A customer has six Windows 2003 servers， three RedHat Linux servers， and three Netware servers. The current environment is direct attached storage. The customer needs a 2Gb Fibre solution that can scale up to 64 partitions over the next three years and provide connectivity to all three platforms. The customer also needs a fibre attached backup solution. Which of the following solutions has the best combination of price and performance？（） ["A DS4300 Turbo with Fibre Attached Tape Library","A DS4500 with EXP700’s and Fibre Attached Tape Library","A DS4500 with EXP710’s and Fibre Attached Tape Library","A DS4300 with Additional EXP710’s and a SCSI Attached Tape Library"]
所有者权益
The EMP table contains these columns: LAST NAME VARCHAR2(25) SALARY NUMBER(6,2) DEPARTMENT_ID NUMBER(6) You need to display the employees who have not been assigned to any department. You write the SELECT statement: SELECT LAST_NAME, SALARY, DEPARTMENT_ID FROM EMP WHERE DEPARMENT_ID = NULL; What is true about this SQL statement? （） [" The SQL statement displays the desired results."," The column in the WHERE clause should be changed to display the desired results."," The operator in the WHERE clause should be changed to display the desired results."," The WHERE clause should be changed to use an outer join to display the desired results."]
You issued the following statement in your SQL*Plus session： SQL>ALTER SESSION ENABLE RESUMABLE TIMEOUT 600； Which operation is neither suspended nor resumed using the Automatic Resumable Allocation feature in your database？（） [" creating a table in your schema and you exceed your allocated space quota on the tablespace"," executing a long query that involves a sort operation and the statement runs out of temporary space"," loading data into tables by using the SQL*Loader and the number of extents in the table reaches the maximum limit"," creating a table in a dictionary-managed tablespace with an explicit MAXEXTENTS setting which results in an out of space error"]
A customer has received a quotation from Dell for Intel-based 1U servers. What is the first step in submitting your quotation？ （） ["Try to sell IBM X-Architecture technology to the customer and explain its benefits.","Take the customer to the Dell Web site for determining a similar server configuration.","Submit a special bid to receive additional discount on 1U servers.","Design a comparable solution while highlighting IBM advantages."]
某施工单位承担一土石坝施工任务，该单位对坝基开挖做了施工组织设计，坝基基坑深为5.2m，采用药壶爆破法施工，土方量为9000m3，平均运距为10km，合同工期为8天。该施工单位有甲、乙、丙液压挖掘机各4台、2台、2台，A、B、C自卸汽车各12台、30台、18台，挖掘机的机械利用率为0.9，自卸汽车的机械利用率为0.95，其主要参数见表1、表2。
若挖掘机和自卸汽车只能取一种，而数量没有限制，如何组合最经济？说明理由。并计算其单方挖运直接费。
