单项选择题

Which of the following RAID levels supports fault tolerance by writing parity to only one drive in the array？（）

A. RAID 3
B. RAID 5
C. RAID 6
D. RAID 10

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Which of the following protocols is responsible for the resolution of IP addresses to MAC addresses？（）

A. DHCP
B. ARP
C. DNS
D. RARP

单项选择题

Which of the following types of DNS records enables support for email？（）

A. A
B. MX
C. PTR
D. AAAA

单项选择题

After applying a new driver to a NIC， the server reboots and fails to restart. Which of the following is the BEST way to resolve the problem？（）

A. Boot using recovery console and restore the previous driver.
B. Boot the server， press F8 and access last known good configuration.
C. Restore the server using last backup tape.
D. Boot the server with ASR option.