In addition to numerous normal service packets, the CPUs of devices on a network may...

A is correct – Local attack defense can classify and prioritize packets (e.g., OSPF, BGP, SSH) and ensure critical protocols are processed first by the CPU.

B is correct – The dynamic link protection function ensures session-based applications (like SSH) are not disrupted even during a CPU attack.

C is false – Different protocols have different importance levels , so individual rate limits should be configured, not a uniform one.

D is correct – CPU protection also applies to management interfaces , such as those used for Telnet, SSH, or SNMP.

Reference from Huawei HCIP-Datacom-Core Technology Study Guide:

“Devices support local attack defense by classifying packets, setting priorities, and limiting rates to protect CPU resources. These policies also apply to the management interface.”

(Chapter: Network Security – Section: Local Attack Defense)