Which three connection options are available when configuring a switch port to be part of a privateVLAN? （）(Choose three.) [" isolated mode"," switchport mode"," modular mode"," community mode"," promiscuous mode"," global mode"]
下面（）的主页地址是有效的。 ["www：\/\/www.sina.com.cn","http：\/\/\/www.sina.com.cn","http：\\\\www.163.net\\infor.htm","ftp：\/\/www.163.net"]
职业病防治工作坚持（）的方针，实行分类管理、综合治理。 ["安全第一、预防为主","预防为主、防消结合","预防为主、防治结合"]
综合重合闸装置的阻抗选项元件一般均采用（）接线方式，当单相接地故障时，测量阻抗是（）。
Your company has a main office and one branch office. The network consists of an Active Directory domain named contoso.com. All servers run Windows Server 2003 Service Pack 2 (SP2). In the main office, a server named DNS1 hosts the primary DNS zone for contoso.com. In the branch office, you configure a secondary DNS zone for contoso.com on a server named DNS2. You discover that the resource records are not being transferred to DNS2.You verify that the contoso.com zone on DNS2 is configured to have the correct IP address for DNS1. You need to ensure that the resource records for contoso.com are transferred to DNS2. What should you do?（） ["On DNS2, configure a stub zone for contoso.com. ","On DNS2, configure a conditional forwarder for contoso.com. ","On DNS1, configure a delegation record for DNS2.contoso.com. ","On DNS1, add the IP address for DNS2 to the contoso.com Name Servers list."]
发现有人在低压架空线杆塔上触电时，应如何办？
