You want to upgrade the Ezonexam LAN so that all ports opera

【名词&注释】

路由表(routing table)、互联网(internet)、路由器(router)、数据包(packet)、端口号(port number)、数据链路层(data link layer)、源地址(source address)

[单选题]You want to upgrade the Ezonexam LAN so that all ports operate in full duplex mode. Which statement is true about full-duplex Ethernet when comparing to half-duplex Ethernet?

A. Full-duplex Ethernet consists of a shared cable segment. Half-duplex provides a point-to-point link
B. Full-duplex Ethernet uses two wires to send and receive. Half-duplex Ethernet uses one wire to send and receive
C. Full-duplex Ethernet can provide higher throughput than can half-duplex Ethernet of the same bandwidth
D. Full-duplex Ethernet uses a loopback circuit to detect collisions. Half-duplex Ethernet uses a jam signal
E. None of the above

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学习资料：

[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

[单选题]IP扩展访问列表的数字标示范围是多少（）。

A. 0-99
B. 1-99
C. 100-199
D. 101-200

[单选题]为了使配置私有IP的设备能够访问互联网，应采用的技术是()

A. NAT
B. VLAN
C. ACCESS-LIST
D. DDR

[单选题]在路由表中到达同一网络的路由有：静态路由、RIP路由、IGRP路由，OSPF路由，则路由器会选用哪条路由传输数据：()

A. 静态路由
B. RIP路由
C. IGRP路由
D. OSPF路由

[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

[单选题]OSI七层模型中，数据链路层^{(data link layer)}的数据封装名称为（）

A. 比特
B. 帧
C. 包
D. 段

[单选题]路由器上，设置端口速率的命令是（）

A. clock rate
B. bandwidth
C. set
D. encap

[单选题]While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?

A. The data link layer
B. The application layer
C. The access layer
D. The session layer
E. The network layer

[单选题]Study the Exhibit below carefully:London#show vtp

A. VTP Version: 2
B. Configuration Revision: 0
C. Maximum VLANs supported locally: 64
D. Number of existing VLANs: 5
E. VTP Operating Mode: Client
F. VTP Domain Name: London
G. VTP Pruning Mode: Disabled
H. VTP V2 Mode: Disabled
I. VTP Traps Generation: Disabled
J. Based on the information given above, what is the VTP function of this particular switch?
K. Learn and save VTP configuration in the running configuration.
L. Create and change VLANs.
M. Forwards information about VTP configuration.
N. VTP is disabled on this device.
O. VTP is not saved to NVRAM.

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