2012年思科认证（CCNA）考试练习题精选21
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101. What is a static route (什么是静态路由.？
A. A static route is one that has been manually entered into the routing table and is not updated by a routing protocol
B. A static route is one that is recomputed whenever a change is made on the internetwork
C. A static route is one that is redistributed when it has been learned by another routing protocol
D. A static route is one that comes already configured in the router from the manufacturer
102.并假设A和B网络的网络掩码为2 5 5 . 0 . 0 . 0，则下面的哪一个代表了配置路由器X从网络A向网络B发送数据的正确命令.？
A. #IP ROUTE 85.0.0.0 255.0.0.0 35.3.3.3
B. #ip route 86.0.0.0 255.0.0.0 35.3.3.4
C. #ip route 86.0.0.0 255.0.0.0 35.3.3.3
D. #ip route 85.0.0.0 255.0.0.0 35.3.3.4
103. A static routing table can be changed at any time without manual intervention (静态路由选择表可以不经人工干预而在任何时候修改.。
A. True
B. False
104. In a hybrid solution of static and dynamic routing, the nonroutable packets are sent to (在静态和动态路由的混合解决方案中，不可路由的数据包发送到.：
A. The next router
B. The central router
C. The gateway of last resort
D. The source router where the packets originated
105. How is fault tolerance on a routing algorithm achieved (路由选择算法如何实现容错.？
A. By providing a central control router
B. By a distributed routing protocol
C. By load balancing of the traffic
D. All of the above