1. [单选题]路由表中，某条路由的“路由代码为D”，则表明该路由为（）
A. 直连路由
B. 静态路由
C. IGRP路由
D. EIGRP路由
2. [多选题]Ezonexam is migrating to a private IP addressing scheme. Which of the following describe the use of private IP addresses? (Choose two)
A. Addresses chosen by Ezonexam.com to communicate with the Internet.
B. Addresses that cannot be routed through the public Internet.
C. Addresses that can be routed through the public Internet.
D. A scheme to conserve public addresses.
E. Addresses licensed to enterprise or ISPs by an Internet registry organization.
3. [单选题]介质100BaseT的最大传输距离是：()
A. 10m
B. 100m
C. 1000m
D. 500m
4. [单选题]下列对RIP的配置中，合法的命令是（）
A. router rip 100 network 10.12.0.0
B. router rip 100 network 10.0.0.0
C. router rip network 10.12.0.0
D. router rip 100 network 10.0.0.0
5. [单选题]查看路由表的命令是：()
A. show interface
B. show run
C. show ip route
D. show table
6. [多选题]CDP is being used throughout the Ezonexam network. What are two reasons why the Ezonexam network administrator would use CDP? (Choose two)
A. To determine the status of network services on a remote device
B. To obtain the IP Address of a connected device in order to telnet to the device
C. To verify the type of cable interconnecting two devices
D. To verify Layer 2 connectivity between two devices when Layer 3 fails
E. To obtain VLAN information from directly connected swticehs
F. F. To determine the status of the routing protocols between directly connected routers
G. G. To support automatic network failover during outages
7. [单选题]What is the purpose of the spanning-tree algorithm in a switched LAN?
A. To provide a monitoring mechanism for networks in switched environments.
B. To manage VLANs across multiple switches.
C. To prevent switching loops in networks with redundant switched paths.
D. To segment a network into multiple collision domains.
E. To prevent routing loops in networks.
8. [单选题]扩展ACL和标准ACL的区别（）。
A. 标准的ACL在禁止和允许方面比扩展的ACL更高的精度
B. 扩展的ACL核查数据包的源地址(source address)和目标地址和端口号
C. 他们都可以查端口号
D. 他们都可以查特殊协议和其他参数
9. [单选题]以下特殊区域中哪一个没有自动下发缺省路由（）
A. 末梢区域
B. 完全末梢区域
C. NSSA区域
D. 完全NSSA区域
10. [多选题]网络中经常使用“帧中继”服务，请选出帧中继的优点（）
A. 偷占带宽
B. 提供拥塞管理机制
C. 可以使用任意广域网协议
D. 灵活的接入方式
