单项选择题 Company.com wishes to use IPAT via IP replacement in a two-node mutual cluster. Each node  has two Ethernet 10/100/1000 adapters. Throughout the planning session，the customer has asked questions about subnet and VLAN requirements for the intended network topology.  Which of the following best describes the network requirements？（）

单项选择题 An enterprise has three nodes： -Node ’A’ is a production database， -Node ’B’ is a production  Application server， and -Node ’C’ is a test and development node. Node ’C’ is used by six programmers to develop and the production application as business critical and would like to make it highly available with HACMP. Application development and testing is not business critical.  Which of the following describes the best solution？（）

单项选择题 During a planning session， Company.com expresses concern about the behavior of the nodes  When HACMP is installed. Once department is reliant on an older piece of equipment that is critical to operations and must communicate to the database server. Previous network changes indicated that this piece of equipment does not support gratuitous ARP.  How can HACMP best incorporate this restriction into the cluster design？（）