更多"Ethernet"的相关试题:
[单项选择]Gigabit Ethernet 的传输速率比传统的10Mbps Ethernet 快100倍，但是它们然保留着和传统的Ethrnet的相同的( )。
A. 物理层协议
B. 桢格式
C. 网卡
D. 集线器
[多项选择]PWE3仿真Ethernet业务时，OptiXPTN支持哪几种Ethernet业务类型（）
A. E-Line
B. E-Tree
C. E-AGGR
D. E-LAN
[单项选择]Gigabit Ethernet的传输速率比传统的10Mbps Ethernet快100倍，但是它仍然保留着和传统的 Ethernet的相同的________。
A. 物理层协议
B. 帧格式
C. 网卡
D. 集线器
[单项选择]在路由器上运行了show int Ethernet 0命令后，提示Ethernet 0 is up line protocol is down，则表示（）
A. 端口正常
B. 连接故障，路由器未接到LAN上
C. 接口故障
D. 接口被人为地关闭
[多项选择]For Ethernet-to-Ethernet routers, such as the Cisco 831 behind a cable modem or DSL bridge, a traffic shaper is configured. This is required since the output 10-Mbps interface will not be congested. Which two statements are true?（）
A. The parent policy-map shapes and the child policy-map queues.
B. The mean-rate and burst-size must always be the same value.
C. This will not work without a Dialer interface configured.
D. The shaper provides congestion feedback.
[单项选择]下列关于Ethernet工作原理的描述中，正确的是( )。 Ⅰ．在Ethernet中，数据通过总线发送 Ⅱ．连在总线上的所有结点都能“收听”到发送结点发送的数据信号 Ⅲ．Ethernet与Token Bus的帧结构是相同的 Ⅳ．Ethernet适用于对数据传输实时性要求高的应用环境
A. Ⅰ和Ⅱ
B. Ⅰ和Ⅲ
C. Ⅱ和Ⅲ
D. Ⅲ和Ⅳ
[多项选择]PCA、PCB分别与S3610交换机SWA的端口Ethernet1/0/2、Ethernet1/0/3相连，服务器与端口Ethernet1/0/1 相连。如果使用端口隔离技术使PC间互相隔离，但PC都能够访问服务器，则需要在交换机上配置哪些命令？（）
A. [SWA] port-isolate enable
B. [SWA-Ethernet1/0/2] port-isolate enable
C. [SWA-Ethernet1/0/3] port-isolate enable
D. [SWA-Ethernet1/0/1] port-isolate uplink-port
[单项选择]假设一台NE16路由器Ethernet 2/0/0以太网口的发送帧类型为Ethernet_SNAP，MTU为默认值，一个总长度为5950的IP报文（报文头无选项字段）要从这个端口被转发出去，那么这个IP报文将被封装成（）个数据链路层帧。
A. 2
B. 3
C. 4
D. 5
[单项选择]目前应用最为广泛的一类局域网是Ethernet网。Ethernet的核心技术是它的随机争用型介质访问控制方法，即
A. TokenRing
B. TokenBus
C. CSMA／CD
D. FDDI
[单项选择]目前应用最为广泛的—类局域网是Ethernet网。Ethernet的核心技术是它的随机争用型介质访问控制方法，即_______。
A. Token Ring
B. Token Bus
C. CSMA/CD
D. FDDI
[单项选择]Ethernet物理地址长度为（）
A. 6bit
B. 24bit
C. 48bit
D. 64bit
[多项选择]When multiple PPP over Ethernet subscribers connect using the same DSL modem, which two attributes does the ERX use to differentiate between subscribers? （）(Choose two.)
A. PPP session ID
B. subscriber name
C. source MAC address
D. destination MAC address
[单项选择]Which process occurs first during the Ethernet Discovery Stage process for a PPPoE service offering?（）
A. The ERX router sends an Active Discovery Offer message.
B. The ERX router sends an Active Discovery Initiation message.
C. The customer device sends an Active Discovery Offer message.
D. The customer device sends an Active Discovery Initiation message
[单项选择]Which of the following describes 1Gigabit Ethernet?（）
A. 10GBase-ER
B. 10Base-2
C. 1000Base-T
D. 100Base-5
[单项选择]Which statement is true regarding an Ethernet collision domain?（）
A. If a router is used, the collision domain includes all devices connected to the router
B. If a hub is used, the colision domain is limited to each device and the hub
C. If a switch is used, the collision domain is limited to each device and the switch
D. If a bridge is used, the collision domain includes all devices connected to the bridge
[多项选择]The PPP over Ethernet Discovery Stage determines which two parameters? （）(Choose two.)
A. session ID
B. authentication server
C. IP address of the client
D. MAC address of the ERX router
