Which of the following is a prerequisite for configuring single sign-on for authentication using LTPA cookies?

A.
All server must use the same IBM HTTP Server.

B.
All servers must be configured as part of the same DNS domain.

C.
All servers must use an IBM Domino Directory that is configured for LDAP access.

D.
All servers must be managed by the same IBM WebSphere Application Server Deployment Manager.

Explanation:
To take advantage of support for SSO between WebSphere Application Servers or between WebSphere
Application Server and a Domino server, applications must meet the following prerequisites and conditions:
* Verify that all servers are configured as part of the same DNS domain.
* Etc.
https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/
csec_sso.html