A web application was deployed on a WebSphere Application Server cluster. While users are using the application, one of the cluster servers fails and the users lose their working data.
What can the system administrator configure to ensure users can continue to work if one of the cluster server fails?

• A. A load balancer to spread work between existing servers.
• B. An increased session timeout.
• C. A WebSphere eXtreme Scale HTTP session management.
• D. A cluster of external HTTP servers.

A system administrator has deployed web applications to a clustered environment where database session persistence is configured. The administrator needs to improve the response time and the throughput.
How can the system administrator do this?

• A. Configure dynamic caching.
• B. Configure a load balancer to spread work between existing web servers.
• C. Disable server affinity.
• D. Tune the database session persistence to optimize for failover.

While monitoring a cluster in the cell, the administrator notices that one server in the cluster periodically loses connections to the database. When this happens, requests to the server have a significantly decreased response time and various error conditions are listed in the log files for the server. Since the error codes are returned quickly, the server starts returning responses faster than the average service times for the application. Due to this, the weight for the server is increased and a large percentage of incoming requests are being routed to the erroneous server and the server is getting overloaded with requests.
How can the administrator detect these conditions in the future and take action to prevent this problem?

• A. Monitor the JVM heap usage to determine a new server weight.
• B. Configure the on demand router (ODR) transport chain to tune inbound connections.
• C. Enable the PMI Extended statistic set and use the Connection Pool summary report.
• D. Configure the storm drain health policy.

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?

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

A system administrator needs to deploy a new enterprise application which requires that application security be enabled, but, the existing applications in the cell cannot be executed with application security enabled. The cell has the global security and Java 2 security disabled.
How can the administrator handle this requirement?

• A. Enable administrative security for the cell.Create a security domain with application security enabled.Associate the security domain at the application level for the new application.
• B. Enable Java 2 security for the cell.Create a security domain with application security enabled.Associate the security domain to a new cluster to be used to deploy the new application.
• C. Enable administrative security for the cell.Create a security domain with application security enabled.Associate the security domain to the new cluster where the new application is deployed.
• D. Enable Java 2 security for the cell.Create a security domain with application security enabled.Associate the security domain to the new application.