【名词&注释】
路由器(router)、交换机(switch)、数据包(packet)、帧中继(frame relay)
[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
查看答案&解析
举一反三：
[单选题]IP地址为：192.168.50.70，掩码为：255.255.255.248，则该IP和掩码结合，共划分了多少个子网（不包括全0子网和全1子网）（）
A. 8
B. 30
C. 6
D. 14
[单选题]如果把路由器的某个端口的IP配置为：192.168.10.64，掩码配置为：255.255.255.248，则该端口（）
A. 能和其他设备正常通信
B. 会变成“administratively down”状态
C. 端口被烧毁
D. 出现错误提示，配置命令执行失败
[多选题]When you compare the differences between half-duplex and full-duplex Ethernet, which of the following characteristics are exclusive to half-duplex? (Select two answer choices)
A. Half-duplex Ethernet operates in a shared collision domain.
B. Half-duplex Ethernet operates in an exclusive broadcast domain.
C. Half-duplex Ethernet has efficient throughput.
D. Half-duplex Ethernet has lower effective throughput.
E. Half-duplex Ethernet operates in an exclusive collision domain.
[多选题]交换机的三大功能为（）
A. 地址学习
B. 转发过滤
C. 消除回路
D. 发送数据包
[单选题]帧中继(frame relay)环境中，CIR的含义是（）
A. 提高线路速率
B. 保证线路速率
C. 降低线路速率
D. 配置线路速率
[单选题]Which one of the following characteristics is true regarding the use of hubs and switches?
A. Hubs can have their ports be configured with VLANs
B. Using hubs is costly with regard to bandwidth availability.
C. Switches can not forward broadcasts.
D. Switches are more efficient than hubs in processing frames.
E. Switches increase the number of collision domains in the network.
[单选题]交换机上VLAN的功能描述中，正确的是（）
A. 可以减少广播域的个数
B. 可以减少广播对网络性能的影响
C. 可以减少冲突域的个数
D. 可以减小冲突域的容量
[多选题]The Ezonexam network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? (Choose two)
A. ARP
B. CDP
C. DHCP
D. DNS
E. ICMP
本文链接：https://www.zhukaozhuanjia.com/download/n53zj0.html
