Problem management is an IT service management activity that is most likely to help with identifying the root cause of repeated instances of network latency. Problem management involves analyzing incidents that affect IT services and finding solutions to prevent them from recurring or minimize their impact. Change management is an IT service management activity that involves controlling and documenting any modifications to IT services or infrastructure. Incident management is an IT service management activity that involves restoring normal service operation as quickly as possible after an incident has occurred.
Configuration management is an IT service management activity that involves identifying and maintaining records of IT assets and their relationships. References: ISACA, CISA Review Manual, 27th Edition, 2018, page 334