Local Storage and CRUD Quiz

To pass the quiz, you must correctly answer at least 18 of the 20 questions below. # --quizzes-- ## --quiz-- ### --question-- #### --text-- What does CRUD stand for in the context of web development? #### --distractors-- Create, Replace, Undo, Delete. --- Connect, Remove, Update, Display. --- Copy, Retrieve, Update, Delete. #### --answer-- Create, Read, Update, Delete. ### --question-- #### --text-- Which HTTP method is commonly associated with the Create operation in a RESTful API? #### --distractors-- `GET` --- `PUT` --- `DELETE` #### --answer-- `POST` ### --question-- #### --text-- Which of the following CRUD operations is typically performed when modifying an existing record in a database? #### --distractors-- Read --- Delete --- Create #### --answer-- Update ### --question-- #### --text-- What is the main difference between localStorage and sessionStorage in the Web Storage API? #### --distractors-- localStorage stores data in memory, while sessionStorage stores data on the disk. --- sessionStorage is faster than localStorage for retrieving data. --- localStorage data is only available during a session, while sessionStorage persists across sessions. #### --answer-- localStorage data persists until explicitly deleted, while sessionStorage data is cleared when the page session ends. ### --question-- #### --text-- Which method is used to store data in localStorage? #### --distractors-- `localStorage.setData()` --- `localStorage.saveItem()` --- `localStorage.storeData()` #### --answer-- `localStorage.setItem()` ### --question-- #### --text-- How can you remove a single item from sessionStorage? #### --distractors-- `sessionStorage.clearItem('key')` --- `sessionStorage.remove('key')` --- `sessionStorage.deleteItem('key')` #### --answer-- `sessionStorage.removeItem('key')` ### --question-- #### --text-- What is the difference between `PUT` and `PATCH`? #### --distractors-- `PUT` modifies specific fields, while `PATCH` replaces the entire resource. --- `PUT` only adds new resources, while `PATCH` updates existing ones. --- `PUT` is used for retrieving data, while `PATCH` is used for sending data. #### --answer-- `PUT` replaces the entire resource, while `PATCH` updates specific fields. ### --question-- #### --text-- What is the cache storage used for? #### --distractors-- Cache storage is used to permanently store user credentials securely in the browser for authentication purposes. --- Cache storage is used to store large volumes of structured data in the browser using a database system. --- Cache storage is used to track user sessions and preferences by storing key-value pairs accessible across multiple websites. #### --answer-- Cache storage is used to store frequently requested network resources, reducing load times and improving performance. ### --question-- #### --text-- What is a cookie in the context of web development? #### --distractors-- A type of HTTP request. --- A piece of code that runs in the browser. --- A method to store large files on a server. #### --answer-- A small piece of data stored by the user's web browser. ### --question-- #### --text-- Which of the following methods is used to manually set a cookie in JavaScript? #### --distractors-- `document.setCookie` --- `document.cookie.set` --- `document.createCookie` #### --answer-- `document.cookie` ### --question-- #### --text-- Which of the following code snippets correctly deletes a cookie named `username`? #### --distractors-- `document.cookie.delete("username");` --- `document.removeCookie("username");` --- `cookie.delete("username");` #### --answer-- `document.cookie = "username=; expires=Thu, 01 Jan 1970 00:00:00 UTC; path=/;";` ### --question-- #### --text-- Which of the following statements about cookies is false? #### --distractors-- Session cookies expire when the browser is closed. --- HttpOnly cookies cannot be accessed by JavaScript. --- Secure cookies are only transmitted over HTTPS. #### --answer-- Cookies can only be set by the server. ### --question-- #### --text-- What is browser fingerprinting? #### --distractors-- A technique used in identifying users based on their IP address. --- A form of data encryption. --- A method of storing data in the browser's cache. #### --answer-- A way of tracking users through browser and device attributes. ### --question-- #### --text-- What is a primary risk associated with storing passwords in local storage? #### --distractors-- Local storage data is deleted once you close the browser tab. --- Local storage data is lost once you delete cookies. --- Local storage doesn't work offline. #### --answer-- Local storage is not encrypted and can be accessed easily. ### --question-- #### --text-- What of the following statements is true about client-side storage? #### --distractors-- Client-side storage uses objects instead of strings to store data. --- Client-side storage uses cloud services to sync user data across multiple devices. --- Client-side storage is more secure than server-side storage. #### --answer-- Client-side storage allows websites to store data on a user's device. ### --question-- #### --text-- What is the primary benefit of using IndexedDB over localStorage? #### --distractors-- IndexedDB does not require user consent for data storage. --- IndexedDB has a simpler API. --- IndexedDB is supported in all web browsers. #### --answer-- IndexedDB can handle larger amounts of data and more complex queries. ### --question-- #### --text-- Which of the following is a valid way to retrieve data from an object store in IndexedDB? #### --distractors-- Calling `retrieve()` on the object store. --- Using `query()` to access specific records. --- Using `fetch()` method. #### --answer-- Using `get()` on the store reference. ### --question-- #### --text-- What type of transactions does IndexedDB support? #### --distractors-- Read transactions only. --- Asynchronous transactions only. --- Synchronous transactions only. #### --answer-- Read and write transactions. ### --question-- #### --text-- Which of the following is true about the lifecycle of a Service Worker? #### --distractors-- Service Workers run in the main thread of the web application. --- Service Workers can be activated before they are installed. --- Service Workers can only run when the web application is open in the browser. #### --answer-- A Service Worker can intercept network requests after it has been activated. ### --question-- #### --text-- Which statement best describes a key feature of Progressive Web Apps (PWAs)? #### --distractors-- PWAs can only be installed on mobile devices. --- PWAs are required to have a back-end server. --- PWAs can only be accessed through specific browsers. #### --answer-- PWAs provide offline functionality through Service Workers.