网友您好, 请在下方输入框内输入要搜索的题目:

题目内容 (请给出正确答案)

On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)

A. The destination host sends a request to the source for retransmission.

B. The jam signal indicates that the collision has been cleared.

C. The hosts will attempt to resume transmission after a time delay has expired.

D. An electrical pulse indicates that the collision has cleared.

E. The router on the segment will signal that the collision has cleared.

F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.


参考答案

更多 “ On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously, resulting in a collision. Following this collision, what will the hosts do? (Select all valid answers)A. The destination host sends a request to the source for retransmission.B. The jam signal indicates that the collision has been cleared.C. The hosts will attempt to resume transmission after a time delay has expired.D. An electrical pulse indicates that the collision has cleared.E. The router on the segment will signal that the collision has cleared.F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission. ” 相关考题
考题 The ex-convict went to another pare of the country in an _________ to lend a new and law-abiding life. A.endeavorB.tryC.striveD.attempt

考题 [A] assignment[B] temptation[C] attempt[D] commission

考题 -We are going to have a dancing party tonight. Would you like to join us? -_____________________________________. A、trialB、contemptC、desireD、attempt

考题 当LAN内没有条件建立DNS服务器,但又想让局域网内的用户可以使用计算机名互相访问时,应配置 /etc/hosts 文件。

考题 Youareconfiguringatestnetwork.ThetestnetworkcontainsasubnetnamedLAN1.LAN1usesthenetworkIDof10.10.1.0/27.YouplantoaddanewsubnetnamedLAN2tothetestnetwork.LAN1andLAN2willbeconnectedbyarouter.YouneedtoidentifyavalidnetworkIDforLAN2thatmeetsthefollowingrequirements:(1)EnsuresthathostsonLAN2cancommunicatewithhostsonLAN1.(2)Supportsatleast100IPv4hosts.(3)UsesonlyprivateIPaddresses.WhichnetworkIDshouldyouuse?Toanswer,dragtheappropriatenetworkIDandsubnetmasktothecorrectlocationintheanswerarea.

考题 已经设置watchdog,在下面的无限循环体内重复执行计数器清零(喂狗)指令CLRWDT : while(1) { if(SMS_flag==1) //是否短信 { SMS_flag=0; if(read_sms()==1) //短信“SEND”? { read_modbus(); //读电表 DelayMs(20); send_sms(data_SMS,1); //发送短信 } } CLRWDT; //喂狗 } 若将CLRWDT放入条件函数内,可否?会发生什么?

考题 下面哪个函数没有在运输层可靠数据传输协议中用到()。A.rdt_send()B.udt_send()C.udt_rev()D.deliver_data()

考题 2、下面哪个函数没有在运输层可靠数据传输协议中用到()。A.rdt_send()B.udt_send()C.udt_rev()D.deliver_data()

考题 【单选题】游客们正在努力减少他们的碳足迹,同时,他们住的宾馆也在内蒙古为他们植树。A.The tourists are making an effort to reduce their carbon footprint. Simultaneously, they are planting trees for themselves in Inner Mongolia.B.The tourists make an effort to reduce their carbon footprint. Simultaneously, their hotel is planting trees for them in Inner Mongolia.C.The tourists are making an effort to reduce their carbon footprint. Simultaneously, their hotel is planting trees for them in Inner Mongolia.

考题 对于以下代码描述有误的是? val data = Map(1 -> "One", 2 -> "Two") val res = for((k, v) <- data; if(k > 1)) yield vA.运行后res的结果为List("Two")B.运行后res的结果为List("One", "Two")C.对映射data中的每一个(键,值)对,k被绑定对键,而v则被绑定到值D.其中的if(k > 1)是一个守卫表达式