Which three best practices should be implemented at the campus backbone submodule to supportthe server farm module？ （）

• A、 Implement highly redundant switching and links with no single points or paths of failure.
• B、 Implement server load balancing.
• C、 Implement the Hot Standby Router Protocol （HSRP） for failover protection.
• D、 Implement intrusion detection with automatic notification of intrusion attempts in place.