Northern Trail Outfitters has Imported a file Into All Subscribers. They then received a results file stating [email protected] could NOT be imported.
Which error code would the file contain for this record?

What should be confirmed to ensure Journey Builder directs the subscribers correctly?

A Marketing Cloud admin runs the Contacts Counts report and sees there are currently 500,000 contacts in their account. They have a total of 300,000 email subscribers, 200,000 synchronized contacts, and 75,000 mobile subscribers.
Why would the total contact count be less than the total number of contacts from all data sources?

Northern Trail Outfitters (NTO) has a requirement to create a distinction between marketing and transactional emails in terms of From Name and IP Address for reputation purposes.
Which two actions should NTO take in order to create Send Classifications?
Choose 2 answers

A Marketing Cloud admin is tasked with overhauling the data model for Enterprise. While the current data model is isolated to the email channel and there are plans to expand to both SMS and Push channels in the near future.
Which three data preparations should be made to retain high data quality in the new mode? Choose 3 answers.