A system administrator has deployed an application. The development team has updated a new version of this application. The administrator needs to immediately deploy this updated application and guarantee that only this new edition is used by clients and that any service requests for the application are queued during the deployment of the new application.
How can the administrator achieve this task without any downtime to the application?

1. A. Perform a soft rollout.
2. B. Perform a hard rollout.
3. C. Perform an atomic rollout.
4. D. Perform a concurrent activation rollout.

Correct Answer: C
Performing an atomic rollout activates the new edition on half of the cluster first, and then activates the edition on the remaining half of the cluster. While the first half of the cluster is taken offline and updated, application requests are routed to the second half of the cluster. Verify that half the cluster can handle the entire load during the rollout period.
References: http://www.aiotestking.com/ibm/how-can-the-administrator-achieve-this-task-without-any-downtime-to-the-application/

A system administrator has added a server cluster as a member of a service integration bus (SIB). The administrator needs to configure one messaging engine for each server in this cluster and to have a failover location for each messaging engine.
What should the administrator do to achieve the required design?

1. A. Configure a new messaging engine in each server to support failover.
2. B. Configure the data store for each messaging engine for each server in the cluster.
3. C. Select scalability with high availability as the messaging engine policy.
4. D. Create a core group policy to restrict each messaging engine to a particular server.

Correct Answer: C
The scalability with high availability configuration ensures that there is a messaging engine for each server in a cluster, and that each messaging engine has a failover location.
http://www- 01.ibm.com/support/knowledgecenter/SSCKBL_8.5.5/com.ibm.websphere.nd.doc/ae/cjt10 04_.html (second paragraph)

Which one of the following options describes the runtime flow starting from the client browser in a clustered WebSphere Application Server Network Deployment topology?

1. A. HTTP server -> job manager -> admin agent -> HTTP server plug-in
2. B. Load balancer -> HTTP server -> HTTP server plug-in -> application server
3. C. Application server -> node agent -> deployment manager -> load balancer
4. D. Deployment manager -> node agent -> HTTP server plug-in -> HTTP server

Correct Answer: B

A system administrator decides to use the advice from the Performance and Diagnostic Advisor to identify the optimum connection pool settings for data sources. In a cell, the data source db2datasource is defined under node scope and used by two servers from that node. The administrator receives two different sets of advice for db2datasource.
How should the administrator configure the data sources before reusing the Performance and Diagnostic Advisor?

1. A. Create a data source of the same name under cell scope.
2. B. Create a data source of the same name under server scope for each server.
3. C. Increase the minimum connection pool size for the data source.
4. D. Decrease the maximum connection pool size for the data source.

Correct Answer: B
References: https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.nd.doc
/ae/cprf_rpa.html

A customer has enabled LTPA as their authentication mechanism and has web resources that are not secured by proper security constraints. A system administrator is required to ensure that all web resources are secured.
How should the administrator accomplish this?

1. A. Enable “Authenticate when any URI is accessed”.
2. B. Enable “Authenticate only when the URI is protected”.Disable “Use available authentication data when an unprotected URI is accessed”.
3. C. Enable “Authenticate only when the URI is protected”.Enable “Use available authentication data when an unprotected URI is accessed”.
4. D. Map the application security roles to the configured user registry’s groups.

Correct Answer: A
Authenticate only when the URI is protected
The application server challenges the web client to provide authentication data when the web client accesses a Uniform Resource Identifier (URI) that is protected by a Java Platform, Enterprise Edition (Java EE) role. The authenticated identity is available only when the web client accesses a protected URI.
This option is the default Java EE web authentication behavior that is also available in previous releases of WebSphere® Application Server.
References: https://www.ibm.com/support/knowledgecenter/SSAW57_8.5.5/com.ibm.websphere.base.d oc/ae/usec_webauth.html