What is the correct order of steps for upgrading a cisco wcs？（）
- A、back up the database， stop the wcs， upgrade the wcs， restore the database， start the wcs
- B、stop the wcs， back up the database， upgrade the wcs， restore the database， start the wcs
- C、back up the database， stop the wcs， upgrade the wcs， start the wcs， restore the database
- D、stop the wcs， back up the database， upgrade the wcs， start the wcs， restore the database
正确答案:B
答案解析:有
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