[多选题]Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true? (Select two answer choices)

正确答案 ：AB

The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.

The DHCP Discover message uses UDP as the transport layer protocol.

解析：A,B 解析：Explanation:

[单选题]The Ezonexam network administrator has issued the "VTP password ezonexam" command on a Cisco device. What is the purpose of this command?

正确答案 ：D

It is used to validate the sources of VTP advertisements sent between switches

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