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| 000-253 exam is known as IBM Test253. IBM | | | | caches |
| WebS.App.Svr.Ntwork Develoyment V6.1.Core Admn | | | | Answer: AB |
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| The details of real 000-253 exam: | | | | Answer: AB |
| Duration: 105 minutesnumber of questions: 108 | | | | 7. In a WebSphere cell configuration, which |
| questions | | | | component is a single point of failure? |
| 000-253 passing score: 66%-80% | | | | A. Deployment manager |
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| ? | | | | 8. Which approach should be recommended when |
| Exam : IBM 000-253 | | | | designing a production topology for WebSphere |
| Title : Test253. IBM WebS.App.Svr.Ntwork | | | | application servers providing high availability and |
| Develoyment V6.1.Core Admn | | | | failover capabilities? |
| 1. Which services are implemented by the | | | | A. Create a design using multiple machines that handle |
| WebSphere application server? | | | | the full production load, enabling the use of application |
| A. Security, JMS messaging, Naming and HTTP Plug-in | | | | server clustering to provide failover capabilities |
| B. The user registry, Naming and HTTP Plug-in | | | | B. Utilize load balancers between the Web servers |
| C. HTTP Load Balancing service, JMS messaging and | | | | and the application servers to provide failover |
| Data Replication Service (DRS) | | | | support at the application server tier |
| D. Security, Naming, Transaction and Dynamic Cache | | | | C. Place the Authentication servers outside of the |
| Answer: D | | | | intrusion firewall with the Web servers, since the |
| 2. Which two components provide workload | | | | Web servers will need to access them |
| management capabilities? | | | | D. Use the largest processor engines and least |
| A. Node agent | | | | number of physical machines for the application |
| B. Web server plug-in | | | | server tier, to minimize the software licensing costs |
| C. Caching proxy | | | | Answer: A |
| D. Deployment manager | | | | 9. Which set of parameters can a system |
| E. Load balancer | | | | administrator adjust to directly improve performance |
| Answer: BE | | | | for the EJB container? |
| 3. An application server is using data source | | | | A. Transaction lifetime and client inactivity timeout |
| connections being managed thru connection pooling. | | | | B. Cache size and cache cleanup interval |
| However, the server is logging database errors | | | | C. Data source connection pool and server JVM size |
| resulting from lack of connections. In this context, | | | | D. Session timeout and HTTP session object size |
| what applies to tuning database connections? | | | | Answer: B |
| A. Data sources are abstracted from the JDBC | | | | 10. A cluster member has suddenly crashed. The |
| drivers to permit database upgrades without | | | | administrator is concerned about aborted transactions |
| impacting the application logic. The administrator | | | | holding locks in the database. What can an |
| should decrease the connection timeout value. | | | | administrator do to release the locks? |
| B. The connection pool is managed by the application | | | | A. Unmount the shared file system such as a |
| server container, so in addition to increasing the | | | | Network Attached Storage (NAS) where the |
| connection setting, additional connections allowed | | | | transaction log is stored |
| must be configured on the database. | | | | B. Restart the deployment manager and node agents |
| C. The data sources are released at the end of the | | | | who manage the transaction log |
| commit phase when using Type 4 JDBC drivers. New | | | | C. Verify another running cluster member has access |
| connections will be created upon the next database | | | | to the transaction log |
| access. | | | | D. Reconnect the database where the transaction log |
| D. It is necessary to tune the applications before | | | | is stored |
| tuning WebSphere application server. Connections not | | | | Answer: C |
| returned to the pool are often caused by programs | | | | 11. Session Initiation Protocol (SIP) servlets are |
| not closing connections properly. | | | | packaged in which type of archive file? |
| Answer: D | | | | A. SAR |
| 4. What is needed to load balance the HTTP traffic | | | | B. WAR |
| across a cluster of Web servers? | | | | C. JAR |
| A. Configure a proxy server such as Tivoli Access | | | | D. EJB-JAR |
| Manager (TAM) | | | | E. SIP-JAR |
| B. Enable server affinity for each HTTP server in the | | | | Answer: A |
| cluster | | | | 12. What does a WebSphere application server |
| C. Implement the caching proxy server component | | | | provide to support the installation and deployment of |
| of the WebSphere Edge | | | | JSR 168 compliant portlets? |
| D. Use an IP sprayer from the load balancing | | | | A. An embedded portlet container |
| component of the WebSphere Edge Components | | | | B. A scaled-down version of the WebSphere Portal |
| Answer: D | | | | Server |
| 5. What functionality does the Caching Proxy server | | | | C. Several J2EE applications that render and |
| provide? | | | | aggregate portlets in a browser |
| A. Reverse proxy and content-based routing | | | | D. |