A developer wants to include an AMPscript if/else statement in an email to satisfy the condition "if the subscriber's tier is not premier then display heading encouraging them to upgrade." The tier value has already been set as variable named @level. How should the developer write this AMPscript conditional statement?

What is the purpose of the IF statement below?

Certification Aid wants to add records to a Data Extension using the SOAP API. Which object can be used for this? Choose 1.

A developer is writing a query to select unique subscribers who opened any emails sent since the beginning of the previous day.
Which query would provide that result?
A)

B)

C)

A developer is creating a CloudPage which accepts secure parameters via an email link and will submit those parameters to another CloudPage for data upsert. The page currently captures an Appointment ID parameter passed into it and sets the value to the variable caapptld. The developer does NOT want the Appointment ID to be visible to anyone using the form.
What is the best method to ensure the parameters are passed successfully to the data upsert page?