While installing the equipment for a new two-node cluster， it is discovered that the disk subsystem  Rack has one connection to the power mains. The explanation given was that the disks are to be mirrored between the two disk drawers in the rack and that a failure in either of the disk drawers would simply result in half of the disk being lost. 
What can be done to avoid a single point of failure？（）   

单项选择题During a planning meeting， Company.com indicates that they intend to make a relational  Database highly available. The application has a pre-requisite that a kernel extension be loaded from  etc inittab.  How would this be managed in an HACMP environment？（）

A. It can be started with a crontab entry.
B. It can be created as an Application Server.
C. It can be added to a resource group as a dependency.
D. It cannot be done because HACMP provides no method to order application start/stop scripts.

单项选择题During a planning session， the customer indicates the need to provide high availability between a  Node attached to an IBM TotalStorage Enterprise Storage Server and a remote node attached to a IBM TotalStorage FAStT server with automatic fallover in the event of a disaster.  Which of the following HACMP options will provide this functionality？（）

A. GeoRM
B. HACMP/XD：PPRC
C. HACMP/XD：GPFS
D. HACMP/XD：HAGEO

单项选择题While performing a site survey to document the existing environment before implementing a new HACMP cluster， it was discovered that a port filtering firewall was being used to protect the production system. The plan is to continue using the firewall and add a second firewall to avoid a single point of failure. Each node in the two-node cluster will have all of its network adapters connected to the firewalls， and all connections to the nodes will pass through these firewalls.  What must be considered about HACMP in a firewall environment？（）

A. Firewalls are not supported in a HACMP environment.
B. HACMP uses only TCP/IP so firewalls are not relevant.
C. Specific ports must be open for HACMP communications.
D. Dynamic routing must be used to properly route packets in a firewall-protected environment.

单项选择题An HACMP cluster has three nodes of unequal size. The largest node is Node ’A’. The primary application on Node ’A’ has two components. One component is memory intensive， the other is IO intensive. Nodes ’B’ and ’C’ are running web servers and databases that access information produced by applications on Node ’A’. The customer requires the most performance from the primary application and wants all nodes available for fallover processing.  Which of the following is the best solution for meeting the customer requirements？（）

A. Use nodes of equal size.
B. Create multiple resource groups and use loadlever.
C. Use dynamic node priority to manage resource groups.
D. Use an ordered list to manage resource group fallover.

单项选择题Company.com wishes to use HACMP on two IBM eServer pSeries servers. During the planning  session， it was decided to use the native serial ports s1 or s2 for a non-IP heartbeat network.  What should be done to ensure the serial network will function with HACMP heartbeats？（）

A. Use either s1 or s2 port configured as a TTY interface with a NULL Modem cable.
B. Use the s2 serial port on each system configured as a TTY interface with a NULL modem cable.
C. Use the s1 port on each system configured as a TTY interface with a standard serial modemcable.
D. Verify with IBM support which native serial ports for the server model can be used for HACM  pheartbeats.