【名词&注释】
路由器(router)、效率高(high efficiency)、广域网协议
[多选题]Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet? (Select two answer choices.)
A. Full-duplex Ethernet uses CSMA/CD to prevent collisions.
B. Half-duplex Ethernet uses a loopback circuit to detect collisions.
C. A full-duplex Ethernet card allows 20Mbps for data transmission.
D. Full-duplex Ethernet makes use of two pairs of wires for data.
E. An Ethernet hub can operate both half and full duplex simultaneously.
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举一反三：
[单选题]常见的LSA有几种类型()
A. 4
B. 5
C. 6
D. 7
[单选题]当拓扑信息完成交换，相邻路由器具有相同的LSDB时，下列哪项OSPF邻居状态是希望得到的()
A. 2-WAY
B. FULL
C. Exchange
D. Loading
[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.
[单选题]100baseT的速率是()Mbit/s
A. 1
B. 10
C. 100
D. 1000
[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.
[多选题]Using a subnet mask of 255.255.255.224, which of the IP addresses below can you assign to the hosts on this subnet? (Select all that apply)
A. 16.23.118.63
B. 87.45.16.159
C. 92.11.178.93
D. 134.178.18.56
E. 192.168.16.87
F. F. 217.168.166.192
[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]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
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