CRT-450 Practice Exam Questions and Answers

A developer has identified a method in an Apex class that performs resource intensive actions in memory by iterating over the result set of a SOQL statement on the account. The method also performs a DML statement to save the changes to the database.

Which two techniques should the developer implement as a best practice to ensure transaction control and avoid exceeding governor limits'*

Choose 2 answers

A Primaryld_c custom field exists on the Candidate _c¢ custom object. The field is used to store each candidate's id number and is marked as Unique in the schema definition.

As part of a data enrichment process, Universal Containers has a CSV file that contains updated data for all candidates in the system. The file contains each Candidate's primary .. as a data point. Universal Containers wants to upload this information into Salesforce, while ensuring all data rows are correctly mapped to a candidate in the system.

Which technique should the developer implement to streamline the data upload?

A developer is creating a page that allows users to create multiple Opportunities. The developer is asked to verify the current user's default Opportunity record type, and set certain default values based on the record type before inserting the record.

How can the developer find the current user's default record type?

As part of new feature development, a developer is asked to build a responsive application capable of responding to touch events, that will be executed on stateful clients.

Which two technologies are built on a framework that fully supports the business requirement? Choose 2 answers

A developer is tasked to perform a security review of the ContactSearch Apex class that exists in the system. Within the class, the developer identifies the following method as a security threat:

ist performSearch (String lastName} [

return Database.query('SELECT Id, FirstName, LastName FROM Contact WHERE LastName Like

s'+lastName+'s'")?;

What are two ways the developer can update the method to prevent a SOQL injection attack?

Choose 2 answers

What are two benefits of using declarative customizations over code?

Choose 2 answer

Which scenario is valid for execution by unit tests?

A developer must troubleshoot to pinpoint the causes of performance issues when a custom page loads in their org.

Which tool should the developer use to troubleshoot query performance?

While developing an Apex class with custom search functionality that will be launched from a Lightning Web Component, how can the developer ensure only records accessible to the currently logged in user are displayed?

Which three data types can a SOQL query return?

Choose 3 answers