1|Page
WGU C777 OBJECTIVE ASSESSMENT EXAM BANK -
C777 OA WEB DEVELOPMENT APPLICATIONS WITH
300+ QUESTIONS AND ANSWERS | LATEST UPDATED
2026-2027 EXPERT VERIFIED SOLUTIONS |
GUARANTEED PASS.
You can use a Graphical User Interface (GUI) editor to create Web pages, or you
can manually code them using HTML5 and CSS3. Why is it important to
understand what goes on behind the GUI of a Web editor?
A) You will be able to resize your Web pages to conform to the size of a
device's screen.
B) You will be able to troubleshoot code issues when the GUI Web editor fails.
C) You will be able to create apps for mobile Web browsers.
D) You will be able to change the GUI interface to more closely suit your
coding habits. - ANSWER: You will be able to troubleshoot code issues
when the GUI Web editor fails.
Consider the following HTML code:
<video width="360" height="270" controls="controls" poster="image.png">
<source src="video.mp4" type="video/mp4" />
<source src="video.webm" type="video/webm" />
<source src="video.ogg" type="video/ogg" />
Your browser does not support the HTML5 video element.
</video>
,2|Page
What attribute prevents the first frame of the video from displaying while the video
is downloading? A) The type attribute
B) The src attribute
C) The controls attribute
D) The poster attribute - ANSWER: The poster attribute
What does the W3C Markup Validation Service use to determine the HTML
specification against which to validate your Web page markup code? A)
The specified DTD in the <nav> section of your HTML page
B) The specified DTD in the <main> section of your HTML page
C) The <!DOCTYPE> declaration in the <header> section of your HTML page
D) The specified DTD in the <!DOCTYPE> declaration on your HTML page -
ANSWER: The specified DTD in the <!DOCTYPE> declaration on your
HTML page
What attribute should you add to the <audio> element if you want your audio to
play over and over again without stopping?
A) autoplay="autoplay"
B) loop="autoplay"
C) autoplay="loop"
D) loop="loop" - ANSWER: loop="loop"
,3|Page
How should you embed JavaScript code in an HTML5 document to which you are
also linking an external JavaScript file?
A) You must include the call to the external file and the code you want to
embed in the same script statement.
B) You must use separate script statements to call the external file and embed a
separate script.
C) You must place the script statement to call the external file in the body
section of your document, and place the script statement containing the code you
want to embed in the head section of your document.
D) You must place the script statement to call the external file in the head
section of your document, and place the script statement containing the code you
want to embed in the body section of your document. - ANSWER: You must use
separate script statements to call the external file and embed a separate script.
HTML5 has introduced specific elements to structure Web pages. In which
structure element should you include hypertext menus to access various pages of
the Web site?
A) The <article> structure element
B) The <aside> structure element
C) The <nav> structure element
D) The <section> structure element - ANSWER: The <nav> structure element
, 4|Page
What is an advantage of using HTML5 APIs when designing Web pages for mobile
devices?
A) HTML5 APIs use fewer resources than a proprietary browser plug-in does,
such as battery power and CPU memory.
B) HTML5 APIs streamline the application of proprietary browser plug-ins
when plug-ins are included in Web pages designed for mobile devices.
C) HTML5 APIs make Web pages non-responsive to varying user screen sizes,
thereby saving battery power and CPU memory.
D) HTML5 APIs eliminate the need for Cascading Style Sheets, thereby saving
battery power and CPU memory. - ANSWER: HTML5 APIs use fewer resources
than a proprietary browser plug-in does, such as battery power and CPU memory.
Code validation is the process of:
A) creating code that responds to user screen size.
B) accessing another point in a Web page or separate Web page.
C) determining how to display HTML elements in your Web page.
D) checking your code to verify that it complies with the syntax rules for your
chosen standard. - ANSWER: checking your code to verify that it complies
with the syntax rules for your chosen standard.
Which attribute and value must you add to the <audio> element to incorporate
default audio operations such as Play, Pause, Volume, etc.?
A) controls="controls"
WGU C777 OBJECTIVE ASSESSMENT EXAM BANK -
C777 OA WEB DEVELOPMENT APPLICATIONS WITH
300+ QUESTIONS AND ANSWERS | LATEST UPDATED
2026-2027 EXPERT VERIFIED SOLUTIONS |
GUARANTEED PASS.
You can use a Graphical User Interface (GUI) editor to create Web pages, or you
can manually code them using HTML5 and CSS3. Why is it important to
understand what goes on behind the GUI of a Web editor?
A) You will be able to resize your Web pages to conform to the size of a
device's screen.
B) You will be able to troubleshoot code issues when the GUI Web editor fails.
C) You will be able to create apps for mobile Web browsers.
D) You will be able to change the GUI interface to more closely suit your
coding habits. - ANSWER: You will be able to troubleshoot code issues
when the GUI Web editor fails.
Consider the following HTML code:
<video width="360" height="270" controls="controls" poster="image.png">
<source src="video.mp4" type="video/mp4" />
<source src="video.webm" type="video/webm" />
<source src="video.ogg" type="video/ogg" />
Your browser does not support the HTML5 video element.
</video>
,2|Page
What attribute prevents the first frame of the video from displaying while the video
is downloading? A) The type attribute
B) The src attribute
C) The controls attribute
D) The poster attribute - ANSWER: The poster attribute
What does the W3C Markup Validation Service use to determine the HTML
specification against which to validate your Web page markup code? A)
The specified DTD in the <nav> section of your HTML page
B) The specified DTD in the <main> section of your HTML page
C) The <!DOCTYPE> declaration in the <header> section of your HTML page
D) The specified DTD in the <!DOCTYPE> declaration on your HTML page -
ANSWER: The specified DTD in the <!DOCTYPE> declaration on your
HTML page
What attribute should you add to the <audio> element if you want your audio to
play over and over again without stopping?
A) autoplay="autoplay"
B) loop="autoplay"
C) autoplay="loop"
D) loop="loop" - ANSWER: loop="loop"
,3|Page
How should you embed JavaScript code in an HTML5 document to which you are
also linking an external JavaScript file?
A) You must include the call to the external file and the code you want to
embed in the same script statement.
B) You must use separate script statements to call the external file and embed a
separate script.
C) You must place the script statement to call the external file in the body
section of your document, and place the script statement containing the code you
want to embed in the head section of your document.
D) You must place the script statement to call the external file in the head
section of your document, and place the script statement containing the code you
want to embed in the body section of your document. - ANSWER: You must use
separate script statements to call the external file and embed a separate script.
HTML5 has introduced specific elements to structure Web pages. In which
structure element should you include hypertext menus to access various pages of
the Web site?
A) The <article> structure element
B) The <aside> structure element
C) The <nav> structure element
D) The <section> structure element - ANSWER: The <nav> structure element
, 4|Page
What is an advantage of using HTML5 APIs when designing Web pages for mobile
devices?
A) HTML5 APIs use fewer resources than a proprietary browser plug-in does,
such as battery power and CPU memory.
B) HTML5 APIs streamline the application of proprietary browser plug-ins
when plug-ins are included in Web pages designed for mobile devices.
C) HTML5 APIs make Web pages non-responsive to varying user screen sizes,
thereby saving battery power and CPU memory.
D) HTML5 APIs eliminate the need for Cascading Style Sheets, thereby saving
battery power and CPU memory. - ANSWER: HTML5 APIs use fewer resources
than a proprietary browser plug-in does, such as battery power and CPU memory.
Code validation is the process of:
A) creating code that responds to user screen size.
B) accessing another point in a Web page or separate Web page.
C) determining how to display HTML elements in your Web page.
D) checking your code to verify that it complies with the syntax rules for your
chosen standard. - ANSWER: checking your code to verify that it complies
with the syntax rules for your chosen standard.
Which attribute and value must you add to the <audio> element to incorporate
default audio operations such as Play, Pause, Volume, etc.?
A) controls="controls"
