MuleSoft Developer Exam

When do variables persist? - Answer- Variables persist through all flows unless the event crosses a transport boundary (e.g. making a http request to another flow) T/F: Subflows can have their own error handling strategy - Answer- False Syntax to fetch a variable - Answer- #[] What persists when calling from a parent flow to another flow via http request? - Answer- Not variables API Interface definition file (API Specification) - Answer- defines what you call, what you send it, and what you get back A Web Service - Answer- The Actual API implementation you can make calls to or interface of that API implementation An API Proxy - Answer- An application that controls access to the web service, restricting access, and usage through an API gateway What persists when calling from a parent flow to another flow via flow reference? - Answer- Variables JMS connector - Answer- connector capable of sending and receiving messages to and from topics and queues JMS Publish - Answer- Operation that allows the user to send a message to a JMS Destination JMS Publish - Consume - Answer- Operation that allows the user to send a message to a JMS Destination and waits for response either to the provided replyTo destination or to a dynamically created Language for Choice Decisions - Answer- dataweave #[ != 0] Execution order of functions - Answer- the last function in the chain is executed first Calling flows from a DW Expression - Answer- use the lookup function {a: lookup("myFlow",{b:"Hello"})} How to import a function in a module - Answer- import dasherize from dw::core::Strings How to import a module - Answer- import dw::core::Strings You can call subflows from a dataweave expressions - Answer- false map - Answer- Iterates over items in an array and outputs the results into a new array. Scatter gather output - Answer- returns a collection of all results, collection is an object of objects each object contains attributes and payload validation module - Answer- can use to check whether something has or not been met and you can halt the flow if that condition has not been met Mule defualt error handler - Answer- used if no error handler defined implicitly and globally handles all messaging errors thrown in Mule applications stops execution of the flow and logs information about the error cannot be configured Error object properties - Answer- iption = string error.e