db.json

[
  {
    "title": "reactData",
    "questions": [
      {
        "que": "ReactJS is developed by _____?",
        "answer": ["Google Engineers", "Facebook Engineers"],
        "correctAnswer": "Facebook Engineers"
      },
      {
        "que": "ReactJS is an MVC based framework?",
        "answer": ["True", "False"],
        "correctAnswer": "False"
      },
      {
        "que": "Which of the following are the advantages of React.js?",
        "answer": [
          "React.js can increase the application's performance with Virtual DOM.",
          "React.js is easy to integrate with other frameworks such as Angular, BackboneJS since it is only a view library.",
          "React.js can render both on client and server side.",
          "All of the above"
        ],
        "correctAnswer": "All of the above"
      },
      {
        "que": "What of the following is used in React.js to increase performance?",
        "answer": [
          "Original DOM",
          "Virtual DOM",
          " Both A and B",
          "None of the above."
        ],
        "correctAnswer": "Virtual DOM"
      },
      {
        "que": "Which of the following acts as the input of a class-based component?",
        "answer": ["Class", "Factory", "Render", "Props"],
        "correctAnswer": "Props"
      },
      {
        "que": "What is the default port where webpack-server runs?",
        "answer": ["3000", "8080", "3030", "6060"],
        "correctAnswer": "8080"
      },
      {
        "que": "How many numbers of elements a valid react component can return?",
        "answer": ["1", "2", "4", "5"],
        "correctAnswer": "1"
      },
      {
        "que": "What is the declarative way to render a dynamic list of components based on values in an array?",
        "answer": [
          "Using the reduce array method",
          "Using the <Each /> component",
          "Using the Array.map() method",
          "With a for/while loop"
        ],
        "correctAnswer": "Using the Array.map() method"
      },
      {
        "que": " What is a state in React?",
        "answer": [
          "A permanent storage.",
          "Internal storage of the component.",
          "External storage of the component.",
          "None of the above."
        ],
        "correctAnswer": "Internal storage of the component."
      },
      {
        "que": "What are the two ways to handle data in React?",
        "answer": [
          "State & Props",
          "Services & Components",
          "State & Services",
          "State & Component"
        ],
        "correctAnswer": "State & Props"
      },
      {
        "que": "Which of the following option is correct in the case of the Babel?",
        "answer": [
          "Babel is a Compiler.",
          "Babel is a Transpilar.",
          "None of the above.",
          "Both A and B are correct."
        ],
        "correctAnswer": "Both A and B are correct."
      },
      {
        "que": "What will happen if you render an input element with disabled = {false}?",
        "answer": [
          "It will be rendered as disabled",
          "It will not be rendered at all",
          "It will be rendered as enabled",
          "You cannot set it false."
        ],
        "correctAnswer": "It will be rendered as enabled"
      },
      {
        "que": " React.js is a free and open-source front-end....?",
        "answer": [
          "JavaScript library",
          "Bootstrap library",
          "CSS library",
          "None of the Above"
        ],
        "correctAnswer": "JavaScript library"
      },
      {
        "que": "Which of the following acts as the input of a class-based component?",
        "answer": ["Class", "Factory", "Render", "Props"],
        "correctAnswer": "Props"
      },
      {
        "que": "Which of the following is the correct data flow sequence of flux concept?",
        "answer": [
          "Dispatcher->Action->Store->View",
          "Action->Dispatcher->View->Store",
          "Action->Dispatcher->Store->View",
          "Action->Store->Dispatcher->View"
        ],
        "correctAnswer": "Action->Dispatcher->Store->View"
      },
      {
        "que": " React was originally created by...?",
        "answer": [
          "Jordan Walke",
          "Rasmus Lerdorf",
          "Miško Hevery",
          "None of the above"
        ],
        "correctAnswer": "Jordan Walke"
      },
      {
        "que": "What is the smallest building block of ReactJS?",
        "answer": ["props", "elements", "components", "None of the Above"],
        "correctAnswer": "components"
      }
    ]
  },
  {
    "title": "reduxData",
    "questions": [
      {
        "que": "Redux solves this problem by managing application’s state with a single global object called ?",
        "answer": ["directory", "file", "store", "None of the above"],
        "correctAnswer": "store"
      },
      {
        "que": "What is true about redux?",
        "answer": [
          "Redux is a predictable state container for JavaScript apps.",
          "Redux fundamental principles help in maintaining consistency throughout your application",
          "Redux makes debugging and testing easier",
          "All of the above"
        ],
        "correctAnswer": "All of the above"
      },
      {
        "que": "Actions and states are held together by a function called?",
        "answer": ["Reducer", "Redux", "suscribe", "view"],
        "correctAnswer": "Reducer"
      },
      {
        "que": "The ____________ can retrieve updated state and re-render again.",
        "answer": ["state", "store", "view", "action"],
        "correctAnswer": "view"
      },
      {
        "que": " A store is an ___________ object tree in Redux. ",
        "answer": ["immutable", "mutable", "Both A and B", "None of the above"],
        "correctAnswer": "immutable"
      },
      {
        "que": "A createStore function can have _________ arguments.",
        "answer": ["1", "2", "3", "4"],
        "correctAnswer": "3"
      },
      {
        "que": "Which of the following is react-Redux helper method?",
        "answer": ["help()", "assist()", "view()", "connect()"],
        "correctAnswer": "connect()"
      },
      {
        "que": "Which of them provide us debugging platform for Redux apps?",
        "answer": [
          "Redux-Testing",
          "Redux-Middleware",
          "Redux-Devtools",
          "Redux-suscriber"
        ],
        "correctAnswer": "Redux-Devtools"
      },
      {
        "que": "Which of the following makes stores available?",
        "answer": ["COMPONENT", "CONTAINER", "ACTIONS", "PROVIDER"],
        "correctAnswer": "PROVIDER"
      },

      {
        "que": "Predictability of Redux is determined by __________ most important principles.",
        "answer": ["Two", "Three", "Four", "Five"],
        "correctAnswer": "Three"
      },
      {
        "que": "___________ is a plain object that describes the intention to cause change with a type property.",
        "answer": ["class", "plain", "action", "object"],
        "correctAnswer": "action"
      },
      {
        "que": "Redux follows the ____________ data flow.",
        "answer": [
          "unidirectional",
          "bidirectional",
          "Both A and B",
          "None of the above"
        ],
        "correctAnswer": "unidirectional"
      },
      {
        "que": "The _______ notifies the view by executing their callback functions",
        "answer": ["state", "store", "reducer", "action"],
        "correctAnswer": "store"
      },
      {
        "que": "Redux can have _________ store in your application",
        "answer": ["single", "double", "multi", "None of the above"],
        "correctAnswer": "single"
      },
      {
        "que": "Which method helps you retrieve the current state of your Redux store?",
        "answer": ["dispatch", "subscribe", "action", "getState"],
        "correctAnswer": "getState"
      },
      {
        "que": "Which of the following rules are correct for Pure Functions?",
        "answer": [
          "A function returns the same result for same arguments.",
          "Its evaluation has no side effects, i.e., it does not alter input data.",
          "No mutation of local & global variables",
          "All of the above"
        ],
        "correctAnswer": "All of the above"
      },
      {
        "que": "Pure functions are unpredictable",
        "answer": ["TRUE", "FALSE", "Can be true or false", "Can not say"],
        "correctAnswer": "FALSE"
      },
      {
        "que": "Both props and state are plain JavaScript objects.",
        "answer": ["TRUE", "FALSE", "Can be true or false", "Can not say"],
        "correctAnswer": "TRUE"
      },
      {
        "que": "Which method allows you to dispatch an action to change a state in your application?",
        "answer": ["getState", "setState", "dispatch", "subscribe"],
        "correctAnswer": "dispatch"
      }
    ]
  },
  {
    "title": "javaScriptData",
    "questions": [
      {
        "que": "What is JavaScript?",
        "answer": [
          "JavaScript is a scripting language used to make the website interactive",
          "JavaScript is an assembly language used to make the website interactive",
          "JavaScript is a compiled language used to make the website interactive",
          "None of the above"
        ],
        "correctAnswer": "JavaScript is a scripting language used to make the website interactive"
      },
      {
        "que": "Javascript is an _______ language?",
        "answer": [
          "Object-Oriented",
          "Object-Based",
          "Procedural",
          "None of the above"
        ],
        "correctAnswer": "Object-Oriented"
      },
      {
        "que": "Among the given statements, which statement defines closures in JavaScript?",
        "answer": [
          " JavaScript is a function that is enclosed with references to its inner function scoper",
          "JavaScript is a function that is enclosed with references to its lexical environment",
          "JavaScript is a function that is enclosed with the object to its inner function scope",
          "None of the mentioned"
        ],
        "correctAnswer": "JavaScript is a function that is enclosed with references to its lexical environment"
      },
      {
        "que": "Arrays in JavaScript are defined by which of the following statements?",
        "answer": [
          "It is an ordered list of values",
          "It is an ordered list of objects",
          "It is an ordered list of string",
          "It is an ordered list of functions"
        ],
        "correctAnswer": "It is an ordered list of values"
      },
      {
        "que": "Which of the following is not javascript data types?",
        "answer": [
          "Null type",
          "Undefined type",
          "Number type",
          "All of the mentioned"
        ],
        "correctAnswer": "All of the mentioned"
      },
      {
        "que": "Which of the following can be used to call a JavaScript Code Snippet?",
        "answer": [
          "Function/Method",
          "Preprocessor",
          "Triggering Event",
          "RMI"
        ],
        "correctAnswer": "Function/Method"
      },
      {
        "que": "What is the basic difference between JavaScript and Java?",
        "answer": [
          "Functions are considered as fields",
          "Functions are values, and there is no hard distinction between methods and fields",
          "Variables are specific",
          "There is no difference"
        ],
        "correctAnswer": "Functions are values, and there is no hard distinction between methods and fields"
      },
      {
        "que": "Why JavaScript Engine is needed?",
        "answer": [
          "Both Compiling & Interpreting the JavaScript",
          "Parsing the javascript",
          "Interpreting the JavaScript",
          "Compiling the JavaScript"
        ],
        "correctAnswer": "Interpreting the JavaScript"
      },
      {
        "que": "Which of the following methods/operation does javascript use instead of == and !=?",
        "answer": [
          "JavaScript uses equalto()",
          "JavaScript uses equals() and notequals() instead",
          "JavaScript uses bitwise checking",
          "JavaScript uses === and !== instead"
        ],
        "correctAnswer": "JavaScript uses === and !== instead"
      },

      {
        "que": "Which of the following is not a framework?",
        "answer": ["JavaScript .NET", "JavaScript", "Cocoa JS", "jQuery"],
        "correctAnswer": "JavaScript"
      },
      {
        "que": "Why event handlers is needed in JS?",
        "answer": [
          "Allows JavaScript code to alter the behaviour of windows",
          "Adds innerHTML page to the code",
          "Change the server location",
          "Performs handling of exceptions and occurrences"
        ],
        "correctAnswer": "Allows JavaScript code to alter the behaviour of windows"
      },
      {
        "que": "Which of the following is the property that is triggered in response to JS errors?",
        "answer": ["onclick", "onerror", "onmessage", "onexception"],
        "correctAnswer": "onerror"
      },
      {
        "que": "Which of the following is not an error in JavaScript?",
        "answer": [
          "Missing of Bracket",
          "Division by zero",
          "Syntax error",
          "Missing of semicolons"
        ],
        "correctAnswer": "Division by zero"
      },
      {
        "que": "Which of the following function of String object returns a number indicating the Unicode value of the character at the given index?",
        "answer": ["charAt()", "charCodeAt()", "concat()", "indexOf()"],
        "correctAnswer": "charCodeAt()"
      },
      {
        "que": "Which of the following function of Array object joins all elements of an array into a string?",
        "answer": ["concat()", "join()", "pop()", "map()"],
        "correctAnswer": "join()"
      }
    ]
  },
  {
    "title": "cssData",
    "questions": [
      {
        "que": "What is CSS",
        "answer": [
          "CSS is a style sheet language",
          "CSS is designed to separate the presentation and content, including layout, colors, and fonts",
          "CSS is the language used to style the HTML documents",
          "All of the mentioned"
        ],
        "correctAnswer": "All of the mentioned"
      },
      {
        "que": "Which of the following tag is used to embed css in html page?",
        "answer": ["<css>", "<!DOCTYPE html>", "<style>", "<script>"],
        "correctAnswer": "<style>"
      },
      {
        "que": " Which of the following CSS selectors are used to specify a group of elements?",
        "answer": ["both class and tag", "id", "class", "tag"],
        "correctAnswer": "class"
      },
      {
        "que": "Which of the following has introduced text, list, box, margin, border, color, and background properties?",
        "answer": ["HTML", "PHP", "CSS", "Ajax"],
        "correctAnswer": "CSS"
      },
      {
        "que": "Which of the following CSS framework is used to create a responsive design?",
        "answer": ["django", "rails", "larawell", "bootstrap"],
        "correctAnswer": "bootstrap"
      },
      {
        "que": "Which of the following CSS selector is used to specify a rule to bind a particular unique element?",
        "answer": ["tag", "id", "class", "both class and tag"],
        "correctAnswer": "id"
      },
      {
        "que": "Which of the following CSS property is used to make the text bold?",
        "answer": [
          "text-decoration: bold",
          "font-weight: bold",
          "font-style: bold",
          "text-align: bold"
        ],
        "correctAnswer": "font-weight: bold"
      },
      {
        "que": "Which of the following CSS style property is used to specify an italic text?",
        "answer": ["style", "font", "font-style", "@font-face"],
        "correctAnswer": "font-style"
      },
      {
        "que": "Which of the following are the CSS Extension Prefixes for Webkit?",
        "answer": ["-chrome", "-web", "-o-", "-webkit"],
        "correctAnswer": "-webkit"
      },

      {
        "que": "Which of the following is the correct syntax to link an external style sheet in the HTML file?",
        "answer": [
          "<link rel=”stylesheet” href=”style.css” />",
          "<link rel=”stylesheet” src=”style.css” />",
          "<style rel=”stylesheet” src=”style.css” />",
          "<style rel=”stylesheet” link=”style.css” />"
        ],
        "correctAnswer": "<link rel=”stylesheet” href=”style.css” />"
      },
      {
        "que": "Which of the following is the first CSS specification to become an official W3C Recommendation?",
        "answer": [
          "CSS level 2",
          "(X)HTML CSS",
          "CSS level 1",
          "CSS level 2.1"
        ],
        "correctAnswer": "CSS level 1"
      },
      {
        "que": "Which of the following function defines a linear gradient as a CSS image?",
        "answer": ["gradient()", "linear-gradient()", "grayscale()", "image()"],
        "correctAnswer": "linear-gradient()"
      },
      {
        "que": "Which of the following CSS property can be used to set the image as a border instead of the border style?",
        "answer": [
          "background-image-source",
          "background-image",
          "border-image-source",
          "border-image"
        ],
        "correctAnswer": "border-image-source"
      },
      {
        "que": "Which of the following CSS property defines the different properties of all four sides of an element’s border in a single declaration?",
        "answer": ["border-collapse", "border-width", "padding", "border"],
        "correctAnswer": "border-width"
      },
      {
        "que": "Which of the following is the correct way to apply CSS Styles?",
        "answer": [
          "in an external CSS file",
          "in an external CSS file",
          "inside the <head> section of an HTML page",
          "all of the mentioned"
        ],
        "correctAnswer": "all of the mentioned"
      },
      {
        "que": "Which of the following CSS property sets the font size of text?",
        "answer": ["font-size", "text-size", "text", "size"],
        "correctAnswer": "font-size"
      },
      {
        "que": "Which of the following is not the property of the CSS box model?",
        "answer": ["margin", "color", "width", "height"],
        "correctAnswer": "color"
      },
      {
        "que": "Which of the following CSS property sets what kind of line decorations are added to an element, such as underlines, overlines, etc?",
        "answer": [
          "text-decoration",
          "text-style",
          "text-decoration-line",
          "text-line"
        ],
        "correctAnswer": "text-decoration-line"
      }
    ]
  },
  {
    "title": "htmlData",
    "questions": [
      {
        "que": "HTML stands for -",
        "answer": [
          "HighText Machine Language",
          "HyperText and links Markup Language",
          "HyperText Markup Language",
          "None of these"
        ],
        "correctAnswer": "HyperText Markup Language"
      },
      {
        "que": "The correct sequence of HTML tags for starting a webpage is -",
        "answer": [
          "Head-Title-HTML-body",
          "HTML-Body-Title-Head",
          "HTML-Head-Title-Body",
          "Head-HTML-Title-Body"
        ],
        "correctAnswer": "HTML-Head-Title-Body"
      },
      {
        "que": "Which of the following element is responsible for making the text bold in HTML?",
        "answer": ["<pre>", "<a>", "<b>", "<br>"],
        "correctAnswer": "<b>"
      },
      {
        "que": "Which of the following tag is used for inserting the largest heading in HTML?",
        "answer": ["<h3>", "<h4>", "<h1>", "<h6>"],
        "correctAnswer": "<h1>"
      },
      {
        "que": "How to create an unordered list (a list with the list items in bullets) in HTML?",
        "answer": ["<ul>", "<ol>", "<li>", "<i>"],
        "correctAnswer": "<ul>"
      },
      {
        "que": "<input> is -",
        "answer": [
          "a format tag.",
          "an empty tag.",
          "All of the above",
          "None of the above"
        ],
        "correctAnswer": "an empty tag."
      },
      {
        "que": "Which of the following tag is used to make the underlined text?",
        "answer": ["<i>", "<ul>", "<u>", "<pre>"],
        "correctAnswer": "<u>"
      },
      {
        "que": "Which of the following tag is used to define options in a drop-down selection list?",
        "answer": ["<select>", "<list>", "<dropdown>", "<option>"],
        "correctAnswer": "<option>"
      },
      {
        "que": "Which of the following attribute is used to provide a unique name to an element?",
        "answer": ["class", "id", "type", "None of the above"],
        "correctAnswer": "id"
      },

      {
        "que": "Which of the following HTML tag is the special formatting tag?",
        "answer": ["<p>", "<b>", "<pre>", "None of the above"],
        "correctAnswer": "<pre>"
      },
      {
        "que": "Which of the following is the container for <tr>, <th>, and <td> ?",
        "answer": ["<data>", "<table>", "<group>", "All of the above"],
        "correctAnswer": "<table>"
      },
      {
        "que": "What are the types of unordered or bulleted list in HTML?",
        "answer": [
          "disc, square, triangle",
          "polygon, triangle, circle",
          "disc, circle, square",
          "All of the above"
        ],
        "correctAnswer": "disc, circle, square"
      },
      {
        "que": "Which of the following HTML attribute is used to define inline styles?",
        "answer": ["style", "type", "class", "None of the above"],
        "correctAnswer": "style"
      },
      {
        "que": " In HTML, the tags are __________.",
        "answer": [
          "in upper case",
          "case-sensitive",
          "in lowercase",
          "not case sensitive"
        ],
        "correctAnswer": "not case sensitive"
      },
      {
        "que": "Which of the following tag is used to add rows in the table?",
        "answer": [
          "<td> and </td>",
          "<th> and </th>",
          "<tr> and </tr>",
          "None of the above"
        ],
        "correctAnswer": "<tr> and </tr>"
      },
      {
        "que": "What attribute do we use for data binding?",
        "answer": ["datasrc", "mayscript", "name", "datafld"],
        "correctAnswer": "datasrc"
      },
      {
        "que": " The <hr> tag in HTML is used for -",
        "answer": [
          "new line",
          "vertical ruler",
          "new paragraph",
          "horizontal ruler"
        ],
        "correctAnswer": "horizontal ruler"
      },
      {
        "que": "A program in HTML can be rendered and read by -",
        "answer": ["Web browser", "Server", "Interpreter", "None of the above"],
        "correctAnswer": "Web browser"
      }
    ]
  },
  {
    "title": "mongodbData",
    "questions": [
      {
        "que": "What is MongoDB?",
        "answer": [
          "A file system.",
          "A SQL database.",
          "A NoSQL database.",
          "An Access database."
        ],
        "correctAnswer": "A NoSQL database."
      },
      {
        "que": "How to create a database in mongodb?",
        "answer": [
          "use databaseName",
          "new databaseName",
          "create databaseName",
          "None of the above"
        ],
        "correctAnswer": "use databaseName"
      },
      {
        "que": "MongoDB is a _________ database that provides high performance, high availability, and easy scalability.",
        "answer": ["Graph", "Key value", "Document", "All of the mentioned"],
        "correctAnswer": "Document"
      },
      {
        "que": "Which field is always the first field in the document.?",
        "answer": ["_id", "Ob_id", "id", "None of these"],
        "correctAnswer": "_id"
      },
      {
        "que": "Which of the following is incorrect statement about find and findOne operations in MongoDB?",
        "answer": [
          "find() returns all the documents in a collection while findOne() retrieves only the first one.",
          "find() and findOne() returns cursors to the collection documents",
          "findOne() returns the actual first document retrieved from a collection",
          "find.limit(1) is not the same query as findOne()"
        ],
        "correctAnswer": "find() and findOne() returns cursors to the collection documents"
      },
      {
        "que": "By default, the MongoDB cursor in mongo shell is configured to return how many documents? To get the next set of documents, which command is used?",
        "answer": ["20 it", "200 more", "50 it", "No limit none"],
        "correctAnswer": "20 it"
      },
      {
        "que": "Which of the following command is used to get all the indexes on a collection?",
        "answer": [
          "db.collection.getIndexes()",
          "db.collection.showIndexes()",
          "db.collection.findIndexes()",
          "db.showIndexes()"
        ],
        "correctAnswer": "db.collection.getIndexes()"
      },
      {
        "que": "In which year the MongoDB was Initial release?",
        "answer": ["2008", "2009", "2011", "2010"],
        "correctAnswer": "2009"
      },
      {
        "que": " A collection and a document in MongoDB is equivalent to............. concepts respectively.",
        "answer": [
          "Table and Column",
          "Table and Row",
          "Column and Row",
          "Database and Table"
        ],
        "correctAnswer": "Table and Row"
      },

      {
        "que": "What is the good alternatives to MongoDB?",
        "answer": [
          "Redis & CouchDB",
          "Riak & Hbase",
          "Cassandra",
          "All of the mentioned"
        ],
        "correctAnswer": "All of the mentioned"
      },
      {
        "que": "Does MongoDB supports query joins between collections ?",
        "answer": ["No", "Yes"],
        "correctAnswer": "Yes"
      },
      {
        "que": "MongoDB stores all documents in ...........",
        "answer": ["Rows", "Tables", "Collections", "None of the above"],
        "correctAnswer": "Collections"
      },
      {
        "que": "MongoDB has been adopted as ________ software by a number of major websites and services.",
        "answer": ["backend", "frontend", "proprietary", "None of the above"],
        "correctAnswer": "backend"
      },
      {
        "que": "To create index in descending order, the value of key is?",
        "answer": ["0", "1", "-1", "Infinite"],
        "correctAnswer": "-1"
      },
      {
        "que": "Which method deletes multiple (specified) indexes on a collection?",
        "answer": [
          "dropIndexes()",
          "dropIndex()",
          "Both A and B can be used",
          "getIndexes()"
        ],
        "correctAnswer": "dropIndexes()"
      },
      {
        "que": "Which of the following line skips the first 5 documents in the bios collection and returns all remaining documents?",
        "answer": [
          "db.bios.find().limit( 5 )",
          "db.bios.find().skip( 1 )",
          "db.bios.find().skip( 5)",
          "db.bios.find().sort( 5 )"
        ],
        "correctAnswer": "db.bios.find().skip( 5)"
      },
      {
        "que": "Command display the list of databases.",
        "answer": ["show db", "show dbs", "show data", "display dbs"],
        "correctAnswer": "show dbs"
      },
      {
        "que": "Which of the following operation adds a new document to the users collection ?",
        "answer": ["add", "insert", "truecate", "drop"],
        "correctAnswer": "insert"
      }
    ]
  }
]