A. Secure access to your ec2 amis is controlled by passwords, kerberos, and 509 certificates
B. Most of the system image templates that amazon aws offers are based on red hat linux
C. Security can be set through passwords, kerberos tickets, or certificates
D. All of the above
Explanation
"Security can be set through passwords, kerberos tickets, or certificates, Secure access to your EC2 AMIs is controlled by passwords, Kerberos, and 509 certificates, and Most of the system image templates that Amazon AWS offers are based on Red Hat Linux." all are the correct statements.
