During a network outage, a technician discovers a new network switch that was not listed in the support documentation. The switch was installed during a recent change window when a new office was added to the environment. Which of the following would most likely prevent this type of mismatch after next month's change window?


A. Performing annual network topology reviews
B. Requiring all network changes include updating the network diagrams
C. Allowing network changes once per year
D. Routinely backing up switch configuration files