In your production database, you observe that users’ transactions are consuming a lot of resources and you plan to impose resource restrictions by using Resource Manager. For which three resources can you enable usage restrictions by using Resource Manager?()
A. CPU usage
B. degree of parallelism
C. number of open cursors
D. number of sorts performed
E. idle time for blocking sessions
F. number of disk I/O operations performed
G. number of memory I/O operations performed
查看答案
一次一密技术对加密算法没有要求,直接采取二进制异或加密就可以了。现有密文7、密钥4,请问明文是以下哪一个?()
A. 3
B. 4
C. 7
D. 11
钼元素符号表示正确的是()。
A. Mo
B. Na
C. Mn
D. Mg
在衡量国际储备是否适度的指标中,目前世界各国最常用的是()
A. 国际储备量与国民生产总值之比
B. 国际储备量与外债总额之比
C. 国际储备量与全年出口额之比
D. 国际储备量与全年进口额之比