The services within a domain service inventory provide access to confidential data retrieved from a shared database. These services need to be accessible from outside the domain service inventory. Which of the following design options will preserve the confidentiality of the data when the services are accessed from outside the service inventory?

Security specialists are planning to implement public key cryptography in order to encrypt messages exchanged between Service A and Service B. Which of the following options fulfills this requirement?

Username and X.509 token profiles can be combined so that a single message can contain a username token that is digitally signed.