单项选择题

Which of the following RAID levels provide the best performance for a system where there are mostly writes occurring？（）

A. RAID 0
B. RAID 1
C. RAID 3
D. RAID 5

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单项选择题

If percentage of RAM occupied by file pages falls below minperm， page replacement algorithm steals pages from （）

A. file pages only.
B. computational pages only.
C. either file or computational pages.
D. working segment only.

单项选择题

Which of the following performance tools will work with optimized code and also provides source statement profiling？（）

A. prof
B. gprof
C. kprof
D. tprof

单项选择题

Which of the following options would best help to reduce packet fragmentation for a TCP application transferring large amounts of data between servers across a path of multiple networks？（）

A. Adjust Path MTU attributes， using the no command.
B. Adjust the status queue size on the adapters， using the chdev command.
C. Adjust ipforwarding to enabled， using the no command.
D. Adjust tcp_maxburst to enabled， using the no command.