In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switchedLAN? A. after broken links are re-established B. in an improperly implemented redundant topology C. when upper-layer protocols require high reliability D. during high traffic periods E. when a dual ring topology is in use Answer: E Explanation/Reference: 题目问在哪一个环境下交换机在lan出现多个相同的单播帧 A.链路断后重启 B.拓扑中有不合适的冗余 C上层协议需要高可靠度 D在高流量的阶段 E在双环拓扑,正确 |