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2017年11月网络工程师考试上午真题【基础知识】

【68】下面消除交换机上MAC地址漂移告警的方法中,描述正确的是(68)
①人工把发生漂移的接口shutdown
②在接口上配置error-down,自动down掉漂移的端口
③在接口上配置quit-vlan,使发生漂移的接口指定VLAN域内退出
④在接口上配置stp tc-protection解决MAC地址漂移

真题详情及解析

【69】两台交换机的光口对接,其中一台设备的光UP,另一台设备的光口DOWN,定位此类故障的思路包括(69)
①光纤是否交叉对接
②两端使用的光模块波长和速率是否一样
③两端COMBO口是否都设置为光口
④两个光口是否未同时配置自协商或者强制协商

真题详情及解析

【70】某STP网络从链路故障中恢复时,端口收敛时间超过30秒,处理该故障的思路不包括(70)

真题详情及解析

【71-75】Routing in circuit-switching networks has traditionally involved a static routing strategy with the use of(71)paths to respond to increased load. Modern routing strategies provide more adaptive and flexible approaches . The routing function of a packet-switching network attempts to find the least-cost route through the network,with cost based on the number of (72),expected delay,or other metrics. In virtually all packet-switching networks,some sort f adaptive routing technique is used.Adaptive routing algorithms typically rely on the(73)information about traffic conditions among nodes.In most cases,adaptive strategies depend on status information that is(74)at one place but used at another.There is a tradeoff here tween the quality of the information and the amount of(75). The exchanged information itself a load on the constituent networks,causing a performance degradation.

真题详情及解析
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