题目内容

At Layer 2 of the OSI model, which component connects a host to the network media？（）

A. Hub
B. Switch
C. Bridge
D. NIC
E. Transceiver

查看答案

搜索结果不匹配？点我反馈

更多问题

用光学镜片矫正屈光不正的原理是：镜片焦度弥补了戴镜者的生理光学性缺陷，使戴镜后满足视觉光学上的共轭关系。（)

顾客佩戴渐进多焦点出现中距离、近距离单侧向模糊，原因是视轴水平向偏离渐变通道。（)

AcampusinfrastructuresupportswirelessclientsviaCiscoAironetAGSeries1230，1240，and1250accesspoints.WithDNSandDHCPconfigured，the1230and1240accesspointsappeartobootandoperatenormally；however，the1250accesspointsdonotseemtooperatecorrectly.Whatisthemostlikelyissuecausingthisproblem？（）

A. PoE
B. DHCPwithoption150
C. DHCPwithoption43
DNS
E. switchportdoesnotsupportgigabitspeeds

镜片染色的浓度不会影响到镜片对可见光的透光率。（)