Generally, which of the following operations will interrupt services on live networks?

Operations that generally interrupt services on live networks include (A) cold reset on a service board, (C) hardware loopback, and (D) software loopback. Cold reset reinitializes hardware and can disrupt traffic; hardware loopback physically loops the signal causing interruption; software loopback also reroutes signals internally, impacting live data flow. Warm reset, however, is designed to minimize or avoid service interruptions by restarting software processes without full hardware reinitialization. HCIP-Transmission emphasizes understanding these operational impacts for network maintenance planning to minimize service downtime.