题目内容
● 信息系统的概念结构如下图所示，正确的名称顺序是 （24） 。
（24）
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● 页式存储系统的逻辑地址是由页号和页内地址两部分组成，地址变换过程如下图所示。假定页面的大小为 8K，图中所示的十进制逻辑地址 9612 经过地址变换后，形成的物理地址 a 应为十进制 （23） 。
（23）
● 计算机各功能部件之间的合作关系如下图所示。假设图中虚线表示控制流，实线表示数据流，那么a、b和c分别表示 （5） 。
（5）
● To compete in today’s fast-paced competitive environment, organizations arincreasinglyallowing contractors, partners, visitors andgueststoaccesstheirinternalenterprisnetworks.Theseusersmayconnect to the network through wired ports in conference rooms ooffices, or via wireless accesspoints.Inallowing this open access for third parties, LANs becom（71）.Third parties can introduce risk in a variety of ways from connecting with an infectelaptop to unauthorized access of network resources to （72）activity. For many organizationhowever, the operational complexity and costs to ensure safe third party network access havbeen prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat ancastle’s security approach, and admit that defenses inside the perimeter are weak. Threats fromnternal users are also increasingly a cause for security concerns. Employees with maliciouintent can launch （73）of service attacks or steal （74）information by snooping thnetwork. As they access the corporate network, mobile and remote users inadvertently can infethe network with （75）and worms acquired from unprotected public networks. Hackemasquerading as internal users can take advantage of weak internal security to gain access tconfidential information.
解释贫穷问题的理论有三种：______、______、______。
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