Which two statements are true about an External ID field? Choose 2 answers

An app Builder creates an Account validation rule on the Industry field that will throw an error if the length of the field is longer than 6 characters. Another App Builder creates a workflow rule with a field update that sets the Industry field to Technology whenever the Billing City field is set to San Francisco. What will happen the next time a sales person saves an Account with a Billing City of San Francisco?

DreamHouse Realty is building a custom Lightning app to track its expanding solar water collection business. The Lightning app currently contains a custom Lightning record page with standard components.
From which two resources should an app builder get custom components to bring into the new Lightning app?
Choose 2 answers

What is a use case for validation rules?

What should an app builder consider when choosing a template for a new Lightning record page?