Is a router for network interconnection of computer equipment, it works in the OSI reference model ().

<Huawei>display startup
MainBoard:
Startup system software: sd1:/ar2220-v200r003c00spc200.cc
Next startup system software: sd1:/ar2220-v200r003c00spc200.cc
Backup system software for next startup: null
Startup saved-configuration file: null
Next startup saved-configuration file: null
Startup license file: null
Next startup license file: null
Startup patch package: null
Next startup patch package: null
Startup voice-files: null
Next startup voice-files: null
Refer to the display output. Which statement is false?

What is the total length of the Rag field in the RSTP BPDU message?

Which of the following statements about the Prefix Segment is wrong?

What are the advanced ACLs on Huawei devices that can be used to filter? (multiple choice)