A customer has requested a proposal for a p5-520 with AIX 5.2 and Sysback. There are no plans to run LPARs or Micro-Partitions on the p5-520 in the near future. The customer has asked the pSeries technical specialist to recommend anything else that may be needed. Which of the following should be recommended in this situation？（） HMC。 DVD-ROM。 Tape drive。 Network switch。
判断远古城市产生的标志、城市产生的原因。
Due to a recent change in government regulations， Company.com needs to create two independent but synchronized copies of their data. These copies must be contained in separate storage device a minimum of 100 km apart. The customer has capacity in two systems that meet the criteria， one with SSA disk and the other is FAStT. What facility can be used to manage this issue？（） Two independent copies of the data can be created and synchronized using the "HACMP/XD：HAGeo"。 The existing disks can be incorporated a single storage unit using the optional product "HACMP/XD：PPRC"。 AIX can create a mirrored logical volume across the two systems that would be accessible from either system。 AIX can use the multi path IO subsystem to spread the information across the devices and keep the copies separated。
A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion, they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself. What design issue has the team discovered?（） Tight coupling。 Low cohesion。 High cohesion。 Loose coupling。 Weak encapsulation。 Strong encapsulatio。
城市生态评价的内容主要包括城市生态系统的（）、（）和（）三个方面。
There is the possibility that hdisk1 in the root volume group is going bad. A decision has been made to replace the disk. After saving all of the data from the disk and unmounting any filesystems on the disk, which of the following commands should be run before removing the disk from the system?（）
