A new cell contains a cluster with members defined in two managed nodes running on two different machines. The cell also contains two unmanaged nodes running on HTTP servers with HTTP plug-in. Session persistence has been enabled.
Which additional component(s) can the system administrator configure to make this environment highly available?
An application deployed to a multi-node cluster is reported to have slowness and hung threads. A system administrator is asked to review the logs on each node and identify if the hung threads are a false alarm.
How can the administrator determine that the hung threads are a false alarm?
Analyze the:
A system administrator has started a Liberty profile server using the default values. Later, the administrator modified the server.xml file for the server to include
dropins=”${server.config.dir}/applications” dropinsEnabled=”true”/> The administrator placed the application ServletApp.war in the apps directory under ${server.config.dir}. While accessing the correct URL for the home page of the application, the error “Context Root Not Found” occurs in the browser. How can the administrator resolve this error?
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 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?
A system administrator needs to set a new Liberty profile environment to support an application.
What should the administrator do to enable this environment for high availability and scalability of the application?
A system administrator is required to monitor the application server logs for heap memory issues and determine if the heap memory usage is reaching close to 70% of the maximum heap. The application server is configured with an initial heap of 256 MB and a max heap of 1 GB.
How should the administrator determine if the application server is utilizing 70% of the max allocated heap memory?
A system administrator has created a cluster containing two servers in a same node. The administrator did not select the option Generate unique HTTP ports during the creation of the cluster members. After the cluster creation, the administrator changed the HTTP port of the second cluster member to 9081.
Testing the servers using the snoop servlet directly to the server’s HTTP port, the administrator got the following error message for the second server:
How can the administrator fix this problem?
A system administrator has installed WebSphere Application Server Network Deployment V8.5.5 using the silent installation process and needs the verify that the installation completed successfully.
What does the administrator need to do to verify a successful installation?
TESTED 22 Feb 2025
