语句LIST MEMORY LIKE a*能够显示的变量不包括( )。A．a B．

搜题请搜索小程序“爱下问搜题”

问题单项选择题

语句LIST MEMORY LIKE a*能够显示的变量不包括( )。

A．a

B．a1

C．ab2

D．ba3

答案

参考答案：D

解析：命令LIST MEMORY用来显示内存变量的当前信息，LIKE短语只显示与通配符相匹配的内存变量。通配符包括*和，*表示任意多个字符，表示任意一个字符。题中给出的命令表示只显示变量名以字母a开头的所有内存变量。

单项选择题

(66) is used to ensure the confidentiality, integrity and authenticity of the two end points in the private network. (67) , an application-layer protocol, authenticates each peer in an IPsec transaction. IKE negotiates security policy, determining which algorithm may be used to set up the tunnel. It also handles the exchange of session keys used for that one transaction.
Networks that use (68) to secure data traffic can automatically authenticate devices by using (69) , which verify the identities of the two users who are sending information back and forth. IPsec can be ideal way to secure data in large networks that require secure connections among many devices.
Users deploying IPsec can (70) their network infrastructure without affecting the applications on individual computer. The protocol suite is available as a software-only upgrade to the network infrastructure. This alows security to be implemented without costly changes to each computer. Most important, IPsec allows interoperability among different network devices, PCs and other computing systems.

A．characteristics

B．associated links

C．digital certificates

D．attributes

查看答案

单项选择题

肾小球滤过率（GFR）降低，首先引起（）

A.高钠血症

B.高钾血症或代谢性酸中毒

C.尿比重偏高

D.尿比重偏低

E.血肌酐升高

查看答案