A customer is planning to purchase an IBM N series Gateway due to a requirement for file levelstorage. All available storage is managed by a SAN Volume Controller （SVC）. Where should the Nseries Gateway be placed in the network？（）
A、in the place of the SVC
B、between the SVC and the hosts
C、between the SVC and the back-end disk storage
D、alongside the SVC,then the hosts should be mapped to both
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When the length of the run queues， process or thread dispatches interrupts， and lock contention metrics and statistics are analyzed for performance， which of the following resources is being analyzed？（）
A、 CPU
B、 Memory
C、 Disk I/O
D、 Network I/O
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To examine the Exhibit， press the Exhibit button. While a user is compiling a C program， "vmstat 120 10" is run to determine the cause of a performance problem. Given the vmstat output as shown in the exhibit， which of the following conclusions should be drawn about the I/O bottleneck？（）
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A、rmdev -dl ent0
B、ifconfig en0 down
C、ifconfig en0 delete
D、ifconfig ent0 detach
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A、An application process acquires at least a share lock on the current row of every cursor.
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C、Any row changed by another application process can be read, even if the change has not been committed by that application process.
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