When evaluating the Wireless Access Control CIS Control, which of the following systems needs to be tested?

IDS alerts at Service Industries are received by email. A typical day process over 300 emails with fewer than
50 requiring action. A recent attack was successful and went unnoticed due to the number of generated alerts.
What should be done to prevent this from recurring?

A breach was discovered after several customers reported fraudulent charges on their accounts. The attacker had exported customer logins and cracked passwords that were hashed but not salted. Customers were made to reset their passwords.
Shortly after the systems were cleaned and restored to service, it was discovered that a compromised system administrator's account was being used to give the attacker continued access to the network. Which CIS Control failed in the continued access to the network?

Which of the following is a benefit of stress-testing a network?