What are two key characteristics of VTP? () ["VTP messages are sent out all switch-switch connections.","VTP L2 messages are communicated to neighbors using CDP.","VTP manages addition, deletion, and renaming of VLANs 1 to 4094.","VTP pruning restricts flooded traffic, increasing available bandwidth.","VTP V2 can only be used in a domain consisting of V2 capable switches.","VTP V2 performs consistency checks on all sources of VLAN information."]
1670SM设备可带()个扩展子架,扩展子架内只能接插()单元盘 ["3;","4;","A2S1;","A4ES1;","A4S1。"]
当代中国家庭教育的八大误区。
假设中继台的收、发信机共用天线,上下行频率分别为F1和F2.要防止中继台发射机对接收机产生干扰,应该对中继台设备采取下列措施() ["在发信机与天线间串联中心频率为F1的带阻滤波器,在收信机与天线间串联中心频率为F2的带阻滤波器","在发信机与天线间串联中心频率为F1的带通滤波器,在收信机与天线间串联中心频率为F2的带通滤波器","在发信机与天线间串联中心频率为F2的带阻滤波器,在收信机与天线间串联中心频率为F2的带阻滤波器","在发信机与天线间串联中心频率为F1的带阻滤波器,在收信机与天线间串联中心频率为F1的带阻滤波器"]
什么是发展性评价?
简述建立土地管理制度的客观必要性。