The Border Gateway Protocol(BGP)is an interautonom...

第1题

不同AS之间使用的路由协议是（）

A．BGP（border gateway protocal）

B．ISIS

C．OSPF

D．RIP

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第2题

● The Border Gateway Protocol （BGP) is an interautonomous system （71） protocol. The primar

● The Border Gateway Protocol (BGP) is an interautonomous system （71） protocol. The primary function of a BGP speaking system is to exchange network （72） information with other BGP system. This network reachability information includes information on the list of Autonomous System (ASs) that reachability information traverses. BGP-4 provides a new set of mechanisms for supporting （73） interdomain routing. These mechanisms include support for advertising an IP （74） and eliminate the concept of network class within BGP. BGP-4 also introduces mechanisms that allow aggregation of routes, including （75） of AS paths. These changes provide support for the proposed supernettting scheme.

（71）

A. connecting

B. resolving

C. routing

D. supernettting

（72）

A. secubility

B. reachability

C. capability

D. reliability

（73）

A. answerless

B. connectionless

C. confirmless

D. classless

（74）

A. prefix

B. suffix

C. infix

D. reflex

（75）

A. reservation

B. relation

C. aggregation

D. connection

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第3题

●Border Gateway Protocol（BGP) is inter-autonomous system （71) protocol. BGP is based on a

●Border Gateway Protocol(BGP) is inter-autonomous system (71) protocol. BGP is based on a routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomous system routing because there are occasions on which the route with the smallest (72) count is not the preferred route. For example, we may not want a packet through an not secure even though it is the shortest route. Also, distance vector routing is unstable due to the fact that the routers announce only the number of hop counts to the destination without actually defining the path that leads to that (73) ．A router that recevives a distance vector advertisement packet may be fooled if the shortest path is actually calculated through the receiving router itself. Link (74) routing is also not a good candidate for inter-autonomous system routing because an Internet is usually too big for this routing method. To use link state routing for the whole internet would require each routex to have a huge link state database. It would also take a long time for each router to calculate its rousting (75) using the Dijkstra algorism.

（71）

A. routing

B. switching

C. transmitting

D. receiving

(72)

A. path

B. hop `

C. route

D. packet

(73）

A. connection

B. window

C. source

D. destination

(74)

A. status

B. search

C. state

D. research

(75）

A. table

B. state

C. metric

D. cost

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第4题

要插人一个图片1.jpg，边椎为0，居中对齐，左右两侧与其他对象之间的距离为5个像素,下列HTML语句正确的是__（）

A.<img src="1.jpg" border=0 align= center" hspace=5>

B.<img src= "1.jpg" border=0 align= "center" vspace= 5>

C.<P align=center ><img src="1.jpg border=0 hspace= 5></p>

D.<p align= "center ><ing src= "1.jpg" size=0 hspace=5> </p>

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第5题

有CSS代码：

.box{

width:200px;

height:100px;

border:10px solid red;

}

.box p{

width:100px;

height:100px

padding-top:50%;

background-color:green;

}

同时具有如下html代码：

......

＜div class="box"＞

＜p＞段落内容＜p＞

＜/div＞

......

请计算p标签在页面中真实占据高度为多少？（ )

A.200px

B.120px

C.150px

D.220px

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第6题

【填空题】Simba and Nala were p 1 .They often played...

【填空题】Simba and Nala were p 1 .They often played with each other from d 2 till dusk. Simba had long been wondering about the s 3 place beyond a mountain on the north border of Pride Rock. He once asked his father about it, but only felt more c 4 when Mufasa warned him not to go there. One day, Simba d 5 asked Nala whether she dared to venture beyond the border with him. In o 6 not to be despised by Simba, Nala nodded her head. They soon set off. Simba was so e 7 to get to the mountain that on their way there, he looked round for several times and shouted to Nala“Come on, don’t dawdle!” When the sun set, they finally stood on the top of the mountain. Stretched before their eyes was a large elephant g 8 . Both Simba and Nala became frozen with terror. But they could never imagine that a few s 9 hyenas were crawling t 10 them from behind.

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第7题

A—Free delivery to your door B—Toll gate C—No entry D—Strict

ly no parking E—Luggage must not be put in the gateway F—Mind the gap G—Welcome aboard H—Luggage reclaim I—Toilet engaged J—Ticket valid until 30 June 2003 K—Buy one and get anyone free L—Save up to 40% M—Free of charge N—Close the door behind you O—Take away service available P—Danger of death. Keep out Q—Admission is free R—Ticket office S—Bicycle hire T—Please call for assistance Examples：（H ）取行李（T ）打电话咨询（）欢迎登机（）不收门票

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第8题

【单选题】关于下面代码中动画执行顺序的说法正确的是（） $（"p").animate（{left:"500px"}，3000) .animate（{height:"500px"}，3000) .css（"border"，"5px solid blue") })

A、三者同时执行

B、位置上先把left的变为500px，然后高度变为500px，然后p的边框变为”5px solid blue”

C、位置上先把left的变为500px，然后p的边框变为”5px solid blue” ，然后高度变为500px

D、css()方法并不会加入动画队列，所以首先p的边框变为”5px solid blue”，然后位置上把left的变为500px，最后高度变为500px

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第9题

如图所示，在半径为R、介电常数为如图所示，在半径为R、介电常数为的均匀介质球的中心放有点电荷+q，在介质球外是真空。则在介质球内部距

的均匀介质球的中心放有点电荷+q，在介质球外是真空。则在介质球内部距离球心为r(r＜r)处p点的场强大小为 style="border:0px;vertical-align:top;max-height:none;max-width:520px;backface-visibility:hidden;image-rendering:-webkit-optimize-contrast;transform:translateZ(0px);width:128px;height:125px" data="4308"＞

A. 如图所示，在半径为R、介电常数为的均匀介质球的中心放有点电荷+q，在介质球外是真空。则在介质球内部距

B. 如图所示，在半径为R、介电常数为的均匀介质球的中心放有点电荷+q，在介质球外是真空。则在介质球内部距

C. 如图所示，在半径为R、介电常数为的均匀介质球的中心放有点电荷+q，在介质球外是真空。则在介质球内部距

D. 如图所示，在半径为R、介电常数为的均匀介质球的中心放有点电荷+q，在介质球外是真空。则在介质球内部距

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第10题

● 在某台PC上运行 ipconfig /all命令后得到如下结果，下列说法中错误的是（38）。 C:\Documents and

● 在某台PC上运行 ipconfig /all命令后得到如下结果，下列说法中错误的是（38）。

C:\Documents and Settings\wy＞ipconfig /all

Ethernet adapter 本地连接:

Connection-specific DNS Suffix . :

Description . . . . . . . . . : Realtek RTL8168C(P)/8111C(P) PCI-E Gigabit Ethernet NIC

Physical Address. . . . . . . . . : 00-1F-D0-83-AA-0F

Dhcp Enabled. . . . . . . . . . . : Yes

Autoconfiguration Enabled . . . . : Yes

IP Address. . . . . . . . . . . . : 215.155.3.153

Subnet Mask . . . . . . . . . . . : 255.255.255.192

Default Gateway . . . . . . . . . : 215.155.3.190

DHCP Server . . . . . . . . . . . : 152.50.255.1

DNS Servers . . . . . . . . . . . : 8.8.8.8

252.117.112.3

Lease Obtained. . . . . . . . . . : 2010-8-9 1:19:55

Lease Expires . . . . . . . . . . : 2010-8-9 9:19:55

（38）

A. 该PC机IP地址的租约期为8小时

B. 该 PC访问Web 网站时最先查询的 DNS服务器为8.8.8.8

C. 接口215.155.3.190和152.50.255.1之间使用了DHCP中继代理

D. DHCP服务器152.50.255.1可供分配的 IP地址数只能为 61

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The Border Gateway Protocol（BGP)is an interautonomous system【S1】protoco1．The primary funct