一般路由器的控制台接口默认的速率参数是（）波特。
A、512
B、9600
C、11520
D、1024
To compete in today's fast-paced competitive environment, organizations are increasingly allowing contractors, partners, visitors and guests to access their internal enterprise networks.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(6) .Third parties can introduce risk in a variety of ways from connecting with an infected laptop to unauthorized access of network resources to(7)activity. For many organizations, however,the operational complexity and costs to ensure safe third party network access have been prohibitive. Fifty-two percent of surveyed CISOs state that they currently use a moat and castle's 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 (8) of service attacks or steal (9) information by snooping the network. As they access the corporate network, mobile and remote users inadvertently can infect the network with (10) and worms acquired from unprotected public networks. Hackers masquer-ading as internal users can take advantage of weak internal security to gain access to confidential information.空白处（9）应选择（）
A、reserved
B、confidential
C、complete
D、mysterious
DNS解析器
户外电缆接入户内系统时，在转接处一般要加上（）
A、电气保护设备
B、电气设备
C、转换头
D、网络互连设备
（）命令用于查看网卡的MAC地址。
