A developer is writing tests for a class and needs to insert records to validate functionality.
Which annotation method should be used to create record for every method in the test class?

A developer creates a method in an Apex class and needs to ensure that errors are handled properly.What would the developer use? (There are three correct answers.)

What are two considerations for custom Apex Exception classes? Choose 2 answers.

An after trigger on the account object performs a DML update operation on all of the child opportunities of an account. There are no active triggers on the opportunity object, yet a "maximum trigger depth exceeded" error occurs in certain situation. Which two reasons possibly explain the account trigger firing recursively? choose 2 answers

As a part of class implementation a developer must execute a SOQL query against a large data ser based on the contact object. The method implementation is as follows.

Which two methods are best practice to implement heap size control for the above code? (Choose 2 Answers)