Which two statements about the various implementations of STP are true?() ["mon Spanning Tree maintains a separate spanning-tree instance for each VLAN configured in the network.","The Spanning Tree Protocol (STP) is an evolution of the IEEE 802.1w standard.","Per-VLAN Spanning Tree (PVST) supports 802.1Q trunking.","Per-VLAN Spanning Tree Plus(PVST+) is an enhancement to 802.1Q specification and is supported only on Cisco devices.","Rapid Spanning Tree Protocol (RSTP) includes features equivalent to Cisco PortFast, UplinkFast, and BackboneFast for faster network reconvergence.","Multiple Spanning Tree (MST) assumes one spanning-tree instance for the entire Layer 2 network, regardless of the multiple number of VLAN"]
静态网页和动态网页工作原理上的区别?
质量问题发生的原因有()、违背建设程序、违反法规行为、施工与管理问题、使用不合格的原材料、制品及设备 ["地质勘察原因","设计差错","自然环境因素","使用不当"]
()命令能查看运行配置。 ["show version","show mac-address-table","show ip protocol","show running-config"]
配置IIS中的web主目录,其主要目录可以来源于哪些方面?
()是中国精神的继承者和铸造者,是实现中国梦的坚强领导核心。