Leveraging this feature with Walk-Up Experience can eliminate the need for users to manually look up their name or email to join a walk-up queue.

How many columns can a formatter contain in a variable set?

Universal Containers uses Big Objects to store almost a billion customer transactions called Customer_Transaction__b.
These are the fields on Customer_Transaction__b:
Account__c
Program__c
Points_Earned__c
Location__c
Transaction_Date_c
The following fields have been identified as Index Fields for the Customer_Transaction__b object: Account__c, Program__c, and Transaction_Date__c.
Which SOQL query is valid on the Customer_Transaction__b Big Object?

An Apex Trigger creates a Contract record every time an Opportunity record is marked as Closed and Won.
This trigger is working great, except (due to a recent acquisition) historical Opportunity records need to be loaded into the Salesforce instance.
When a test batch of records are loaded, the Apex Trigger creates Contract records. A developer is tasked with preventing Contract records from being created when mass loading the Opportunities, but the daily users still need to have the Contract records created.
What is the most extendable way to update the Apex Trigger to accomplish this?

Which of the following is NOT a valid On Hold reason?