单选题As part of fallover testing of a corporate database server， client application connectivity must be verified. Which of the following would best verify the application functionality？（）APerform a ping client verification test.BReview the number of activ
题目
单选题
As part of fallover testing of a corporate database server， client application connectivity must be verified. Which of the following would best verify the application functionality？（）
A
Perform a ping client verification test.
B
Review the number of active application processes.
C
Perform successful reads and writes to the application.
D
Run netstat -an to verify client connections to the listening ports.