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.)

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  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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• 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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• Which three static objects are cached by the client-side WXC device?（） (Choose three.)

  A

  XML

  B

  HTML

  C

  JPEG

  D

  JavaScripts

  E

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• （多选）下列等值式成立的有（　　）。

  A

  P→Q⇔¬Q→¬P

  B

  P∨（P∧R）⇔R

  C

  P∧（P→Q）⇔Q

  D

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• 设f是由群到群的同态映射，则Ker（f）是（　　）。

  A、G`的子群

  B、G的子群

  C、包含G`

  D、包含G

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