Quiz 1

1. 1What is not true about let, var, and const?

   1. Alet and const were new additions in ES6
   2. Blet can be defined in block scope
   3. Clet can be redeclared in the same scope
   4. Dconst cannot be reassigned
2. 2By default, event handlers are set to the bubbling phase.

   1. AVerdadero
   2. BFalso
3. 3What is the result of the following operation?
   ( 7 || 0 ) ? "hello" : world

   1. A"hello"
   2. Bworld
   3. Cthe operation will result in a reference error
4. 4This function of the XMLHttpRequest object sends the request to the server?

   1. Asend
   2. Brun
   3. Csubmit
   4. DNone of these.
5. 5Which of these is not among the parameters used in the XMLHttpRequest open function?
   

   1. Ahttp method
   2. BURL
   3. Casync on/off
   4. Dform data
6. 6This property of the XMLHttpRequest object will contain the event handler to be called when the readystatechange event is fired.

   1. Aonstatuschange
   2. Bonreadystate
   3. Conreadystatechange
   4. DNone of these.
7. 7This property of the XMLHttpRequest object will have a value of 200 when the server sends back an HTTP response with an OK status code.

   1. Astatus
   2. BreadyState
   3. Conreadystatechange
   4. DNone of these.
8. 8This property of the XMLHttpRequest object will have a value of 4 when the server completes the requested operation.

   1. Astatus
   2. BreadyState
   3. Conreadystatechange
   4. DNone of these.
9. 9How can you add new DIV elements dynamically?

   1. Adocument.createElement('div')
   2. Bdocument.createNode('div')
   3. Cdocument.createDiv( )
   4. Ddocument.newElement('div')
10. 10What is === operator?

    1. ACompares equality and, if equal, assigns the value of the left operator to the value of the right
    2. BCompares value equality as well as data type
    3. CBasic assignment operator
    4. DBasic comparison operator

11. 11Which is not a JavaScript data type?
    

    1. ANumber
    2. BString
    3. CBoolean
    4. DFunction
    5. EObject
    6. FNull
    7. GUndeclared
12. 12What is not true about JavaScript?
    

    1. AJavaScript is a scripting language
    2. BIt is object-based, lightweight and cross platform
    3. CIt is widely used for client side validation
    4. DJavaScript relies on server-side technologies to manage cookies
    5. EAble to build interactivity into otherwise static HTML pages
    6. FEmbedded in Netscape, Internet Explorer, and other web browsers
13. 13!== will perform type coercion.
    

    1. AVerdadero
    2. BFalso
14. 14In JavaScript, Array inherits from Object.
    

    1. AVerdadero
    2. BFalso
15. 15In JavaScript, a closure is an inner function that has access to its outer function's scope, even after the outer function has returned.

    1. AVerdadero
    2. BFalso
16. 16JavaScript code is compiled before being delivered to the browser (or other platform).
    

    1. AVerdadero
    2. BFalso
17. 17What is the correct JavaScript syntax to change the content of the HTML element?
    

    1. A#demo.innerHTML = "Hello World!";
    2. Bdocument.getElementByName("demo").innerHTML = "Hello World!";
    3. Cdocument.getElementById("demo").innerHTML = "Hello World!";
    4. Ddocument.getElement("demo").innerHTML = "Hello World!";
18. 18What is the correct way to write a JavaScript array?
    

    1. Avar colors = 1 = ("red"), 2 = ("green"), 3 = ("blue")
    2. Bvar colors = (1:"red", 2:"green", 3:"blue")
    3. Cvar colors = "red", "green", "blue"
    4. Dvar colors = ["red", "green", "blue"]
19. 19Which of the following is not a valid JavaScript data type?
    

    1. Aint
    2. Bstring
    3. Cboolean
    4. Darray
20. 20What does DOM stand for?
    

    1. ADocument Object Model
    2. BDocumented Object Model
    3. CDocument Objective Modeling
    4. DDormant Object Model
21. 21Which of the following gets an HTML element with ID = "Main"
    

    1. Adocument.getElementById("Main");
    2. Bdocument.getElementWithId("Main");
    3. Cwindow.getElementById("Main");
    4. Ddocument.parseForId("Main);
22. 22You are allowed to have more than one script tag on the page for multiple JavaScript references.

    1. AVerdadero
    2. BFalso
23. 23Null is not a data type of JavaScript
    

    1. AVerdadero
    2. BFalso
24. 24What is the opposite of bubbling?

    1. ACapturing
    2. BPopping
    3. CSeeking
    4. DDropping
25. 25What is the correct syntax for referring to an external script called "my.js"
    

    1. A<script> my.js </script>
    2. B<script name="my.js">
    3. C<script href="my.js">
    4. D<script src="my.js">
26. 26JavaScript Supports dynamic typing

    1. AVerdadero
    2. BFalso
27. 27A String can be made using either the single or double quotes characters.
    

    1. AVerdadero
    2. BFalso
28. 28How many elements does the following array have [1,2,'3']
    

    1. A1
    2. B2
    3. C3
    4. DFALSE
29. 29The default value returned from a function is undefined.
    

    1. AVerdadero
    2. BFalso
30. 30Which method do you call to output information to the Developer's Console?
    

    1. Aconsole.log
    2. Bconsole.print
    3. Cconsole.talk
    4. Dconsole.out
31. 31An object is essentially a collection of key/value pairs.
    

    1. AVerdadero
    2. BFalso
32. 32Given the following, which of the following correctly binds the click event to an element?
    < button id="clicker" >Click Me< /button > ... var elem = document.getElementById("clicker");
    

    1. Aelem.addEventListener("click", function(){?});
    2. Belem.attachEventListener("click", function(){?});
    3. Celem.addEventListener("mouseclick", function(){?});
    4. Delem.attachEvent("mouseclick", function(){?});
33. 33A callback function is a function that is an argument of another function that is typically executed before returning.

    1. AVerdadero
    2. BFalso
34. 34The number 1, is considered truthy

    1. AVerdadero
    2. BFalso
35. 35Which of the following JSON would correctly model the following:
    A Person with the name Kyle Miller and an age of 20
    

    1. Aperson = { name: 'Kyle Miller', age: 20, }
    2. Bperson.name = 'Kyle Miller'; person.age = 20;
    3. Cperson = { 'Kyle Miller', 20, }
    4. Dperson = { name: "Kyle Miller"; age: 20; }
36. 36Which of the following JSON would correctly model the following:
    A list of numbers from 1, to 4
    

    1. Adata = [1, 2, 3, 4] ***.....dumb question
    2. Bdata = { value: 1, value: 2, value: 3, value: 4 }
    3. Cdata = { [1,2,3,4]}
    4. Ddata = { 1: 2; 3:4 }
37. 37The XHR object has a readyState property that can have a value of 0-4. What does 0 represent?

    1. Athe request was not initialized
    2. Bthe server connection was established
    3. Cthe request was received by the server
    4. Dthe server is still processing the request
    5. Ethe response is ready
38. 38The XHR object has a readyState property that can have a value of 0-4. What does 1 represent?

    1. Athe request was not initialized
    2. Bthe server connection was established
    3. Cthe request was received by the server
    4. Dthe server is still processing the request
    5. Ethe response is ready
39. 39The XHR object has a readyState property that can have a value of 0-4. What does 2 represent?

    1. Athe request was not initialized
    2. Bthe server connection was established
    3. Cthe request was received by the server
    4. Dthe server is still processing the request
    5. Ethe response is ready
40. 40The XHR object has a readyState property that can have a value of 0-4. What does 3 represent?

    1. Athe request was not initialized
    2. Bthe server connection was established
    3. Cthe request was received by the server
    4. Dthe server is still processing the request
    5. Ethe response is ready
41. 41JSON stands for
    

    1. AJava Object Notes
    2. BJavaScript Objective Notation
    3. CJavaScript Object Notation
    4. DJava Objective Notation
42. 42Which of the following methods of the JSON object will convert data from a string to an object.
    

    1. Astringify()
    2. Bparse()
    3. CconvertString()
    4. DconvertObject()
43. 43AJAX stands for Asynchronous JSON and XML
    

    1. AVerdadero
    2. BFalso
44. 44Which HTML tag would you use to allow the user to navigate to a different page?
    

    1. A<link>
    2. B<a>
    3. C<button>
    4. D<nav>
45. 45An attribute is
    

    1. AThe name of a tag
    2. BExtra data provided to a tag
    3. CAny child tag
    4. DA tag which cannot contain other tags
46. 46Forms are
    

    1. AArbitrary structuring elements.
    2. BUsed to collect a group of input fields into a single set.
    3. CInput arbitrarily long text.
    4. DUsed to form complicated designs in CSS.
47. 47Web browsers are primarly used for
    

    1. Acreating a visual representation of an HTML document.
    2. Bediting and manipulating HTML documents by developers.
    3. Cediting and manipulating CSS documents by developers.
48. 48CSS stands for
    

    1. ACascading Sample Sheets
    2. BColorful Style Sheets
    3. CCascading Style Sites
    4. DCascading Style Sheets
49. 49The three basic selectors are

    1. Aelement, tag, and class
    2. Bclass, ID, and pseudoclass
    3. Cname, class, and ID
    4. Dtag, class, and ID
50. 50A CSS selector is
    

    1. Aa special keyword in CSS
    2. Bthe name of a styling option which we can modify.
    3. Can assignable value for a property.
    4. Da string of text used to target elements in an HTML document
51. 51HTTP stands for
    

    1. AHyperText Transfer Protocol
    2. BHyperText Markup Language
    3. CHyperText Telephone Protocol
    4. DHyperTransfer Text Protocol
52. 52What is the difference between XML and HTML?
    

    1. AHTML is used for exchanging data, XML is not.
    2. BXML is used for exchanging data, HTML is not.
    3. CHTML can have user defined tags, XML cannot
53. 53What is the root element of an html page?
    

    1. A<html>
    2. B<root>
    3. C<!DOCTYPE html>
    4. D<body>
54. 54How can you make an unordered list?
    

    1. A<ul>
    2. B<unorderedlist>
    3. C<list type="unordered">
    4. D<li>
55. 55ID and CLASS are examples of HTML
    

    1. Aattributes.
    2. Belements.
    3. Ctags.
    4. Ddeclarations.
56. 56What does HTML stand for?
    

    1. AHyper Text Markup Language
    2. BHyperlinks and Text Markup Language
    3. CHome Tool Markup Language
    4. DHyper Tool Markup Language
57. 57HTML is a programming language.
    

    1. AVerdadero
    2. BFalso
58. 58HTML attribute values are case-sensitive
    

    1. AVerdadero
    2. BFalso
59. 59HTML is used to display data while XML is used to store data.
    

    1. AVerdadero
    2. BFalso
60. 60HTML comments start with <!-- and end with ->
    

    1. AVerdadero
    2. BFalso

Descripción

Test sobre Quiz 1, creado por Phillip Schneider el 11/06/2019.

Autor

Phillip Schneider

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