搜题请搜索小程序“爱下问搜题”
问题 单项选择题

警察产生的阶级条件是( )

A．生产力的发展和私有制的产生

B．阶级矛盾和统治阶级内部矛盾的不可调和性

C．维护统治秩序与惩罚犯罪的客观需要

D．国家机器的形成

答案

参考答案：B

解析：警察产生的阶级条件是阶级矛盾和统治阶级内部矛盾的不可调和性。

单项选择题

___39___ is used to ensure the confidentiality, integrity and authenticity of the two end points in the private network. ___40___, 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 ___41___ to secure data traffic can automatically authenticate devices by using by using ___42___, 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 ___43___ 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.

39（）

A. Certificate

B. Encryption

C. Tunnel

D. Presentation
查看答案
单项选择题

尽管这两年某国每年有500万人口脱盲，但扫除文盲的形势不容乐观，该国的成人非文盲率在亚洲排名非常靠后，且脱盲速度也比周边国家慢。 概括这段话的意思是：（）。

A． 某国每年有500万人口脱盲

B．某国扫盲成绩比不上亚洲国家

C．某国扫盲成绩不理想

D．某国扫盲速度太慢
查看答案