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A corporate web application is deployed within an Amazon VPC, and is connected to the corporate data center via IPSec
VPN. The application must authenticate against the on-premise LDAP server. Once authenticated, logged-in users can
only access an S3 keyspace specific to the user. Which two approaches can satisfy the objectives? Choose 2 answers.

A.
The application authenticates against LDAP. The application then calls the IAM Security Service to login to IAM using the LDAP
credentials. The application can use the IAM temporary credentials to access the appropriate S3 bucket.

B.
The application authenticates against LDAP, and retrieves the name of an IAM role associated with the user. The application then calls
the IAM Security Token Service to assume that IAM Role. The application can use the temporary credentials to access the appropriate
S3 bucket.

C.
The application authenticates against IAM Security Token Service using the LDAP credentials. The application uses those temporary
AWS security credentials to access the appropriate S3 bucket.

D.
Develop an identity broker which authenticates against LDAP, and then calls IAM Security Token Service to get IAM federated user
credentials. The application calls the identity broker to get IAM federated user credentials with access to the appropriate S3 bucket.

E.
Develop an identity broker which authenticates against IAM Security Token Service to assume an IAM Role to get temporary AWS
security credentials. The application calls the identity broker to get AWS temporary security credentials with access to the appropriate
S3 bucket.

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