Your database is in ARCHIVELOG mode. You have two online redo log groups, each of which contains one redo member. When you attempt to start the database, you receive the following errors: Which statement should you use to resolve this issue?（）

A、 ALTER DATABASE DROP LOGFILE GROUP 1;

B、 ALTER DATABASE CLEAR LOGFILE GROUP 1;

C、 ALTER DATABASE CLEAR UNARCHIVED LOGFILE GROUP 1;

D、 ALTER DATABASE DROP LOGFILE MEMBER 'D:/REDO01.LOG';

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  A、 Init

  B、 2Way

  C、 ExStart

  D、 Exchange

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• IP地址块202.113.79.0/27、202.113.79.32/27和202.113.79.64/27经过聚合后可用的地址数为（　　）。

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  C、94

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• Your task is to provision the Junos security platform to permit transit packets from the Private zone to the External zone by using an IPsec VPN and log information at the time of session close.Which configuration meets this requirement?（）

  A、[edit security policies from-zone Private to-zone External] user@host# show policy allowTransit { match { source-address PrivateHosts;destination-address ExtServers; application ExtApps; } then { permit { tunnel { ipsec-vpn VPN; } } log { session-init; } } }

  B、[edit security policies from-zone Private to-zone External] user@host# show policy allowTransit { match { source-address PrivateHosts; destination-address ExtServers; application ExtApps; } then { permit { tunnel { ipsec-vpn VPN; } } count { session-close; } } }

  C、[edit security policies from-zone Private to-zone External] user@host# showpolicy allowTransit { match { source-address PrivateHosts; destination-address ExtServers; application ExtApps; } then { permit { tunnel { ipsec-vpn VPN;} } log { session-close; } } }

  D、[edit security policies from-zone Private to-zone External] user@host# show policy allowTransit { match { source-address PrivateHosts; destination-address ExtServers; application ExtApps; } then { permit { tunnel { ipsec-vpn VPN; log; count session-close; } } } }

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• 可能影响组织项目团队的一个限制因素是（）。

  A、执行组织的组织结构

  B、小组成员之间沟通不畅

  C、人员配备要求不够明确

  D、小组士气

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• 一般意义上来说，数据包括信息，信息是有意义的数据。

  A、对

  B、错

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