單項選擇題

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

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單項選擇題

A system administrator needs to maintain 1.2TB of storage for a database server. There are six 250GB drives available in the server for storage space. Which of the following RAID configurations would be the BEST choice given that performance and fault tolerance are important factors?（）

A. RAID 1 across drive pairs totaling 3 pairs
B. RAID 5 across all 6 drives
C. RAID 10 across all 6 drives
D. RAID 0 across all 6 drives

單項選擇題

An application server is running slowly. After viewing performance monitoring data it is detected that the disk queue length is high.
Which of the following could BEST resolve the situation？（）

A. Add more disk drives.
B. Increase the amount of virtual memory.
C. Add a faster processor.
D. Add more memory to stop paging to disk.