Which 2 statements about File Storage Service (FSS) are accurate?
1) FSS leverages UNIX user group and permission checking for file access security
2) Encryption of file system in FSS is optional
3) IAM controls which file systems are mountable by which instances
4) Security lists can be used as a virtual firewall to prevent an instance from mounting an FSS mount target within the same subnet
5) Data in transit to an FSS mount target is encrypted