Which of the following represents a valid reason for testing a patch on a nonproduction system…?

Which of the following represents a valid reason for testing a patch on a nonproduction system, before applying it to a production system?

Which of the following represents a valid reason for testing a patch on a nonproduction system, before applying it to a production system?

A.
Patches may re-enable services previously disabled.

B.
Patches are a kind of virus.

C.
Patches always overwrite user data.

D.
Only patches on vendor-pressed CDs can be trusted.

E.
Patches usually break important system functionality.



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