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本主题由 Cyndi 于 2008-7-25 20:07 关闭

maodou521

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发表于:2007-8-9 09:06　　标题：CCNA日日做题(8月11日)
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第一章规划设计
第一部分使用思科技术设计小型局域网

QUOTE:

QUESTION NO: 1

Which of the following devices can an administrator use to segment their LAN? (Choose all that apply)
下列那些设备可以用来将局域网分段?(多选)
A. Hubs
B. Repeaters
C. Switches
D. Bridges
E. Routers
F. Media Converters
G. All of the above
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QUOTE:

QUESTION NO: 2
Routers perform which of the following functions? (Select Three)
路由器可以提供下列哪些功能?(3项)
A. Packet switching
B. Collision prevention on a LAN segment.
C. Packet filtering
D. Broadcast domain enlargement
E. Broadcast forwarding
F. Internetwork communication
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QUOTE:

UESTION NO: 3
Within the TestKing office, The Sales and Production networks are separated by a router as shown in the diagram below:
Which of the following statements most accurately describes the haracteristics of the above networks broadcast and collision domains? (Select the two best answer choices)

如图所示：TestKing公司的销售部和产品部的网络用一个路由器分段，请分析该网络中冲突域和广播域的数目？

A. There are two broadcast domains in the network.
B. There are four broadcast domains in the network.
C. There are six broadcast domains in the network.
D. There are four collision domains in the network.
E. There are five collision domains in the network.
F. There are seven collision domains in the network.

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QUOTE:

QUESTION NO: 4
The TestKing corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect
of this change?
TK公司的局域网是一个"平"的网络,你决定用一个路由器将其划分成两段,这对网络中中的冲突域和广播域会产生哪些影响?
A. The number of broadcast domains will be decreased.
B. It will make the broadcasting of traffic between domains more efficient between segments.
C. It will increase the number of collisions.
D. It will prevent segment 1's broadcasts from getting to segment 2.
E. It will connect segment 1's broadcasts to segment 2.
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QUOTE:

QUESTION NO: 5
Which of the following are benefits of segmenting a network with a router? (Select
all that apply)
利用路由器对网络分段的优点是什么(多选)？

A. Broadcasts are not forwarded across the router.
B. All broadcasts are completely eliminated.
C. Adding a router to the network decreases latency.
D. Filtering can occur based on Layer 3 information.
E. Routers are more efficient than switches and will process the data more quickly.
F. None of the above.
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QUOTE:

QUESTION NO: 6
The TestKing Texas branch network is displayed in the following diagram:
Of the following choices, which IP address should be assigned to the PC host?

网络拓扑图如下，电脑主机应该设置哪个IP?

A. 192.168.5.5
B. 192.168.5.32
C. 192.168.5.40
D. 192.168.5.63
E. 192.168.5.75

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QUOTE:

QUESTION NO: 7
The Testking.com network is displayed in the diagram below:
公司的网络拓扑图如下,该网络中共有多少个冲突域?

Based on the diagram above, how many collision domains are present in the TestKing.com network?

A. One
B. Two
C. Three
D. Four
E. Five
F. Six
G. Fourteen

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QUOTE:

QUESTION NO: 8
The TestKing network is displayed in the following diagram:
公司的网络拓扑图如下公司的网络拓扑图如下:那些设备可以同时传输而不会产生冲突？

Based on the diagram shown above, which of the devices shown can transmit simultaneously without causing collisions?

A. All hosts
B. Only hosts attached to the switch
C. All hosts attached to the hub and one host attached to the switch
D. All hosts attached to the switch and one host attached to the hub

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QUOTE:

QUESTION NO: 9
The TestKing network is displayed in the diagram below:
Referring to the devices shown above, which statements are true in this scenario?
公司的网络拓扑图如下:下列说法中哪两句正确?(Select two)

A. All the devices in both networks will receive a broadcast to 255.255.255.255 sent by host TestKingA.
B. Only the devices in network 192.168.1.0 will receive a broadcast to 255.255.255.255 sent by host TestKingA.
C. All the devices on both networks are members of the same collision domain.
D. The hosts on the 192.168.1.0 network form one collision domain, and the hosts on the 192.168.2.0 network form a second collision domain.
E. Each host is in a separate collision domain.

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QUOTE:

QUESTION NO: 10
Given the choices below, which address represents a unicast address?
下列那个地址代表单播地址?

A. 224.1.5.2
B. FFFF. FFFF. FFFF.
C. 192.168.24.59/30
D. 255.255.255.255
E. 172.31.128.255/18

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回复后,有答案跟解析

[ 本帖最后由 maodou521 于 2007-8-11 10:00 编辑 ]

边测边学DB2，把握数据库应用最前沿（豪华大礼：罗技炫酷键鼠、50份卓越礼卡！）

2007-8-9 09:06

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发表于:2007-8-9 09:18　

看看我做对不对

51CTO技术交流群欢迎忠实坛友加入！（附群规）

2007-8-9 09:18

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发表于:2007-8-9 09:49　

好方法，支持！！

边测边学DB2，把握数据库应用最前沿（豪华大礼：罗技炫酷键鼠、50份卓越礼卡！）

2007-8-9 09:49

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发表于:2007-8-9 09:58　

网桥没选，幸福。网桥是什么啊？哈哈

边测边学DB2，把握数据库应用最前沿（豪华大礼：罗技炫酷键鼠、50份卓越礼卡！）

2007-8-9 09:58

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发表于:2007-8-9 10:01　

网桥(Bridge)又称桥接器，是一种在链路层实现局域网互连的存储转发设备。网桥从一个局域网接收MAC帧，拆封、校对、校验之后，按另一个局域网的格式重新组装，发往它的物理层。由于网桥是链路层设备，因此不处理数据链路层以上层次协议所加的报头，不能作这些层次的修改

网桥的用途有以下几点：
　　(1)连接同构型LAN;
　　(2)扩展工作站的平均占有频带;
　　(3)扩展LAN的地址范围;
　　(4)提高网络性能及可靠性;
　　(5)灵活地适应各种不同应用的需要

边测边学DB2，把握数据库应用最前沿（豪华大礼：罗技炫酷键鼠、50份卓越礼卡！）

2007-8-9 10:01

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发表于:2007-8-9 11:24　

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