An index called ORD_CUSTNAME_IX has been created on the CUSTNAME column in the ORDERS table using the following command： SQL>CREATE INDEX ord_custname_ix ON orders（custname）； The ORDERS table is frequently queried using the CUSTNAME column in the WHERE clause. You want to check the impact on the performance of the queries if the index is not available. You do not want the index to be dropped or rebuilt to perform this test. Which is the most efficient method of performing this task？（）
第1题：
以下 ______ 属于ASP.NET创建的网页程序文件。
A．index.asp
B．index.htm
C．index.aspx
第2题：
Examine the structure of the EMPLOYEES table:Column name Data type RemarksEMPLOYEE_ID NUMBER NOT NULL, Primary KeyLAST_NAME VARCNAR2(30)FIRST_NAME VARCNAR2(30)JOB_ID NUMBERSAL NUMBERMGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBERYou 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? （）
A. CREATE INDEX NAME _IDX (first_name, last_name);
B. CREATE INDEX NAME _IDX (first_name, AND last_name)
C. CREATE INDEX NAME_IDX ON (First_name, last_name);
D. CREATE INDEX NAME_IDX ON employees (First_name, AND last_name);
E. CREATE INDEX NAME_IDX ON employees (First_name, last_name);
F. CREATE INDEX NAME_IDX FOR employees (First_name, last_name);
第3题：
A.index.htm
B.index.asp
C.index.html
D.index.exe
第4题：
Examine the following output： SQL> SELECT index_name，status FROM dba_indexes WHERE status=’UNUSABLE’； INDEX_NAME STATUS------------------------------ ----------- EIND UNUSABLE Which two statements about the above index are true（）
第5题：
The football match was （） on account of rain.
第6题：
以下URL写法正确的是：()
A、\index.htm
B、http:\\\index.htm
C、http///index.htm
D、/index.htm
第7题：
变量定义语句Dim Index&与下面的______等价。 ( )
A．Dim Index As Long
B．Dim Index As Integer
C．Dim Index As Single
D．Dim Index As Double
第8题：
A、Index.asp
B、index.jsp
C、index.html
D、index.php
第9题：
以下网页中属于动态网页文件的是（）。
第10题：
属于静态网页的是（）