A marketing Cloud admin wants to ensure sensitive information needed for email sends is NOT imported and stored in Marketing cloud. What solution should they implement?

A Marketing Cloud admin is asked by the marketing team to ensure a default Header and Footer be added to emails.
Where under Setup could this be created?

Northern Trail Outfitters (NTO) is concerned about unauthorized API access to their Marketing Cloud account.
Which feature would NTO enable to assist in reducing threats from malicious API attacks?

The Northern Trail Outfitters (NTO) marketing team is launching a new email campaign. NTO's Email Specialist wants to perform quality assurance checks on the email prior to send and has asked about using the Validate functionality for this effort.
Which three items will Validate check in an email message?
Choose 3 answers

Northern Trail Outfitters has Marketing Cloud users who need data extension View and Update permissions for campaigns related to B3C sales, out not any permissions for campaigns related to B2B sales.
How should they accomplish this?