2012年思科认证（CCNA）考试练习题精选20
96. What is the maximum allowable number of hops in Enhanced Interior Routing GatewayProtocol? (在增强内部路由网关协议中，最多允许多少个跳计数.？
A. 64
B. 224
C. 128
D. 232
E. 256
97. Enhanced Interior Routing Gateway Protocol uses which of the following (增强内部路由选择网关协议使用下列的哪一种.？
A. Link-state vector
B. Diffusion Update Algorithm
C. Distance vector
D. A and B only
E. B and C only
98. What are three objectives for a routing protocol (路由选择协议的3个目标是什么.？
A. Accuracy
B. Quick holddowns
C. Rapid Convergence
D. Low overhead
99. Define convergence (定义收敛.。
A. Convergence is the updates that are triggered by network changes
B. Convergence is the process of sending 呼叫packets
C. Convergence is two routers merging their routing tables into one
D. Convergence is the synchronizing of all routing tables on the internetwork, or simply the synchronization of a single route change across all routers.
100. Why are dynamic routing protocols considered dynamic (为什么动态路由选择协议考虑动态.？
A. Because each route is dynamically selected for each packet with a destination network not attached to the router。
B. Because new routes are dynamically recomputed whenever there is a change in the nternetwork topology
C. Because convergence happens faster
D. Because all the routes remain the same no matter what changes happen on the network