首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
计算机
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?
admin
2009-05-19
57
问题
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?
选项
A、when all switches have the same BID as the root switch
B、when all switches have received the MAC address of each neighboring switch
C、when every enabled switch port has been assigned a unique identifier
D、when every operating switch port is in either the blocking or forwarding state
E、when all switches are in either client, server, or transparent mode
答案
D
解析
Explanation:
States of the Spanning Tree Protocol:
Blocking A blocked port won’t forward frames; it just listens to BPDUs. All ports are in blocking state by default when the switch is powered up. The purpose of the blocking state is to prevent the use of looped paths.
Listening The port listens to BPDUs to make sure no loops occur on the network before passing data frames. A port in listening state prepares to forward data frames without populating the MAC address table.
Learning The switch port listens to BPDUs and learns all the paths in the switched network. A port in learning state populates the MAC address table but doesn’t forward data frames.
Forwarding The port sends and receives all data frames on the bridged port.
Disabled A port in the disabled state does not participate in the frame forwarding or STP. A port in the disabled state is virtually nonoperational. In Blocking States, all ports are in blocking state. The purpose of the blocking state is to prevent the use of looped paths. The forward state sends and receives the all data frames in a loop free network. So these two states are considered to be fully converged.
转载请注明原文地址:https://kaotiyun.com/show/zShZ777K
本试题收录于:
思科640802题库思科认证分类
0
思科640802
思科认证
相关试题推荐
Inthissection,youareaskedtowriteanessaybasedonthefollowinginformation.Makecommentsandexpressyourownopinion.
Youwanttowithdrawfromacourse/somecourses.Writealetterofrequesttotheteacherintheacademicadministrationto1)i
Europeisnotagender-equalityheaven.Inparticular,thecorporateworkplacewillneverbecompletelyfamily-friendlyuntilwo
Readthefollowingtextandanswerthequestionsbyfindinginformationfromtherightcolumnthatcorrespondstoeachofthema
AskjustaboutanyhighschoolseniororjuniorinAmerica—ortheirparents—andthey’lltellyouthatgettingintoaselectivec
UsingFacebookmakespeoplesadder,atleastaccordingtosomeresearch.Burjustwhatisitaboutthesocialnetworkthattakes
Writealettertorecommendyourstudent,LiXu,forapositionofadministratorinacompany.Youshouldincludethedetailsyo
使用“连接导向”菜单方式添加北京大学站点。
在【管理工具】的【计算机管理】窗口中,查看用FTP的属性,并将其从用户组中删除。
允许Microsoft收集有关我如何使用MSNMessenger匿名信息。
随机试题
IDEA密钥的长度为()
女性,50岁,右乳外上象限肿物,1.5cm×1.5cm,质硬,活动差,腋淋巴结未触及假设诊断为乳腺癌应为哪期
某市人民检察院在审查起诉李某盗窃一案中,发现犯罪事实并非李某所为,而真正的犯罪人可能是本案的证人赵某,人民检察院应当如何处理?
对于跨度大于6m的屋架和跨度大于( )m的梁,其支承面下为砖砌体时,应设置混凝土或钢筋混凝土垫块;当墙中设有圈梁时,垫块与圈梁宜浇成整体。
土方开挖前,工程质量检查的内容有()。
“备案号”栏:()。“随附单据”栏;()。
某建设工程建设投资为3176.39万元,流动资金为436.55万元,项目投产期年利润总额为845.84万元,达到设计能力的正常年份(生产期)的年利润总额为1171.89万元,年贷款利息为82万元,则该项目的总投资收益率为()。
甲企业破产清算时,将价值1000万元的房地产抵偿债务,将价值2000万元的房地产转让给乙企业,乙企业接受了甲企业原有职工的50%。当事人各方合计应缴纳契税为()。(契税适用税率4%)
武术教学中,练习的方法有下列哪些?()
Accordingtothepassage,Indiannameswereimportantbecausethey______.______gavethesecondnameofanIndian.
最新回复
(
0
)