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Users report an intermittent degradation of sound on their IP phones. Which of the following woulda network administrator do to alleviate the problem?（）

A、Use plenum cables

B、Provide fault tolerance for the switch

C、Configure VLAN trunking on the switch

D、Configure QoS

时间：2022-05-09 04:29 关键词： CMS专题 CompTIA认证考试 N10-004

答案解析

D