Salesforce DEX-450 Online Practice Questions and Exam Preparation

Salesforce DEX-450 Online Questions & Answers

• Question 41:

  What is a good practice for a developer to follow when writing a trigger? (Choose 2)

  A. Using @future methods to perform DML operations.
  B. Using the Map data structure to hold query results by ID.
  C. Using the Set data structure to ensure distinct records.
  D. Using synchronous callouts to call external systems.
  B. Using the Map data structure to hold query results by ID.
  C. Using the Set data structure to ensure distinct records.

• Question 42:

  Given the code block: Integer x; For(x=0;x<10; x+=2) { If(x==8) break; If(x==10) break; } System.debug(x); Which value will the system debug statement display?

  A. 2
  B. 10
  C. 8
  D. 4
  C. 8

• Question 43:

  When would the use of Heroku Postgres be appropriate?

  A. To cache commonly accessed data for faster retrieval.
  B. To interconnect Microsoft SQL servers to Heroku Applications.
  C. To store and retrieve data using the Structured Query Language.
  D. To store user generated pictures and Word documents.
  C. To store and retrieve data using the Structured Query Language.

• Question 44:

  A Visualforce page has a standard controller for an object that has a lookup relationship to a parent object. How can a developer display data from the parent record on the page?

  A. By adding a second standard controller to the page for the parent record.
  B. By using a roll-up formula field on the child record to include data from the parent record.
  C. By using SOQL on the Visualforce page to query for data from the parent record.
  D. By using merge field syntax to retrieve data from the parent record.
  D. By using merge field syntax to retrieve data from the parent record.

• Question 45:

  How many levels of child records can be returned in a single SOQL query from one parent object?

  A. 1
  B. 3
  C. 5
  D. 7
  A. 1

• Question 46:

  The values 'High', 'Medium', and 'Low' are Identified as common values for multiple picklist across different object. What is an approach a developer can take to streamline maintenance of the picklist and their values, while also restricting the values to the ones mentioned above?

  A. Create the Picklist on each object and use a Global Picklist Value Set containing the Values.
  B. Create the Picklist on each object as a required field and select "Display values alphabeticaly, not in the order entered".
  C. Create the Picklist on each object and select "Restrict picklist to the values defined in the value set".
  D. Create the Picklist on each and add a validation rule to ensure data integrity.
  A. Create the Picklist on each object and use a Global Picklist Value Set containing the Values.

• Question 47:

  What are two ways a developer can get the status of an enquered job for a class that queueable interface? Choose 2 answers

  A. View the apex status Page
  B. View the apex flex Queue
  C. View the apex Jobs page (Missed)
  D. Query the AsyncApexJobe object (Missed)
  C. View the apex Jobs page (Missed)
  D. Query the AsyncApexJobe object (Missed)

• Question 48:

  To which primitive data type is a text area (rich) field automatically assigned?

  A. Text
  B. Blob
  C. Object
  D. String
  D. String

• Question 49:

  Universal Containers (UC) has an integration with its Accounting system that creates tens of thousands of Orders inside of Salesforce in a nightly batch. UC wants to add automaton that can attempt to match Leads and Contacts to these Orders using the Email Address field on the insert. UC is concerned about the performance of the automation with a large data volume. Which tool should UC use to automate this process?

  A. Process Builder
  B. Process Builder with an Autolaunched Flow
  C. Workflow Rules
  D. Apex
  D. Apex

• Question 50:

  A developer needs to prevent the creation of request records when certain conditions exist in the system. A RequestLogic class exists to checks the conditions. What is the correct implementation?

  A. Trigger RequestTrigger on Request (after insert) { RequestLogic.validateRecords {trigger.new}; }
  B. Trigger RequestTrigger on Request (before insert) { RequestLogic.validateRecords {trigger.new}; }
  C. Trigger RequestTrigger on Request (before insert) { if (RequestLogic.isvalid{Request}) Request.addError {'Your request cannot be created at this time.'}; }
  D. Trigger RequestTrigger on Request (after insert) { if (RequestLogic.isValid{Request}) Request.addError {'Your request cannot be created at this time.'}; }
  B. Trigger RequestTrigger on Request (before insert) { RequestLogic.validateRecords {trigger.new}; }