There have been some failures of the company’s customer-facing website. A security engineer
has analyzed the root cause to be the WAF. System logs show that the WAF has been down for
14 total hours over the past month in four separate situations. One of these situations was a two
hour scheduled maintenance activity aimed to improve the stability of the WAF. Which of the
following is the MTTR, based on the last month’s performance figures?
A.
3 hours
B.
3.5 hours
C.
4 hours
D.
4.666 hours