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【单选题】

You are assigning VLANs to the ports of switch R1. What VLAN number value is an assigned tothe default VLAN？（）

A、VLAN 1003

B、VLAN 1

C、VLAN ON

D、VLAN A

E、VLAN 0

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第1题
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第2题
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第3题
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第4题
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第5题
[单选题] You are employed as the enterprise exchange administrator at Company.com..com makes use of Microsoft exchange server 2010 messaging solution.you are responsible for managing the exchange network for Company.com.you are experiencing various problems in the exchange environment.you decide to determine whether one of the other administrators executed any configuration changes in the organization.What should you do？（）

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第6题
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第7题
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第8题
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第9题
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第10题
[单选题] You are maintaining your database in Oracle10g. You are required to view the list of files that have not been backed up for the last seven days. Which RMAN command will you use？（）

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