单项选择题

Which of the following technologies can provide geographically based load balancing with high availability between two web servers with static content？（）

A. Multicast
B. Active/passive cluster
C. Active/active cluster
D. DNS round robin

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单项选择题

When load balancing traffic between two web servers， which of the following technologies provides the LOWEST cost solution？（）

A. Active/passive cluster
B. Active/active cluster
C. Log shipping
D. DNS round robin

单项选择题

A server failed Thursday evening before the nightly backup. The backup scheme in place was fullbackups
every Sunday，incremental backups on Monday，Wednesday，and Friday，and differentialbackups on Tuesday，Thursday，and Saturday.
To fully restore the server，which of the following is theLEAST amount of backup sets required？（）

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

单项选择题

A server has five hot pluggable SCSI disk drives in a RAID 5 array. The server OS crashed and the server will not boot. The administrator noticed that all of the disk drives have gone offline.
Which of the following components would MOST likely have caused the problem？（）

A. Memory
B. SCSI backplane
C. SCSI drives
D. Motherboard