During cluster fallover testing，the administrator determines that additional work is required to stop existing test applications on the standby node，prior to starting the production applications on the surviving node.  To manage this type of requirement，which step should be performed first？（）  

A、 Create a custom pre/post event.

B、 Add a custom user defined event.

C、 Define custom error notification.

D、 Modify the test application server.

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• A cluster administrator has defined a custom error notification method that will email and  administrator when a temp error is detected on an individual hdisk. What method should be used to test this functionality？（）  

  A、 sendmail -bi

  B、 yes >/dev/kmem

  C、 emulate errlog entry

  D、 reducevg vgname hdisk#

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• Which two statements describe the criteria bandwidth detection uses to dynamically alter bandwidth allocation?（）(Choose two.)

  A

  Throughput is raised as latency decreases.

  B

  Throughput is based on available bandwidth.

  C

  Throughput is lowered as latency decreases.

  D

  Latency is measured by SYNs returned for each metapacket

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• Which three circumstances would prevent traceroute from displaying the WAN IP addresses? （）(Choose three)

  A

  The WAN link is down.

  B

  IPSec is enabled on the WX.

  C

  Traceroute is enabled for compression.

  D

  The network is configured using static routes.

  E

  The local and remote cables are accidentally swapped.

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• A Volume Group appvg has been converted to enhanced concurrent volume mode using C- SPOC. How should the Volume Group be brought online？（）   

  A、 Using varyonvg appvg.

  B、 Using varyonvg -f appvg.

  C、 Under the control of resource group management.

  D、 Automatically at boot time using chvg -ay appvg.

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• 设谓词P（x）：x是奇数，Q（x）：x是偶数，谓词公式∃x（P（x）∨Q（x））在哪个个体域中为真？（　　）

  A、自然数

  B、实数

  C、复数

  D、A，B，C均成立

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