Microsoft 70-480 Online Practice Questions and Exam Preparation

Microsoft 70-480 Online Questions & Answers

• Question 161:

  You develop an HTML5 webpage that contains the following HTML markup:

  Users must enter a valid integer value into the text box.

  You need to validate the data type that is received from the input element.

  Which two code segments should you include on the webpage? (Each correct answer presents a complete solution. Choose two.)

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  A. Option A
  B. Option B

  ---

  *

  parseInt

  The parseInt() function parses a string and returns an integer.

  Syntax: parseInt(string,radix)

  string Required. The string to be parsed

  radix Optional. A number (from 2 to 36) that represents the numeral system to be used.

  *

  The isNaN() function determines whether a value is an illegal number (Not-a-Number).

  This function returns true if the value is NaN, and false if not.

  Reference: https://www.w3schools.com/jsref/jsref_parseInt.asp

  https://www.w3schools.com/jsref/jsref_isNaN.asp

• Question 162:

  You are implementing a web worker by using JavaScript and HTML5. The web worker processes a long-running loop and returns the result to a webpage.

  The web worker is defined on the webpage as follows:

  

  You have the following requirements:

  

  Evaluate the message value in the web worker.

  

  Process the loop based on the iterations value that is passed from the webpage.

  

  Return a value back to the webpage from the web worker.

  You need to implement the web worker. How should you complete the relevant code? (To answer, drag the appropriate code segment to the correct location or locations in the answer area. Use only code segments that apply.)

  Select and Place:

  

  

  ---

  Note:

  * The event object for a message event supports the following additional properties:

  the data property contains the message,

  the origin property retrieves the scheme, hostname and port of the document that invoked the postMessage method,

  the source property refers to the window object that contains the document that invoked the postMessage method,

  the lastEventId property returns the identifier of the last message.

• Question 163:

  DRAG DROP

  You have the following markup:

  

  You need to complete the styles to meet the following requirements:

  How should you complete the styles? To answer, drag the appropriate code elements to the correct targets in the answer area. Each code element may be used once, more than once, or not at all. You may need to drag the split bar between

  panes or scroll to view content.

  Select and Place:

  

  

• Question 164:

  You develop a webpage by using HTML5. You create the following markup and code: (Line numbers are included for reference only.)

  

  You need to ensure that the values that users enter are only numbers, letters, and underscores, regardless of the order. Which code segment should you insert at line 04?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

  ---

  Example:

  Sometimes situations arise when user should fill a single or more than one fields with alphabet characters

• Question 165:

  You are developing an HTML5 web application that displays customer mailing address information.

  The application loads addresses from a web service by using AJAX. The following code defines a Customer object and loads address data.

  

  You need to implement the loadAddress function. Which code segment should you use?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 166:

  You have the following CSS markup that renders a red rectangle on a webpage.

  

  How large will the red rectangle appear when it renders on the page?

  A. width 200px, height 150 px
  B. width 400px, height 350 px
  C. width 100px, height 50 px
  D. width 300px, height 250 px
  A. width 200px, height 150 px

  ---

  References: https://www.w3schools.com/CSSref/css3_pr_box-sizing.asp

• Question 167:

  DRAG DROP

  You are developing an online shopping application that accepts credit cards for payment.

  If the credit card number is invalid, the application must:

  1. Generate an error

  2. Assign "200" to the error number

  3. Assign "Invalid" to the error description

  You need to write the code that meets the requirements.

  How should you write the code? (To answer, drag the appropriate code segment or segments to the correct location in the answer area. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)

  Select and Place:

  

  

  ---

  Example: throw new Error(200, "x equals zero"); References: http://www.javascriptkit.com/javatutors/trycatch2.shtml

• Question 168:

  DRAG DROP

  You have the following markup.

  

  You need to develop code in JavaScript to ensure that when the button is clicked, an alert is displayed if the numberValue type is not a number.

  Which five code blocks should you use to develop the solution? To answer, move the appropriate code blocks from the list of code blocks to the answer area and arrange them in the correct order.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  

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  References: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof https://www.w3schools.com/jsref/jsref_isNaN.asp https://www.w3schools.com/jsref/jsref_isnan_number.asp https://www.w3schools.com/jsref/met_win_alert.asp

• Question 169:

  You are creating a JavaScript object that represents a customer.

  You need to extend the Customer object by adding the GetCommission() method.

  You need to ensure that all future instances of the Customer object implement the GetCommission() method.

  Which code segment should you use?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  D. Option D

  ---

  Object.prototype.constructor Returns a reference to the Object function that created the instance's prototype. Note that the value of this property is a reference to the function itself, not a string containing the function's name. The value is only read-only for primitive values such as 1, true and "test".

  The constructor property is created together with the function as a single property of func.prototype.

  References: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor\

• Question 170:

  You have a web page that contains the following markup.

  

  You need to ensure that css1.css is used only when the current browser width is less than 800px. Which markup should you add to the web page?

  A. @media="(max-width: 800px)"
  B. @max-width="800px"
  C. media="(max-width: 800px)"
  D. max-width="800px"
  A. @media="(max-width: 800px)"