Creating Application Networks7% of the exam

Application networks and modern API concepts

What an application network is and why each reusable API makes the next project faster, the three qualities of a modern API, how a web service differs from an API, and when an API is internal, partner or external.

Official exam objective
Identify core architectural concepts of the Application Network and modern APIs.

~7 min read · 5 practice questions ·

What the exam expects

  • Pick the correct definition of an application network and reject look-alikes (a message broker, a VPN, nightly file copies).
  • Explain why delivery speeds up as an application network grows: each API becomes a reusable asset for the next project.
  • Name the three qualities of a modern API and spot options that contradict them.
  • Separate APIs from web services: every web service is an API, not every API is a web service.
  • Choose internal, partner or external access for an API from who must call it.

Key terms:

  • Application network: applications, data and devices connected through reusable, governed APIs that other consumers can discover and use.
  • Modern API: an API that is discoverable and accessible, productized and reusable, and managed for security and performance.
  • Web service: a specific type of API that communicates over a network using web protocols.
  • Partner API: an API that specific outside organizations reach with exclusive permissions.

Key facts

Application network definition
Detail
Connects applications, data and devices in a reusable, scalable, governed way
Network building blocks
Detail
APIs, used as standardized, reusable building blocks instead of single-use integrations
Network is not an architecture
Detail
A set of building blocks on top of which architectures are built
Agility measure
Detail
How many consumers get value, not how many assets exist
Three modern API qualities
Detail
Discoverable and accessible; productized and reusable; managed for security and performance
API forms in the network
Detail
REST, SOAP and database APIs
Web service vs API
Detail
All web services are APIs; not all APIs are web services
SOAP transports
Detail
HTTP, and also JMS, FTP and SMTP
Partner API
Detail
Specific outside organizations, exclusive permissions
External API
Detail
Third-party developers, self-service basis
Sources for this section (4)
  • Why does MuleSoft say counting the assets on an application network is the wrong measure of agility?
  • Why does a custom Salesforce-to-SAP integration that is on time and on budget still add no leverage?
  • Which example list names XML-RPC services, and what does that list describe?
  • When is an API internal rather than external?

The questions are free to read. Answers with their sources and self-grading are included with the pack.

Keep reading with the MuleSoft Developer pack

  • Core concepts
  • Exam traps
  • Worked scenario

The pack includes:

  • All 40 lessons of the MuleSoft Developer guide, with reading progress
  • Interactive decision walks and step-by-step sequence steppers
  • Practice exams purchase adds inline bank questions and topic practice (5 questions for this lesson)
  • An official source cited for every claim
  • An AI tutor that answers from the guide
  • Unlimited timed practice exams

Practice for the MuleSoft Developer exam