To compete in today’s fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise network. These users may connect to the network through wired ports in conference rooms or offices, or via wireless access points. In allowing this open access for third parties, LANs become (1). Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to (2) activity. For many organizations, however, the operational complexity and costs to ensure safe third party network access has been prohibitive. Fifty-two percent of surveyed CISOs stated that they currently use a moat and castle" security approach, and admit that defenses inside the perimeter are weak. Threats from internal users are also increasingly a cause for security concerns. Employees with malicious intent can launch (3) of service attacks or steal (4) information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with (5) and worms acquired from unprotected public networks. Hackers masquerading as internal users can take advantage of weak internal security to gain access to confidential information.

4（）

A．reserve

B．confidential

C．complete

D．mystery

2011年是辛亥革命100周年。某市教育、宣传、团委等 部门开展了以“纪念辛亥革命100周年”为主题的读书活动。开展这项活动的意义在于[ ]

①人们的思想在文化陶冶中升华　

②丰富人的精神世界和促进文化传播与发展　

③抓住了文化建设的根本

④弘扬中 * * 精神

A．①②③

B．①②④

C．②③④

D．①③④