FC0-U71 Software Development Concepts Practice Question
Which of the following best describes the purpose of a REST API?
⚠ Common exam trap
CompTIA often tests the misconception that REST APIs are used for building user interfaces or managing databases, when in fact they are purely a communication protocol between software systems.
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
✓
To allow software applications to communicate with each other
A REST API (Representational State Transfer Application Programming Interface) is a set of architectural constraints that enables software applications to communicate over HTTP using standard methods like GET, POST, PUT, and DELETE. It allows different systems, often written in different languages, to exchange data in formats such as JSON or XML, making it the correct choice for enabling inter-application communication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To compile source code into executable programs
Why it's wrong here
Compilation is done by compilers, not APIs.
- ✓
To allow software applications to communicate with each other
Why this is correct
REST APIs enable communication between software systems.
- ✗
To create a graphical user interface
Why it's wrong here
APIs are not for GUIs; they enable programmatic communication.
- ✗
To define a database schema
Why it's wrong here
Database schemas are defined separately, not by REST APIs.
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Same concept, more angles
1 more way this is tested on FC0-U71
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which of the following best describes the function of a web API?
hard- A.It encrypts data transmitted between a web browser and server.
- B.It is a programming language used to query databases.
- C.It provides a graphical user interface for web applications.
- ✓ D.It allows different software applications to communicate and exchange data.
Why D: A web API (Application Programming Interface) allows different software applications to communicate and share data over the internet. It is not a user interface, security tool, or database language.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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