(32pcqpcq principle analysis and brief PCQ example voice video 26 minutes 15 seconds 33htb (1) principle introduction introduces the relevant theory of HTB priority flow control, focusing on the relationship between limit at and max limit, as well as the discussion of several HTB application cases. Voice video 31 minutes 11 seconds 34htb (2) questions that need to be paid attention to in actual combat to do HTB and how to check whether the HTB is successful, finally carry out the actual operation, deepen the understanding of HTB, voice video 28 minutes 22 seconds 35ddns special practice DDNS (changeip) brief practice, and its original explanation, and finally clarify the applicable occasions and conditions voice video 19 minutes 53 seconds 36ros script and programming (I) start from the definition of the most basic variables to the reference of variables, Key words, etc. explain one by one, speak through the voice video for 27 minutes and 53 seconds)