You want to back up your 100-GB database on a remote tape device. You are required to ensure that minimum network bandwidth is consumed while transferring the backups to the tape device.
The current consumption of your CPU is approximately 40 percent.
Which type of backup should you perform?
A. standard backup set
B. image copy
C. compressed backup
D. user-managed backup
标准备份集并不能。
镜像拷贝只能在磁带上使用
用户管理的备份不能直接备份到磁带上
答案：C
使用压缩备份，可以节省空间，减小带宽消耗。