WLAN的AP工作在11g模式下工作，假设每个AP平均吞吐量为15Mbps，30个用户可以同时享用512Kbps的带宽，如果集线比选用1：4，用户数总共120个，如果某小区AP的数量为15个AP，那么发的最大用户数为（）

A.WA2100 B.WA2220-AG C.WA2220X-AG D.WA1208E-AG E.WA2210-AG

A.2400 B.3600 C.1200 D.1800

A.2400 B.3600 C.1200 D.1800

A.. B.WA2110-AG C.WA2220-AG D.WA2220X-AG E.WA1208E-AGP F.WA2210-AG

A.setting the STATISTICS_LEVEL parameter to TYPICAL B.adding filters to the Automatic Database Diagnostic Monitor (ADDM) C.enabling Automated Maintenance Task using Oracle Enterprise Manager D.setting the OPTIMIZER_USE_PENDING_STATISTICS parameter to TRUE

A.22 B.7 C.6 D.15 E.2

A.partitioning recommendations B.statistics collection recommendations C.index creation recommendations D.materialized view recommendations E.materialized view log recommendations

A.You cannot specify MEMORY_TARGET if you explicitly specify SGA_TARGET or PGA_AGGREGATE_TARGET values that are greater than zero in your parameter file. B.Oracle can reallocate memory between the SGA and PGA automatically as needed. C.To use Automatic Memory Management, you must explicitly set both the MEMORY_TARGET and MEMORY_MAX_TARGET parameters in your parameter file. D.You can set the MEMORY_TARGET parameter to a maximum value of the current SGA size plus the current PGA size.

A.ompression can be enabled at the table, tablespace, or partition level for direct loads only. B.ompression can be enabled only at the table level for both direct loads and conventional DML. C.ompression can be enabled at the table, tablespace, or partition level for conventional DML only. D.ompression can be enabled at the table, tablespace, or partition level for both direct loads and conventional DML.