2012年思科认证（CCNA）考试练习题精选19
91. In a distance vector routing protocol, aging is set for (在距离向量路由选择协议中，时 效为什么设置.？
A. Only the next available router
B. All routing information
C. Only the unavailable routers
D. Only the routers in the lowest metric route
92. In a distance vector algorithm, the holddown interval for large or complex networks (在距离向量算法中
，大型或复杂网络的暂停间隔.：
A. Cannot be used
B. Would need to have a much larger value
C. Is equal to negative reachability parameter
D. Would need to have a smaller value to reach converg e n c e
93. What do link-state protocols use
as a metric (链路状态协议使用什么作为度.？
A. Hops
B. Cost
C. CPU usage
D. Network operational time
94. Flooding in link-state protocol means what (链路状态协议中的泛洪法意味着什么.？
A. A router sending all routing information to its neighbors
B. A router broadcasting all information to all routers in the network
C. The neighbors of a link-state router receiving a link-state packet, copying it, and then
forwarding it to the rest of the network
D. A router sending information about the routers that have changed
95. Which statement is true of Interior Gateway Protocols (对内部网关协议的陈述中，哪一 句是正确的.？
A. They apply to Internet domains
B. They apply to autonomous systems within the network
C. They apply to external networks
D. They allow systems in the Internet to manage areas in the network where IGP is i m p l e m e n t e d