- A
They require WebSockets for communication.
Why wrong: REST primarily uses HTTP/HTTPS, not WebSockets.
- B
They use HTTP methods to perform CRUD operations.
GET, POST, PUT, DELETE map to read, create, update, delete.
- C
They use SOAP as the message format.
Why wrong: SOAP is a different protocol, not typical for REST.
- D
They use stateless communication.
Each request from client to server must contain all the information needed.
- E
They expose resources via URLs.
Each resource is identified by a unique URI.
Question 809 of 1,000
200-901 Software Development and Design Practice Question
This 200-901 practice question tests your understanding of software development and design. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE statements about RESTful APIs are true?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
They use HTTP methods to perform CRUD operations.
Option B is correct because RESTful APIs use standard HTTP methods (GET, POST, PUT, PATCH, DELETE) to map directly to CRUD (Create, Read, Update, Delete) operations. For example, POST creates a resource, GET retrieves it, PUT/PATCH updates it, and DELETE removes it, aligning with the REST architectural constraint of uniform interface.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
They require WebSockets for communication.
- ✓
They use HTTP methods to perform CRUD operations.
Why this is correct
GET, POST, PUT, DELETE map to read, create, update, delete.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
They use SOAP as the message format.
Why it's wrong here
SOAP is a different protocol, not typical for REST.
- ✓
They use stateless communication.
Why this is correct
Each request from client to server must contain all the information needed.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
They expose resources via URLs.
Why this is correct
Each resource is identified by a unique URI.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that REST requires WebSockets for real-time communication or that REST is tied to SOAP, when in fact REST is protocol-agnostic but typically uses HTTP, and SOAP is a distinct, heavier-weight alternative.
Detailed technical explanation
How to think about this question
Under the hood, RESTful APIs leverage the stateless nature of HTTP, meaning each request from a client contains all necessary information (e.g., authentication tokens, resource identifiers) and the server does not store client context between requests. This constraint improves scalability and reliability, as any server can handle any request without session affinity. In real-world scenarios, this is critical for microservices architectures where load balancers distribute requests across multiple instances without requiring sticky sessions.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 200-901 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this 200-901 question test?
Software Development and Design — This question tests Software Development and Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: They use HTTP methods to perform CRUD operations. — Option B is correct because RESTful APIs use standard HTTP methods (GET, POST, PUT, PATCH, DELETE) to map directly to CRUD (Create, Read, Update, Delete) operations. For example, POST creates a resource, GET retrieves it, PUT/PATCH updates it, and DELETE removes it, aligning with the REST architectural constraint of uniform interface.
What should I do if I get this 200-901 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This 200-901 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-901 exam.
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