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> (A) 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. (C) Signup and view all the answers

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

Its weakly typed nature. (D) Signup and view all the answers

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

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

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

== (A) 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] (B) 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. (D) Signup and view all the answers

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

Authorization (B) 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>. (B) Signup and view all the answers

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

Cookie-based (A) 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> (A) 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. (C) 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. (A) 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 (C) 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. (D) 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. (C) 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. (C) 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. (D) 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. (B) 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. (B) Signup and view all the answers

Flashcards

Short Polling

A client sends small, frequent requests to the server, expecting an immediate response. This is useful for scenarios where real-time updates are needed, but frequent requests might burden the server.

Long Polling

A client maintains an open connection with the server, waiting for the server to send new data. This is more efficient than short polling, but requires the client to hold the connection until the server responds.

HEAD Request

An HTTP request asking for only the headers of a resource, without downloading the actual content. This is useful for checking if a resource exists or getting information about it without retrieving the entire data.

PUT Request

An HTTP method that allows a client to create a new resource on the server. This is typically used for creating new entries in a database or uploading files.