2012年思科认证（CCNA）考试练习题精选15
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71. Low overhead of a routing algorithm is normally associated with (路由选择算法的低代价通常和什么相关.？
A. Optimal route
B. CPU usage
C. Accuracy
D. Converg e n c e
72. Convergence is not an issue if (收敛并不会成为一个问题，如果.：
A. Routers are added to the network
B. Some of the network interfaces are down
C. CPU/bandwidth usage of the routers changes
D. An invariant network topology is selected for the network architecture
73. An Internet Protocol (IP. router selects (网际协议( I P .路由器选择.：
A. An entire path from source to destination
B. The next route step
C. The two adjacent routers to itself
D. All of the above.
74. IP ROUTE configuration command for a static route includes which of the following parameters (静态路由的IP ROUTE配置命令包括下列哪一个参数.？
A. Subnetwork number of the destination network
B. Subnet mask of the source network
C. IP address of the interface of the router which the packet should use
D. MAC address of the next router on the path
75. Given the following portion of the network:
Network A→ Router X→ Router Y→ Network B
I n t e r f a c e : I n t e r f a c e : 8 6 . 0 . 0 . 0
X 0 Y0
3 5 . 3 . 3 . 4
and assuming a network mask of 255.0.0.0 for both A and B networks, Which one of the
following represents a correct command to configure Router X to send data from Network A to Network B (给定网络的下列端口：
网络A→路由器X→路由器Y→网络B
接口： 接口： 8 6 . 0 . 0 . 0
X 0 Y 0
3 5 . 3 . 3 . 4