Which three factors negatively affect an IP address' sender reputation? (Choose three.)

An integration updates a custom data object that uniquely maps to contacts within Eloqua using an email address. When net-new contacts are created via the integration, the contact is created with the accurate field values. However, subsequent updates to mapped fields of the custom object records are NOT reflected on the contact.
What is the cause of this? (Choose the best answer.)

Which three are required to successfully integrate an externally hosted form into a client's website? (Choose three.)

You have activated a new program on the Program Canvas to time stamp the "Most Recent Event Attendance" date field for event attendees. A segment has been created to pull in recent event attendees into the program. Upon review, you notice that the event attendees for a particular event are entering the program every day and being restamped.
What is the cause for this? (Choose the best answer.)

It is 7:00 PM and you notice you have received numerous error notification emails regarding the Import of Leads into Eloqua between the hours of 3:00 PM and 5:00 PM, no error notifications have been received since 5:00 PM and the integration has been running successfully since 5:00 PM.
Which statement is true? (Choose the best answer.)