations NPM = Package manager for Node.js Express.js = Framework for backend development Process object = Provides information about the current Node.js process</p> Signup and view all the answers

    The 'process' object in Node.js allows interaction with the environment in which the process is running.

    <p>True</p> Signup and view all the answers

    Which feature is characteristic of Node.js?

    <p>Event-driven programming</p> Signup and view all the answers

    What does the 'setTimeout()' function do in Node.js?

    <p>Executes code after a specified delay</p> Signup and view all the answers

    JavaScript is a statically typed language.

    <p>False</p> Signup and view all the answers

    Which of the following is a valid way to declare a constant in JavaScript?

    <p>const pi = 3.14;</p> Signup and view all the answers

    Type coercion is the automatic conversion of values from one _____ to another.

    <p>data type</p> Signup and view all the answers

    What is the purpose of the 'global' object in Node.js?

    <p>To make variables accessible everywhere</p> Signup and view all the answers

    Which operator is used for strict equality comparison in JavaScript?

    <p>=== (triple equals)</p> Signup and view all the answers

    What does the 'parseInt()' function do in JavaScript?

    <p>Converts a string to an integer</p> Signup and view all the answers

    Match the following JavaScript terms with their descriptions:

    <p>let = Block-scoped variable var = Function-scoped variable switch = Conditional branching const = Immutable variable</p> Signup and view all the answers

    Study Notes

    Backend Development

    • Backend development handles server-side logic and communication with databases.
    • This is crucial for application functionality.

    Node.js

    • Node.js is a non-blocking, asynchronous programming environment.
    • It uses an event loop to handle multiple operations concurrently without waiting.

    NPM

    • NPM (Node Package Manager) is used for managing packages in Node.js.

    Event Loop

    • Node.js's event loop manages executing callback functions when events occur.

    Backend Responsibilities

    • Backend development does not include designing website layouts. This is a frontend responsibility.

    Primary Programming Language

    • JavaScript is the primary language used with Node.js.

    setTimeout Function

    • The setTimeout() function executes code after a specified delay.

    JavaScript Typing

    • JavaScript is dynamically typed, meaning variable types can change during execution.

    Constant Declaration

    • const is used for declaring constants in JavaScript.

    Type Coercion

    • Type coercion is the automatic/implicit conversion of data types in JavaScript.

    Global Object

    • The global object is accessible throughout a Node.js application.

    Strict Equality

    • === (triple equals) is used for strict equality comparison in JavaScript.

    parseInt Function

    • parseInt() converts a string representation of a number to an integer.

    let vs var

    • let declares a block-scoped variable, while var declares a function-scoped variable.

    Switch Statement

    • The switch statement in JavaScript is used for conditional branching.

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    Related Documents

    Foundations of Backend Development and Node.js Basics PDF

    Description

    Explore the essentials of backend development with a focus on Node.js. This quiz covers key concepts such as the event loop, NPM, and JavaScript's dynamic typing. Test your knowledge of server-side logic and how backend interacts with front-end responsibilities.

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