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.
Answer: A