1, STP, RSTP and MSTP:STP, RSTP and MSTP are three spanning tree protocols supported by Huawei switches, which are mainly used to solve network loop problems. The degree of understanding and mastery, and the ability to apply in practice.

2. Basic knowledge of IPv6: IPv6 is the next generation Internet protocol, and Huawei's certification of basic knowledge of IPv6 on ICT computing track is one of the compulsory contents.