在交换式局域网中,如果交换机采用直接交换方式,帧出错检测任务由哪一项完成?
A. 高层协议
B. 交换机
C. 交换机和结点主机
D. 结点主机
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如果已经为办公室的每台作为网络工作站的计算机配置了网卡、双绞线、RJ45接插件、交换机,那么要组建这个小型局域网时至少还要必须配置哪一项?
A. 一套局域网操作系统软件
B. 路由器
C. 一台作为服务器的高档PC
D. 调制解调器
要组建一个快速以太网,需要使用以下哪些基本的硬件设备与材料?
A. 100BASE-T交换机
B. 100BASE-T网卡
C. 路由器
D. 双绞线或光缆
Word BankA) detailsB)deafC) totoringD) lostE) dreamsF) motivationG) sympathyH) hearingI) simplyJ) frequencyK) hardlyL) hardM) predictingN) musicalO) desireRobbie Wilde has been enjoying his life as a DJ. He was born with perfect1, but is now completely2in his right ear and can 3 hear in his left. He grew up in a4home environment and started deejaying at age 18. With a strong5 to perfect his skills, he asked a well-known DJ for6.He has been working 7 and does not want his skills recognized 8 because people have 9for his disability. In this way, he sets a good examplefor other young people in chasing their10.
If stock prices are expected to drop dramatically, then, other things equal, the demand for stocks will ________ and that of Treasury bills will ________.
A. increase; increase
B. increase; decrease
C. decrease; decrease
D. decrease; increase