[多选]
Given the exhibit below. You are a network manager of your company. You are reading your Syslog serverreports. On the basis of the Syslog message shown， which two descriptions are correct？（）

A . This is a normal system-generated information message and does not require further investigation.
B . Service timestamps have been globally enabled.
C . This message is unimportant and can be ignored.
D . This message is a level 5 notification message.

实现VLAN的三大好处？（）可以实现更有效地利用带宽，允许许多物理组使用相同的网络基础设施。广播风暴可以通过减少广播域的数量，从而增加它们的尺寸来缓解。水平较高可以通过从其他网络业务分离敏感的数据流量达到。基于端口的VLAN造成交换机端口的采用效率，这要归功于802.1Q中继可以实现。来更有效地利用带宽，允许许多逻辑网络使用相同的网络基础设施。广播风暴可以通过增加广播域的数量，从而降低它们的尺寸来缓解。 VLAN使它更容易为IT人员配置新的逻辑组，因为所有的VLAN属于同一个广播域。合同管理与三大目标管理等相比，是（）。 A.平行地位。 B.核心地位。 C.次要地位。 D.先行地位。《铁路旅客运输管理规则》直达特快旅客列车车次范围为（）次。 Z2-Z9998。 Z1-Z9999。 Z1-Z9998。 Z2-Z9999。合同管理对工程项目建设来说，是从（）开始。设计阶段。全过程。施工阶段。招标阶段。水分冷凝带又称为（）。干燥带。过湿带。预热带。

Given the exhibit below. You are a network manager of your company. You are reading your Syslog serverreports. On the basis of the Syslog message shown， which two descriptions are correct？（）

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[多选] Given the exhibit below. You are a network manager of your company. You are reading your Syslog serverreports. On the basis of the Syslog message shown， which two descriptions are correct？（）

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[多选]
Given the exhibit below. You are a network manager of your company. You are reading your Syslog serverreports. On the basis of the Syslog message shown， which two descriptions are correct？（）