1. [单选题]After connecting a PC to an available port on a switch, you find that the PC can not access any of the resources on the LAN. No other PC's connected to the switch appear to be having any issues. What is the most likely cause for this problem?
A. The router lacks a routing table entry for the new host
B. The host switch port is assigned to the incorrect VLAN
C. The host MAC address is incorrectly configured
D. A STP instance for the new host has not been initialized
E. The switch does not have the MAC address hard coded in the CAM table.
2. [单选题]路由器上“水平分割”的功能是：()
A. 分离端口
B. 阻止路由环路
C. 简化配置
D. 方便故障处理
3. [多选题]Which three statements are true about the operation of a full-duplex Ethernet network, which is being used in the Ezonexam LAN? (Choose three)
A. Ethernet hub ports are preconfigured for full-duplex mode.
B. The host network card and the switch port must be capable of operating in full-duplex mode.
C. There are no collisions in full-duplex mode.
D. In a full-duplex environment, the host network card must check for the availability of the network media before transmitting.
E. A dedicated switch port is required for each full-duplex node.
4. [单选题]把指定端口添加到VLAN的命令是：()
A. vlan
B. vlan-member ship
C. vtp
D. switch port
5. [单选题]为了阻止交换机环路，交换机上所采用的技术为（）
A. 水平分割
B. 生成树协议
C. 触发更新
D. 地址学习
6. [单选题]交换机转发数据到目的地依靠()
A. 路由表
B. MAC地址表
C. 访问权限表
D. 静态列表
7. [单选题]能够分配给设备的IP，应该是（）
A. 网络有效IP
B. 网络号
C. 网络广播地址
D. 任意IP
8. [单选题]命令“ping127.0.0.1”的功能是（）
A. 测试网卡是否正常
B. 测试网关是否正常
C. 测试TCP/IP协议是否正常
D. 测试介质是否正常
9. [单选题]哪个命令可以成功测试网络：()
A. Router>ping192.5.5.0
B. Routerping192.5.5.30
C. Router>ping192.5.5.256
D. Routerping192.5.5.255
10. [单选题]OSPF在同一区域内(intra-region)，下列说法正确的是（）
A. 每台路由器生成的LSA都是相同的
B. 每台路由器的LSDB(链路状态数据库)都是相同的
C. 每台路由器根据该LSDB计算出的最短路径树都是相同的
D. 每台路由器根据该最短路径树计算出的路由都是相同的
