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【多选题】

After properly configuring multiple VLANs， an administrator has decided to secure its VLAN network. Which three steps are required to secure this environment？ （Choose three.）（）

A、 If a port is connected to a foreign device make sure to disable CDP， DTP， RPR， PAgP， UDLP， and any other unnecessary protocols， and enable UplinkFast/BPDU guard on it.

B、 Enable root guard feature to prevent a directly or indirectly connected STP-capable device from affecting the location of the root bridge.

C、 Configure VTP domains appropriately or turn off VTP altogether to limit or prevent possible undesirable protocol interaction with regards to the network-wide VLAN configuration.

D、 Set the native VLAN ID to match the port VLAN ID of any 802.1q trunk to prevent spoofing.

E、 Disable all unused ports and place them in an unused VLAN to avoid unauthorized access.

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更多“After properly configuring multiple VLANs， an administrator has decided to secure its VLAN network. Which three steps are required to secure this environment？ （Choose three.）（）”相关的问题
第1题
[单选题] An adapter state does not show available after a reboot.  Which of the following is the most probable cause？（）

A、DNS is not working properly  B、Ping is not working properly  C、The cables are disconnected  D、The device driver did not load properly  

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第2题
[单选题] A system administrator needs to replace a mirrored disk.  After performing the proper removal process and replacing the disk, which of the following set of commands should be performed to bring the disk back into production?（）

A、 reboot, mklvcopy, syncvg   B、 cfgmgr -vl ssar, chvg -va, syncvg   C、 cfgmgr, extendvg, syncvg   D、 extendvg, mklvcopy, syncvg  

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第3题
[] In RMAN， when the RESYNC CATALOG command is issued， in which two situations does the command file actually perform synchronization？（）

A、A.After the COPY command.  B、B.After adding a data file in the target database.  C、C.After adding a tablespace in the target database.  D、D.After adding a tablespace in the catalog database.  E、E.After dropping a data file in the catalog database.  F、F.After running SQL Loader to load a large amount of data.  

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第4题
[单选题] An administrator installed new components on a server. After the device installation， two of the components fail.Which of the following is the cause of the problem？（）

A、The server was not powered off correctly.  B、The proper ESD procedures were not used.  C、The devices were installed in the incorrect sequence.  D、The devices are incompatible with the system.  

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第5题
[单选题] The most crucial time for any bearing with regards to lubrication is （）

A、during low loads  B、after proper oil viscosity is reached  C、during starting  D、after cleaning filters  

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第6题
[多选题] After installing WebSphere Commerce V 5.6 using a quick installation， which of the following should be checked to verify the installation？（）

A、The installation log files  B、The Commerce tools can be launched and logged into properly  C、User ’wpadmin’ has been created  D、The structure of the installation directory  E、The WebSphere Application Server database schema  

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第7题
[单选题] Proper GMDSS watchkeeping includes（）.

A、monitoring all required frequencies in the proper mode  B、reading all displays and/or printouts after silencing an alarm  C、notifying the Master of any distress alerts  D、All of the above  

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第8题
[单选题] An administrator plans to apply a fix pack to the PowerHA software using a rolling migration. At what stage ofthe migration is a cluster verification supported？（）

A、Individually before each node is upgraded  B、Individually before and after each node is upgraded  C、Individually after each node has been upgraded  D、Collectively after all nodes have been upgraded  

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第9题
[] 10. public Object m（） { 11. Object o = new Float（3.14F）； 12. Object [] oa = new Object[1]； 13. oa[0] = o； 14. o = null； 15. return oa[0]； 16. } When is the Float object， created in line 11， eligible for garbage collection？（）  

A、A. Just after line 13.  B、B. Just after line 14.  C、C. Never in this method.  D、D. Just after line 15 （that is， as the method returns）.  

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第10题
[单选题] You work as a database administrator for Certkiller .com. In the Certkiller PRODUCTION database you have granted RESUMABLE system privilege to the CONNECT role.Resumablespace operation has been enabled for all user session. You want users NOT to be aware of any kind of space-related problems while performing transactions. Instead， you want the problem to be resolved by a database trigger automatically. Which combination of triggering time and event would you use to achieve this objective？（）

A、AFTER CREATE  B、AFTER SUSPEND  C、BEFORE CREATE  D、AFTER TRUNCATE  E、BEFORE SUSPEND  F、AFTER INSERT OR DELETE OR DELETE  H、BEFORE INSERT OR DELETE OR DELETE  

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