A customer wants to create backups at a remotely located datacenter. Price and performance are of primary importance， so backup to disks at the remote location is selected instead of tape. The remote location is 1 KM （0.6 Miles） away from the data center. NAS is the solution being considered. Which of the following is the benefit of this solution？（） NAS runs on 2Gb fibre， which will provide better performance.。 NAS uses WAN infrastructure， which can easily span the 1 KM gap.。 NAS requires fibre storage， which allows dual paths for redundancy.。 NAS requires iSCSI routers and offers better growth environment.。
【背景资料】某5层砖混结构宿舍楼，7度抗震设防。墙厚240mm，墙长48m，宽12m，实际地质情况为西部地基土为中偏高压缩性土，而东部较坚硬。因紧邻该建筑的东侧建有同类型的房屋，并具有详细的地质勘察资料，故建设方省去了地质勘察，要求设计院按该地质勘察资料确定地基承载力。在房屋报建时因无地质资料，未获审批，后不得不补做了勘察，但此时基础已施工完成。施工方为了赶工期，新招进一劳务作业队伍进行墙体砌筑，发现砌筑砂浆层饱满度为75%，皮数砖同缝，多处转角和纵横墙丁字相交处的施工临时洞口处留直槎等情况，当房屋建至5层，墙面开始出现少量细微裂纹，随后逐步发展为裂缝，且不断增多。
请根据上述背景资料完成以下选项。
建设方要求设计院按该东侧建有同类型的房屋的地质勘察资料确定地基承载力，该做法是否正确。
Examine the structure of the EMPLOYEES table: Column name Data type Remarks EMPLOYEE_ID NUMBER NOT NULL, Primary Key LAST_NAME VARCNAR2(30) FIRST_NAME VARCNAR2(30) JOB_ID NUMBER SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER You need to create an index called NAME_IDX on the first name and last name fields of the EMPLOYEES table. Which SQL statement would you use to perform this task? （） CREATE INDEX NAME _IDX (first_name, last_name);。 CREATE INDEX NAME _IDX (first_name, AND last_name)。 CREATE INDEX NAME_IDX ON (First_name, last_name);。 CREATE INDEX NAME_IDX ON employees (First_name, AND last_name);。 CREATE INDEX NAME_IDX ON employees (First_name, last_name);。 CREATE INDEX NAME_IDX FOR employees (First_name, last_name)。
An xSeries specialist monitors a customer’s server that has poor performance. The customer is running an x365 with a ServeRAID 6i controller with write-back cache turned on and ten 15K rpm drives in a RAID-5 array. It is a mission-critical server and must have a redundant storage system. Performance tests indicate that the Average Disk sec/Transfer exceeds 20 ms. Which of the following is the lowest-cost method to increase the throughput？（） Disable the ServRAID cache。 Change the RAID level to 10。 Change the cache level to Write Through。 Add five more drives to the array to increase the number of read/write head。
一台他励直流电动机拖动恒转矩负载，当电枢电压降低时，电枢电流和转速将（）。 电枢电流不变，转速减小。 电枢电流减小，转速不变。 电枢电流减小，转速减小。 电枢电流不变，转速不变。
An administrator is planning for a six node cluster but is concerned about the administration needed tomanage user accounts throughout the cluster. What PowerHA feature could the administrator use to reducethe administration overhead？（）
