单项选择题

When performing a backup， which of the following media types would have no moving parts？（）

A. Tape
B. Flash
C. WORM
D. Optical

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单项选择题

An administrator has a rack server that is 5.25 inches （13.3 cm） tall， which of the following is the correct U size for this server？（）

A. One
B. Three
C. Four
D. Five

单项选择题

Which of the following BEST describes the difference between RAID 5 and RAID 6?（）

A. RAID 5 uses a dedicated parity drive and RAID 6 does not.
B. RAID 6 uses a dedicated parity drive and RAID 5 does not.
C. RAID 6 uses more parity drives than RAID 5.
D. RAID 5 uses more parity drives than RAID 6.

单项选择题

Which of the following BEST describes RAID 5?（）

A. Fault tolerance and failure recovery
B. Fault tolerance and zero configuration
C. Zero configuration and high performance
D. High performance and fault tolerance