A customer wants to install an IBM BladeCenter infrastructure but is concerned about the cost of the full fabric internal fibre switches. Consequently， the customer is considering an N_Port ID Virtualization （NPIV） capable switch. Which of the following should be mentioned to the customer regarding the NPIV switch？（）

A、Youcan not use an NPIV switch in the same IBM BladeCenter chassis as a Cisco Intelligent Ethernet Switch

B、Using blade servers with the NPIV switch will require morefibre ports on the external fibre switch

C、Storage devices likeFibre Channel Tape and Disk cannot be attached to the NPIV Switch but must connect to a core fabric switch.

D、The NPIV switch will count against the number of domains in a fabric

In JUNOS software， which would prevent an OSPF router from importing the 10.0.0.4/30 summary route？（）

A、Import policies are not allowed， so this is not possible.

B、Export policies are not allowed， so this not possible.

C、Apply a firewall filter matching 10.0.0./4/30 and reject the route.

D、Apply an import policy matching 10.0.0.4/30 and reject the route.

Which options would you consider while configuring a flash recovery area fast recovery area in 11g Release 2 for your production database that is running in ARCHIVELOG mode？（） 

 Setting the FAST_START_MTTR_TARGET to set the mean time to recover

 Setting the RECOVERY_PARALLELISM parameter to twice the number of CPUs

 Using the DB_RECOVERY_FILE_DEST parameter to set the location for flash recovery area

 Using the DB_RECOVERY_FILE_DEST_SIZE parameter to define the disk space limit for the recovery files created in the flash recovery area

驻波比越大越好。

A、对

B、错

为“学生”表的“年龄”字段增加有效性规则“年龄必须在18-45岁之间”的SQL语句是（　　）。

A、ALTER TABLE学生ALTER年龄SET CHECK年龄<=45 AND年龄>=18

B、ALTER TABLE学生ALTER年龄ADD年龄<=45 AND年龄>=18

C、ALTER TABLE学生ALTER年龄WHERE年龄<=45 AND年龄>=18

D、ALTER TABLE学生ALTER年龄MODI年龄<=45 AND年龄>=18

机房空调中压力最低的地方在（）。

A、冷凝器的入口

B、冷凝器的出口

C、压缩机的排气口

D、压缩机的吸气口