WGU C777 OA EXAM / ACTUAL WGU C777 WEB DEVELOPMENT
APPLICATIONS OBJECTIVE ASSESSMENT (OA) 2026/2027 ACCURATE
APPROVED QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES (A NEW UPDATED VERSION 2026 EDITION)
|GUARANTEED SUCCESS A+ (BRAND NEW!) |FULL REVISED EXAM
Question 1
Which HTML5 element is used to define independent, self-contained
content that could be distributed and reused?
A. <section>
B. <article>
C. <div>
D. <aside>
Correct Answer: B. <article>
Rationale: The <article> element represents a self-contained
composition in a document, page, application, or site, such as a forum
post, magazine article, or blog entry. <section> groups related
content, <div> is a generic container, and <aside> contains tangentially
related content.
Question 2
Which CSS property is used to create a grid layout that defines both
rows and columns in a single declaration?
A. grid-template
B. grid-area
C. grid-auto-flow
D. grid-gap
Correct Answer: A. grid-template
Rationale: grid-template is a shorthand for grid-template-rows and grid-
template-columns, allowing you to define both dimensions in one
,line. grid-area assigns an item to a named area, grid-auto-flow controls
auto-placement, and grid-gap sets gutters.
Question 3
In JavaScript, which statement correctly declares a block-scoped
variable that cannot be reassigned?
A. let x = 10;
B. var x = 10;
C. const x = 10;
D. static x = 10;
Correct Answer: C. const x = 10;
Rationale: const declares a block-scoped variable that cannot be
reassigned after initialization. let is block-scoped but allows
reassignment, var is function-scoped, and static is used for class
methods/properties, not standalone variables.
Question 4
Which HTTP method should be used to partially update a resource?
A. PUT
B. POST
C. DELETE
D. PATCH
Correct Answer: D. PATCH
Rationale: PATCH applies partial modifications to a resource. PUT
replaces the entire resource, POST creates a new resource or submits
data, and DELETE removes a resource.
, Question 5
What is the correct CSS syntax to select all <p> elements that are direct
children of a <div> with class "container"?
A. div.container > p
B. div.container p
C. div.container + p
D. div.container ~ p
Correct Answer: A. div.container > p
Rationale: The child combinator > selects direct children only.
Descendant selector (space) selects all nested <p>, + selects adjacent
sibling, ~ selects general siblings.
Question 6
Which JavaScript method sends an asynchronous HTTP request and
returns a Promise?
A. XMLHttpRequest
B. fetch()
C. $.ajax()
D. request()
Correct Answer: B. fetch()
Rationale: fetch() is modern, promise-based, and built into browsers for
asynchronous HTTP requests. XMLHttpRequest is callback-
based, $.ajax() is jQuery-specific, and request() is not a standard browser
API.
Question 7
Which ARIA attribute defines the current item in a set of related items,
such as a step in a wizard?
APPLICATIONS OBJECTIVE ASSESSMENT (OA) 2026/2027 ACCURATE
APPROVED QUESTIONS AND CORRECT VERIFIED ANSWERS WITH
DETAILED RATIONALES (A NEW UPDATED VERSION 2026 EDITION)
|GUARANTEED SUCCESS A+ (BRAND NEW!) |FULL REVISED EXAM
Question 1
Which HTML5 element is used to define independent, self-contained
content that could be distributed and reused?
A. <section>
B. <article>
C. <div>
D. <aside>
Correct Answer: B. <article>
Rationale: The <article> element represents a self-contained
composition in a document, page, application, or site, such as a forum
post, magazine article, or blog entry. <section> groups related
content, <div> is a generic container, and <aside> contains tangentially
related content.
Question 2
Which CSS property is used to create a grid layout that defines both
rows and columns in a single declaration?
A. grid-template
B. grid-area
C. grid-auto-flow
D. grid-gap
Correct Answer: A. grid-template
Rationale: grid-template is a shorthand for grid-template-rows and grid-
template-columns, allowing you to define both dimensions in one
,line. grid-area assigns an item to a named area, grid-auto-flow controls
auto-placement, and grid-gap sets gutters.
Question 3
In JavaScript, which statement correctly declares a block-scoped
variable that cannot be reassigned?
A. let x = 10;
B. var x = 10;
C. const x = 10;
D. static x = 10;
Correct Answer: C. const x = 10;
Rationale: const declares a block-scoped variable that cannot be
reassigned after initialization. let is block-scoped but allows
reassignment, var is function-scoped, and static is used for class
methods/properties, not standalone variables.
Question 4
Which HTTP method should be used to partially update a resource?
A. PUT
B. POST
C. DELETE
D. PATCH
Correct Answer: D. PATCH
Rationale: PATCH applies partial modifications to a resource. PUT
replaces the entire resource, POST creates a new resource or submits
data, and DELETE removes a resource.
, Question 5
What is the correct CSS syntax to select all <p> elements that are direct
children of a <div> with class "container"?
A. div.container > p
B. div.container p
C. div.container + p
D. div.container ~ p
Correct Answer: A. div.container > p
Rationale: The child combinator > selects direct children only.
Descendant selector (space) selects all nested <p>, + selects adjacent
sibling, ~ selects general siblings.
Question 6
Which JavaScript method sends an asynchronous HTTP request and
returns a Promise?
A. XMLHttpRequest
B. fetch()
C. $.ajax()
D. request()
Correct Answer: B. fetch()
Rationale: fetch() is modern, promise-based, and built into browsers for
asynchronous HTTP requests. XMLHttpRequest is callback-
based, $.ajax() is jQuery-specific, and request() is not a standard browser
API.
Question 7
Which ARIA attribute defines the current item in a set of related items,
such as a step in a wizard?
