In Amazon Cognito what is a silent push notification?

A.
It is a push message that is received by your application on a user’s device that will not be seen
by the user.

B.
It is a push message that is received by your application on a user’s device that will return the
user’s geolocation.

C.
It is a push message that is received by your application on a user’s device that will not be heard
by the user.

D.
It is a push message that is received by your application on a user’s device that will return the
user’s authentication credentials.

Explanation:
Amazon Cognito uses the Amazon Simple Notification Service (SNS) to send silent push
notifications to devices. A silent push notification is a push message that is received by your
application on a user’s device that will not be seen by the user.
http://aws.amazon.com/cognito/faqs/