Web Development Basics Quiz

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which HTTP request method is primarily used to send data to the server to create or modify a resource?

OPTIONS

PUT (correct)

GET

HEAD

What type of HTTP polling involves a client maintaining a persistent connection with the server until new data is available?

Long polling (correct)

Conditional polling

Partial polling

Short polling

What does an HTTP status code in the 4xx range indicate?

Successful request

Server error

Redirection

Client error (correct)

Which HTML tag is used to provide alternative text for an image, primarily for screen readers?

<alt> Signup and view all the answers

What is the function of the CSS pseudo-element `::after`?

To insert content after the regular content of an element. Signup and view all the answers

What characteristic of JavaScript allows for implicit type conversion when mismatched types are encountered?

Its weakly typed nature. Signup and view all the answers

Which variable declaration keyword in JavaScript is block-scoped and allows reassignment of its value?

<code>let</code> Signup and view all the answers

When comparing two values in JavaScript, which operator performs type conversion before the comparison?

== Signup and view all the answers

Which of the following is the correct syntax for a ternary operator in JavaScript?

[condition] ? [value if true] : [value if false] Signup and view all the answers

In the context of RESTful API design, what does the principle of 'statelessness' mean?

The server does not retain client's state between requests. Signup and view all the answers

Which HTTP header is commonly used for providing authentication information in the HTTP Basic authentication scheme?

Authorization Signup and view all the answers

According to typical REST API endpoint rules, how should a collection of resources be represented in a URI?

Using plural nouns such as <code>/users</code>. Signup and view all the answers

Which of these is not a valid method for REST API authentication?

Cookie-based Signup and view all the answers

If given a string `"123.45"`, which JavaScript function would correctly convert this string to a floating point number?

<code>parseFloat()</code> Signup and view all the answers

What does the term 'code-on-demand' refer to in the context of RESTful APIs?

The server can send code upon request from client to reduce pre-implemented functionality. Signup and view all the answers

Which of the following best describes the primary function of middleware in an Express application?

To intercept and process requests and responses before they reach their final handlers. Signup and view all the answers

In the context of web application security, which of the following is NOT a common measure?

Bypassing user input validation Signup and view all the answers

What is the primary advantage of Node.js's asynchronous and event-driven architecture?

It enables tasks to work independently and in parallel, improving speed and scalability. Signup and view all the answers

Which of the following best describes the role of the 'Model' in the MVC architectural pattern?

To manage and perform all database-related logic. Signup and view all the answers

What is the key concept behind React's use of a virtual DOM?

To create a copy of the DOM in memory and update only the necessary changes. Signup and view all the answers

In React, what is the primary purpose of the `useEffect` hook?

To perform side effects (such as data fetching) that depend on certain values. Signup and view all the answers

Which of the following is NOT a typical advantage of using established design patterns?

Increased risk of introducing errors. Signup and view all the answers

What is the main difference between `require('fs')` and `require('http')` in Node.js?

<code>require('fs')</code> is for file system operations, while <code>require('http')</code> is for handling HTTP requests. Signup and view all the answers

Study Notes

HTTP Requests

Partial get request: retrieves a portion of information
Conditional get request: determines if a fresh copy from the server is needed
Head request: returns only the header data, not the body
Options request: specifies allowed HTTP methods
Put request: uploads documents to the server
Delete request: deletes data from the server

HTTP Polling Types

Short polling: client sends frequent small requests; server responds immediately
Long polling: client maintains a connection; server responds when new data is available

HTTP Status Codes

200: OK (request successful)
201: Created (resource created successfully)
204: No Content (request successful, no content to return)
401: Unauthorized (client not authenticated)
402: Payment Required
403: Forbidden (client lacks permission)
404: Not Found (resource not found)
500: Internal Server Error (server error)
1xx: Informational (server is processing the request)
2xx: Successful (request completed successfully)
3xx: Redirection (client needs to make a further request)
4xx: Client Error (client-side issue)
5xx: Server Error (server-side issue)

HTML

Hyperlinks: allow immediate activation of links
Meta tags: provide descriptions of HTML files
Viewport: defines a viewport for the HTML file
: emphasizes a particular meaning in a sentence
: emphasizes a term (e.g., technical term)
: highlights important information
: draws attention, but doesn't indicate importance

Other

: draws attention without indicating importance (HTML tag)
Self-closing HTML tags (e.g.,  )
Nested lists (<li> within <li>, <ol> within <ol>)
List types in <ol>, type=1, type=i
List starting points using start attribute
Reversed lists <ol reversed
Alternative text (alt) for screen readers

CSS

Pseudo-elements (::after): add content after existing content
rem vs em: different units of measurement in CSS

JavaScript

Dynamic vs. interpretive scripts
Weakly typed languages
Cross-platform capability
Automatic declaration styles vs redeclaration
var (less preferred) vs. const (block scoped)

REST APIs

Uniform interface
Unique URIs
Resource manipulation through representations
Hypermedia
Statelessness
Client-server architecture (separation between client and server which improves scalability)
Cacheability (responses can be marked cacheable to improve performance)
Layered system
Code-on-demand
Design patterns in React, MVC, Model, View, Controller, and virtual DOM
useState vs useEffect

Node.js and Express

Node.js execution environment in Chrome’s JavaScript runtime (speed and efficiency)
Asynchronous and event-driven (speeds up tasks)
Highly scalable and non-blocking operation

Design Patterns and Frameworks

Why use existing design patterns? (saves time and effort, reduces errors)
Design pattern benefits
Provide clear steps for solutions to common problems.
Useful real-world scenarios

React (JavaScript Framework)

Virtual DOM (lightweight in-memory representation of the actual DOM)
useState for declaring variables affected by state changes
useEffect for writing code with data dependencies

WebSockets

HTTP limitations (server intensity, message ordering, and latency)
WebSockets benefits (increased bandwidth, reduced latency, improved scalability)

Security Considerations

Authentication and authorization
HTTPS (SSL/TLS)
Cross-Origin Resource Sharing (CORS)
Token expirations and refresh
Input validation
Output encoding
Rate limiting

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge of web development concepts with this quiz covering HTTP methods, polling techniques, HTML tags, and CSS. Challenge yourself to understand how these components interact to create dynamic web experiences.