CCNA考试题库中英文翻译版及答案17_all ospf routers in an area must have the same pro-优快云博客

41. What is the maximum data rate specified for IEEE 802.11b WLANs?

　　41.在IEEE 802.11b无线局域网规范中，指定的最高数据速率是?

　　A. 10 Mbps B. 11 Mbps

　　C. 54 Mbps D. 100 Mbps

　　Answer: B

　　42. Which of the following describe the process identifier that is used to run OSPF on a router?

　　(Choose two.)

　　42. 下列哪一项正确描述了运行的OSPF的路由器的进程标识符的作用? (Choose two.)

　　A. It is locally significant.

　　A. 是一个本地的标识

　　B. It is globally significant.

　　B. 是一个全局的标识.

　　C. It is needed to identify a unique instance of an OSPF database.

　　C. 为了标识OSPF数据库中的唯一的实例

　　D. It is an optional parameter required only if multiple OSPF processes are running on the router.

　　D. 是一个可选的参数，只有多个OSPF进程在同一个路由器上运行时才需要

　　E. All routers in the same OSPF area must have the same process ID if they are to exchange routing information.

　　E. 所有在同一个OSPF区域的路由器必须用同一个进程号，否则它们无法交换路由信息。

　　Answer: AC

43.Refer to the exhibit. The FMJ manufacturing company is concerned about unauthorized access to the Payroll Server. The Accounting1, CEO, Mgr1, and Mgr2 workstations should be the only computers with access to the Payroll Server. What two technologies should be implemented to help prevent unauthorized access to the server?

　　(Choose two.)

　　43.由图所示 FMJ 公司注意到有未授权的访问服务器的现象，但是只有 Accounting1, CEO, Mgr1, Mgr2，是允许访问 Payroll Server的，以下哪两种技术可以避免对服务器的未授权的访问?