You have an application running on EC2. When the application trying to upload a 7 GB file to S3, the operation fails. What could be the reason for failure, and what would be the solution?

Answer options:

A.With a single PUT operation, you can upload objects up to 5 GB in size. Use multi-part upload for larger file uploads.
B.EC2 is designed to work best with EBS volumes. Use EBS Provisioned IOPs and use an Amazon EBS-optimized instance.
C.NAT gateway only supports data transfers going out upto 5 GB. Use EBS Provisioned IOPs and use an Amazon EBS-optimized instance.
D.VPC Endpoints only supports data transfers going out upto 5 GB. Use EBS Provisioned IOPs and use an Amazon EBS-optimized instance.

Answer: A
AWS recommends using multi-part uploads for larger objects.
For more information on multi-part uploads, refer to documentation here. https://docs.aws.amazon.com/AmazonS3/latest/dev/mpuoverview.html
For option B, Amazon EBS is a storage for the drives of your virtual machines. It stores data as blocks of the same size and organizes them through a hierarchy similar to a traditional file system. EBS is not a standalone storage service like Amazon S3. So you can use it only in combination with Amazon EC2.
Objects can be stored on EBS volumes, but not cost-effective and not highly resilient and fault-tolerant compared to S3.
Options C and D are incorrect. NAT Gateway ad VPC endpoints do not have any data transfer limitations.