题目内容

What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree in PIM-SM operations？（）

A. immediately after receiving the first packet on the shared tree for a given （S，G）
B. after receiving over 1 kb/s traffic onthe shared tree for a given （S，G）
C. 10 seconds after receiving the first packet on the shared tree for a given （S，G）
D. 30 seconds after receiving the first packet on the shared tree for a given （S，G）
E. after receiving over 10 kb/s traffic onthe shared tree for a given （S，G）

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60吨级敞车中部装载货物时，宽度不得小于1.3m，重量不得大于（）吨。

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训练婴儿学站主要是训练（）

A. 宝宝的社会交往能力
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C. 宝宝的认知能力
D. 使身体克服地心引力的肌肉力量与前庭平衡系统的整合能力。

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电子商务的安全隐患有哪些？

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You are the network administrator for Company Inc. Two users named Eric and Julia share a Windows 2000 Professional computer. Eric’s user account is a member of the local Administrators group. Eric needs to share files with Julia. Eric wants Julia to be able to change any of the shared files and to create her own files if necessary. Eric wants to prevent Julia from changing the permissions on files that Eric creates. To accomplish his goal， Eric creates a folder named C：\Data. He changes the NTFS permission on C：\Data to allow his local user account Full Control permissions and to allow Julia’s local user account default permissions. Eric places 10 files in the folder. When Julia logs on to the computer using her local user account and opens a file in C：\Data， she cannot save the changes to the file. Julia also cannot create any new files in the folder. You need to help Eric configure the correct permissions of C：\Data. What should you instruct Eric to do？（）

Add Julia’s user account to the local Power Users group.
B. Add Julia’s user account to the local Administrators group.
C. Allow Julia’s user account Write permissions to C：\Data.
D. Allow Julia’s user account Full Control permission to C：\Data.

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