An online retailer is considering deploying a database application on xSeries and Windows to serve their Web-based transactions. The database will need about 4TB of usable storage. Downtime costs the customer tens of thousands of dollars per minute， so system availability will be of highest priority. The customer needs to acquire the system within a certain budget but will pay for things that provide higher system availability. Which of the following will be the most appropriate solution？（） A dual pathed switched DS4000 Solution with Clustering， Remote replication， Redundant NICs， and Fibre attached backup。 A single path Direct attach DS4000 solution implemented with Clustering and SAN Based Backup combined with IBM Director for PFA management。 A dual pathed Direct Attach fibre solution， along with dual NICs and memory mirroring。 An iSCSI solution with dual NIC’s with the Flashcopy option enabled on the DS300。
土地的经济特性是（）。 供给的稀缺性。 可垄断性。 不可再生性。 土地利用多方向性。
法兰连接时应保持同轴，其螺栓孔中心偏差一般不超过孔径的（），并保证螺栓自由穿入。 2%。 3%。 4%。 5%。
体增热
Which statements are true regarding table compression? （）(Choose all that apply.) It saves disk space and reduces memory usage.。 It saves disk space but has no effect on memory usage.。 It incurs extra CPU overhead during DML as well as direct loading operations.。 It incurs extra CPU overhead during DML but not direct loading operations.。 It requires uncompress operation during I/O.。
下面哪个不是常用的网络管理方式（）
