[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fiK5TGX1TlzzreGsb88BYFeQU5RMaamk8SAqggnZO0MY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":18,"related":19,"source":29,"type":30},[],"2023-05-08 04:26:18",8592005,[8,9,10,11],"集线器可以堆叠级连使用,线路总长度不能超过以太网最大网段长度","集线器只包含物理层协议","使用集线器的计算机网络中,当一方在发送时,其他机器不能发送","集线器只能提供信号的放大功能,不能中转信号",{"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},"1000006925","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4d7756eec5b2f5db5655029635290b33.jpeg","计算机网络技术（辽宁联盟）","5137247","第三章单元测试","有关集线器说法不正确的是________",[20,31,40,49,52,61],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],8591977,[24,25,26,27],"它是物理地址,MAC是物理地址的简称","硬件地址是传输数据时,在传输媒介访问控制层用到的地址","它是物理层地址,MAC是物理层的简称","它是链路层地址,MAC是链路层的简称","计算机在局域网络上的硬件地址也可以称为MAC地址,这是因为________","v2",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":30},[],8591988,[35,36,37,38],"(-1-1-1+1+1-1+1+1)","(-1-1+1-1+1+1+1-1)","(-1+1-1+1+1+1-1-1)","(-1+1-1-1-1-1+1-1)","共有四个站进行码分多址CDMA通信,四个站的序列为:A.(-1-1-1+1+1-1+1+1)B.(-1-1+1-1+1+1+1-1)C.(-1+1-1+1+1+1-1-1)D.(-1+1-1-1-1-1+1-1)现收到这样的码片序列:(-1+1-3+1-1-3+1+1)问哪个站发送了0",{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":29,"type":30},[],8592000,[44,45,46,47],"中继器","网桥","路由器","网关","在下列网间连接器中,在数据链路层实现网络互连_________",{"answer":50,"createTime":5,"id":6,"options":51,"question":18,"source":29,"type":30},[],[8,9,10,11],{"answer":53,"createTime":5,"id":54,"options":55,"question":60,"source":29,"type":30},[],8592015,[56,57,58,59],"电路交换技术","报文交换技术","分组交换技术","分组交换与电路交换结合技术","就交换技术而言,局域网中的以太网采用的是_________",{"answer":62,"createTime":5,"id":63,"options":64,"question":69,"source":29,"type":30},[],8592029,[65,66,67,68],"MAC地址在每次启动后都会改变","MAC地址一共有48比特,它们从出厂时就被固化在网卡中","MAC地址也称做物理地址,或通常所说的计算机的硬件地址","MAC地址每次启动后都不会变化","以下关于MAC的说法中错误的是________"]