【名词&注释】
路由器(router)、交换机(switch)、效率高(high efficiency)、广域网协议
[单选题]下面有关交换机的描述中,正确的是()
A. 所有交换机都支持VLAN功能
B. 交换机端口数量最多为48口
C. 交换机独占带宽
D. 交换机端口的最大速率为100Mbit/s
查看答案&解析查看所有试题
学习资料:
[单选题]常见的LSA有几种类型()
A. 4
B. 5
C. 6
D. 7
[单选题]扩展IP访问权限表的表号范围是:()
A. 1—100
B. 1-99
C. 100-199
D. 800-899
[单选题]配置路由器特权用户“加密密码”的命令是:()
A. password
B. enable password
C. enable secret
D. passwd
[单选题]关于PPP和HDLC的说法中,错误的是()
A. PPP是通用协议,HDLC是CISCO私有协议
B. PPP有验证功能,HDLC无验证功能
C. PPP效率低,HDLC效率高
D. 在配置ISDN时,广域网协议不能封装成PPP,但可以封装成HDLC
[单选题]路由器上激活端口的命令是()
A. shutdown
B. no shutdown
C. up
D. noup
[多选题]下列哪一设备工作时,要用到OSI的七个层(一层到七层)()
A. PC
B. 网管机
C. WEB服务器
D. 交换机
E. 路由器
[单选题]The corporate head office of Ezonexam has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence, what will happen?
A. UDP will send an ICMP Information Request to the source host.
B. UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.
C. UDP will drop the datagrams.
D. UDP will use the sequence numbers in the datagram headers to reassemble the data in the correct order.
E. UDP will not acknowledge the datagrams and wait for a retransmission of the datagrams.
[多选题]You need to configure an 802.1Q link on a Ezonexam switch. Which commands, when used together, would do this? (Select two answer choices)
A. Switch(vlan) mode trunk
B. Switch(config) switchport access mode trunk
C. Switch(config-if) switchport mode trunk
D. Switch(config-if) switchport trunk encapsulation dot1q
E. Switch(config) switchport access mode 1
F. F. Switch(vlan) trunk encapsulation dot1q
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