IBM study 000-806 exam

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1. Which statement is true about designing highly available infrastructures based on WebSphere Application Server ND V6.1 clusters?

A. A stand-alone server topology provides the greatest amount of process isolation and therefore is the most effective building block in combination with other stand-alone servers for building a highly resilient cluster based infrastructure.

B. A horizontal scaling topology provides the greatest opportunity to implement efficient use of single machine processing power so that should there be a failover in that environment, there will be sufficient capacity available for the remaining nodes to pick up the workload from the failed node.

C. A vertical scaling topology provides the greatest opportunity to implement efficient use of machine processing power so that should there be failover in that environment, there is sufficient capacity available for the remaining cluster members to pick up the workload from the failed cluster member.

D. A horizontal scaling topology provides the greatest amount of process isolation and therefore is the most effective building block in combination with other stand-alone servers for building a highly resilient cluster based infrastructure.

Answer: C

2. An administrator is configuring a cluster bus destination on a cluster with five members on five different physical machines. The administrator will configure two messaging engines which may be run on any of the five cluster members. What is the simplest configuration for the messaging engines' data stores that still ensures proper fail over?

A. A file-based data store in the config directory that is kept in sync on all cluster members by the deployment manager

B. A single remote database accessible by all cluster members with one schema to be shared by the messaging engines

C. A single remote database accessible by all cluster members with two schemas

D. Two remote databases accessible by all cluster members

Answer: C

3. A WebSphere Application Server ND V6.1 administrator has been asked to set up cache replication for an application. The application team wants to make sure it does not loose any cache data that is generated. What would make losing cache data least likely to happen?

A. Full group replication

B. Enable disk offload

C. Push only

D. Flush to disk

Answer: B