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IBM WebSphere Application Server Network Deployment V8.5, Core Administration Sample Questions:

1. A system administrator observed a decreased performance of a web application. During investigation, the system administrator found that there were frequent garbage collections. A WebSphere Application Server is running on 32-bit platform with 8GB of memory, and with default settings for the JVM. What does the system administrator need to change to improve performance?

A) Increase the JVM maximum and the initial heap size.
B) Change the garbage collection policy to "balanced".
C) Update the operating systemparameters to make more memory available for the JVM.
D) Increase the JVM maximum heap size and use the "balanced" garbage collection policy.

2. A system administrator needs to install IBM Installation Manager on a remote host using Flexible management. To do so, on which host machine should the system administrator download the Installation Manager "kits"? (choose 2)

A) Remote host
B) Job Manager
C) On Demand Router
D) Administrative Agent
E) Deployment Manager

3. An administrator needs to move an application from a Liberty profile development environment to a production Network Deployment cell. What steps should the administrator take to deploy the application in the production cell?

A) Use the "Release" functionality in the administrative console and point it to the server.xml file of the development Liberty profile.
B) Deploy the application EAR file through the deployment manager and define the resources defined in the server.xml.
C) Use the enhanced EAR generated by the Liberty profile ensuring that the resources used by the Liberty profile are used by the deployment manager.
D) Use the migration tool to generate the customizedand automated wsadmin script.

4. After deploying a new application to a high load production system, a memory leak has been detected which causes OutOfMemory exceptions. After fixing this, a system administrator needs to gather JVM heap dumps and restart the server in case a memory leak is detected in the future. How should the system administrator handle this without writing a script? Create a health policy which will:

A) use the Job Manager to put server in maintenance mode, gather JVM heap dump and restart the server.
B) take the server out of maintenance mode, gather JVM heap dump and restart the server.
C) put the server in maintenance mode, gather JVM heap dump and restart the server.
D) send the SNMP trap to generate the heap dump and restart the server.

5. In a test environment, a system administrator has configured an external HTTP in the DMZ that is routing to a cluster of application servers. The administrator wants to achieve high results and performance when routing and prioritizing incoming requests to the back-end cluster. How can the system administrator achieve this task?

A) Enable the prefer local option on the cluster members.
B) Configure a cluster of external HTTP servers.
C) Setup a Caching Proxy server between theexternal web server and the application server.
D) Place an On Demand Router (ODR) between the external web servers and the application servers.

Solutions: