单项选择题 A customer who has a two node PowerHA cluster， with each node being at a different site and using cross siteLVM， plans to add a third heartbeat to further reduce the chance of data divergence or partitioned cluster. Theheartbeat will make use of spare adapters in the nodes. However， the heartbeats must go via an externalnetwork requiring static routes to be added for cluster functionality.How can this be achieved？（）

单项选择题 Whichofthefollowingoptionsarevalidchoicesforclustercommunicationsecurity？（）

单项选择题 A customer synchronizes the cluster in a virtualized environment. During the process the following warning isdisplayed： "For nodes with a single Network Interface Card per logical network configured， it is recommended to includethe file ’/usr/es/sbin/cluster/netmon.cf’ with a pingable IP address as described in the PowerHA PlanningGuide". What should the customer do next？（）