[单选题]OSI七层模型中，传输层的数据封装名称为（）

正确答案 ：D

段

[多选题]How could the Ezonexam corporation benefit from using VLANs on their network?(Select three answer choices.)

正确答案 ：AE

VLANs allow access to network services based on department, not physical location.

VLANs establish segmented broadcast domains in switched networks.

解析：A,E,F 解析：Explanation:

[单选题]A Ezonexam PC has the IP address 172.16.209.10 /22. What is the subnet of this address?

正确答案 ：C

172.16.208.0

解析：解析：Explanation:

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