题目内容

在计算机网络的各个组成部分中,下面四项中()属于网络的通信设备。

A. 交换机
B. 对等机
C. UNIX
D. 服务器

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规模化牛场挤奶厅中,挤奶台的布置形式有哪几种?各自的特点是什么?

应收账款质押登记通过登记()办理。

A. 征信系统
B. 公示系统
C. 管理系统
D. 贷款系统

为什么管嘴出流时,阻力增加了,泄流量反而增大?

You are deploying two core switches, one in each building, 50 km away from each other. The cross-connection between them will be a Layer 2 2-gigabit EtherChannel with an 802.1Q trunk. You configured it correctly but the link does not come up. The port is in the "admin up" state, and the line protocol is in the "down" state. The fiber link is OK. What would be the most likely reason for the link not to come up? ()

A. The switches are not the same model
B. You are not using the correct SFP
C. You are not using correct optical media converters
D. Configuration should be modified, because the distance is longer

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