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

Whenloadbalancingtrafficbetweentwowebservers，whichofthefollowingtechnologiesprovides theLOWESTcostsolution？（）

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

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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

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