单项选择题

At which of the following times should the administrator refer to the HCL?（）

A. Prior to purchasing hardware
B. Before installation
C. When installing drivers
D. After installation

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单项选择题

Which of the following RAID levels would be the BEST choice if performance was the only determining factor?（）

A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10

单项选择题

Multiple expansion cards are installed in a rack mount 1U server. All expansion cards stop working simultaneously.
Which of the following is the MOST likely cause of the problem？（）

A. Motherboard
B. Operating system
C. Expansion cards
D. Riser cards

单项选择题

Which of the following offers the MOST redundancy for a system but is also very costly?（）

A. RAID implementation
B. Disk-to-disk replication
C. Server-to-server clustering
D. Hot site replication