Certification Aid wants to add new customers to a cross-channel welcome campaign when they register on the company website. Which API should be used for this? Choose 1.

A developer started a Contact Delete process that is now complete.
In which two places would the Contact Delete process remove data? Choose 2 answers

A developer uses an API to send data to a Marketing Cloud data extension once every five minutes using the REST API. They notice data does not always write to the data extension, leading to data loss.
Which three best practices are recommended to avoid this issue? Choose 3 answers

A developer wants to create a Send Log Data Extension to increase efficiency with tracking email sends.
Which two best practices should the developer remember when configuring the Send Log Data Extension? Choose 2 answers

Adeveloper wants to retrieve daily JSON data from a customer's API and write it to a data extension for consumption in Marketing Cloud at a later time.
What set of Server-Side JavaScript activities should the developer use?