Application A holds an Update lock on a single row and application B is trying to read that row. If both applications are using isolation level UR, which of the following will occur?（） Application B will read the row.。 Applications A and B will cause a deadlock situation.。 Application B will wait until application A releases the Update lock.。 Application A will be terminated so that application B can read the row.。
A customer has an existing IBM System Storage DS8700 2-way model with 8 mega packs of 300 GB disks and 16 fibre ports. How many additional fibre ports and mega packs can be installed in the base frame（） 16fibre ports and 0 mega packs。 4fibre ports and 8 mega packs。 8fibre ports and 4 mega packs。 12fibre ports and 0 mega pack。
可燃气体检测仪的蜂鸣（）越高表明气体泄漏浓度越高。 幅度。 频率。 声音。 高度。
目前新建多层民用建筑一般选择（）作为排水管。 A.不锈钢管 。 B.镀锌管 。 C.PVC管 。 D.铸铁管。
下面哪个产品仅支持SAS主机连接？（） DS4700。 DS5100。 DS3200。 DS3400。
To perform SNMP Monitoring of cluster， what daemon must be running？（）
