A network for a two-node cluster has been planned. The network administrator has explained that the networkdoes not support gratuitous ARP. Which of the following steps will ensure that clients are able to connect tothe cluster after a failover takes place？（） ["Implement heartbeating over IP aliases","Implement persistent service IP addresses","Implement IPAT aliasing with hardware address takeover （HWAT）","Implement IPAT replacement with hardware address takeover （HWAT）"]
社会保险基金通过再投资实现收支平衡。
挪威人喜欢吃沙丁鱼，尤其是活鱼。市场上活沙丁鱼的价格要比死鱼高许多。所以渔民总是千方百计地想法让沙丁鱼活着回到渔港。可是虽然经过种种努力，绝大部分沙丁鱼还是在中途因窒息而死亡。但却有一条渔船总能让大部分沙丁鱼活着回到渔港。船长严格保守着秘密。直到船长去世，谜底才揭开。原来是船长在装满沙丁鱼的鱼槽里放进了一条以鱼为主要食物的鲶鱼。鲶鱼进入鱼槽后，由于环境陌生，便四处游动。沙丁鱼见了鲶鱼十分紧张，左冲右突，四处躲避，加速游动。这样一来，一条条沙丁鱼欢蹦乱跳地回到了渔港。原来鲶鱼进入鱼槽，使沙丁鱼感到威胁而紧张起来，加速游动，于是沙丁鱼便活着到了港口。
这个案例给我们的启示下面的说法不正确的是（）。 ["对于“沙丁鱼”来说，在于缺乏忧患意识。如果他们不想窒息而亡，就应该也必须活跃起来，自加压力，积极寻找新的出路。","如果一个人长期处于顺境，就缺乏动力与新鲜感，容易产生惰性","当压力存在时，为了更好地生存与发展下去，惧者必须必然会比其他人更努力","为了保持身心健康，应该时时刻刻让自己处于紧张与压力之中"]
对重要用户的停电应提前（）天通知。
Immediately after adding a new disk to or removing an existing disk from an Automatic StorageManagement （ASM） instance， you find that the performance of the database decreases initially， until the addition or removal process is completed. Performance then gradually returns to normal levels. Which two activities could you perform to maintain a consistent performance of the database while adding or removing disks？（） ["increase the number of checkpoint processes","define the POWER option while adding or removing the disks","increase the number of DBWR processes by setting up a higher value for DB_WRITER_PROCESSES","increase the number of slave database writer processes by setting up a higher value for DBWR_IO_SLAVES","increase the number of ASM Rebalance processes by setting up a higher value for ASM_POWER_LIMIT during the disk addition or removal proce"]
加速养护
