单项选择题
Which well-known community prevents a BGP speaker from announcing the associated prefix to itsinternal peers?（）
A. no-export B. no-advertise C. no-readvertise D. no-export-subconfed
单项选择题 What is the function of the helper router during a restart event in OSPF?（）
问答题 Click the Task button. Place the CoS processing steps in the correct sequence.
多项选择题 Which two steps are needed when configuring multiple RPs using MSDP within a single PIM domain? （）
