WGU C770A WEB DEVELOPMENT APPLICATIONS –
OBJECTIVE ASSESSMENT COMPREHENSIVE
PRACTICE EXAM LATEST UPDATED 2026-2027 ACTUAL
FINAL EXAM WITH ALL POSSIBLE AND WELL
ELABORATED 100 PRACTICE QUESTIONS AND 100%
CORRECT VERIFIED ANSWERS FULLY SOLVED PLUS
DETAILED RATIONALES INCLUDING EXPERT
ANSWER KEY (COMPLETE A+ SOLUTIONS) NEWLY
UPDATED VERSION FULL REVISED RATED A+ BRAND
NEW!!!
1. Which HTTP method is idempotent and safe?
A) POST
B) PUT
C) DELETE
D) GET
Correct Answer: D) GET
Rationale: GET is both safe (no side effects) and
idempotent (repeating same request yields same
,result). POST is neither. PUT and DELETE are
idempotent but not safe.
2. In a RESTful API, what status code indicates a
resource was created successfully?
A) 200 OK
B) 201 Created
C) 204 No Content
D) 302 Found
Correct Answer: B) 201 Created
Rationale: 201 is the standard response for
successful resource creation, often with a Location
header.
3. Which CSS selector targets all <p> elements inside
a <div>?
A) div p
B) div > p
C) div + p
D) div ~ p
Correct Answer: A) div p
,Rationale: The descendant selector (space) targets
any <p> nested inside <div>, regardless of depth.
4. What does the CSS property display: flex do to a
container?
A) Makes elements stack vertically
B) Enables a flexible box layout for children
C) Hides all child elements
D) Sets fixed width for children
Correct Answer: B) Enables a flexible box layout for
children
Rationale: display: flex turns the container into a
flex container, allowing flexible alignment and
distribution of child items.
5. Which JavaScript method converts a JSON string
into a JavaScript object?
A) JSON.stringify()
B) JSON.parse()
C) JSON.convert()
D) JSON.toObject()
, Correct Answer: B) JSON.parse()
Rationale: JSON.parse() parses a JSON string and
constructs the corresponding JavaScript value or
object.
6. In Express.js, which method is used to define a
route for HTTP PUT requests?
A) app.post()
B) app.get()
C) app.put()
D) app.use()
Correct Answer: C) app.put()
Rationale: Express provides app.put() to handle
PUT requests, typically for updating resources.
7. Which status code indicates that the request was
successful and no content is returned?
A) 200
B) 201
C) 204
D) 404
OBJECTIVE ASSESSMENT COMPREHENSIVE
PRACTICE EXAM LATEST UPDATED 2026-2027 ACTUAL
FINAL EXAM WITH ALL POSSIBLE AND WELL
ELABORATED 100 PRACTICE QUESTIONS AND 100%
CORRECT VERIFIED ANSWERS FULLY SOLVED PLUS
DETAILED RATIONALES INCLUDING EXPERT
ANSWER KEY (COMPLETE A+ SOLUTIONS) NEWLY
UPDATED VERSION FULL REVISED RATED A+ BRAND
NEW!!!
1. Which HTTP method is idempotent and safe?
A) POST
B) PUT
C) DELETE
D) GET
Correct Answer: D) GET
Rationale: GET is both safe (no side effects) and
idempotent (repeating same request yields same
,result). POST is neither. PUT and DELETE are
idempotent but not safe.
2. In a RESTful API, what status code indicates a
resource was created successfully?
A) 200 OK
B) 201 Created
C) 204 No Content
D) 302 Found
Correct Answer: B) 201 Created
Rationale: 201 is the standard response for
successful resource creation, often with a Location
header.
3. Which CSS selector targets all <p> elements inside
a <div>?
A) div p
B) div > p
C) div + p
D) div ~ p
Correct Answer: A) div p
,Rationale: The descendant selector (space) targets
any <p> nested inside <div>, regardless of depth.
4. What does the CSS property display: flex do to a
container?
A) Makes elements stack vertically
B) Enables a flexible box layout for children
C) Hides all child elements
D) Sets fixed width for children
Correct Answer: B) Enables a flexible box layout for
children
Rationale: display: flex turns the container into a
flex container, allowing flexible alignment and
distribution of child items.
5. Which JavaScript method converts a JSON string
into a JavaScript object?
A) JSON.stringify()
B) JSON.parse()
C) JSON.convert()
D) JSON.toObject()
, Correct Answer: B) JSON.parse()
Rationale: JSON.parse() parses a JSON string and
constructs the corresponding JavaScript value or
object.
6. In Express.js, which method is used to define a
route for HTTP PUT requests?
A) app.post()
B) app.get()
C) app.put()
D) app.use()
Correct Answer: C) app.put()
Rationale: Express provides app.put() to handle
PUT requests, typically for updating resources.
7. Which status code indicates that the request was
successful and no content is returned?
A) 200
B) 201
C) 204
D) 404
