网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to.
空白（3）处应选择（）
A
source
B
route
C
destination
D
host
参考答案
参考解析
解析：
对于面向连接的服务，我们需要一个虚拟电路子网。让我们看看它是如何工作的。虚电路的核心思想是避免在发送每个数据时为它们选择一个新的路由。相反，当建立一个连接，将从源计算机向目标计算机选择一条路由作为连接设置的一部分并且存储到内部的路由器表中。这条路由承载着所有连接带来的流量，就跟电话系统的工作原理一样。当连接被释放时，虚电路也终止。在面向连接的服务中，每个数据包携带一个标识符，该标识符告诉它所属的虚电路。
更多 “单选题For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to. 空白（3）处应选择（）A sourceB routeC destinationD host” 相关考题
考题
What can we learn from the passage?A. We should enjoy someone who hurts us.B. We should pay more attention to our friends.C. The peace of mind is more important than the hurt itself.D. It’s better to let bitterness go along with the other person.
考题
● For （71） service, we need a virtual-circuit subnet. Let us see how that works. Theidea behind virtual circuits is to avoid having to choose a new （72） for every packet sent.Instead, when a connection is established, a route from the （73） machine to the destinationmachine is chosen as part of the connection setup and stored in tables inside the （74） . Thatroute is used for all traffic flowing over the connection, exactly the same way that thetelephone system works. When the connection is released, the virtual circuit is alsoterminated. With connection-oriented service, each packet carries an （75） telling whichvirtual circuit it belongs to.（71）A. connectionless B. connection-oriented C. datagram D. telegram（72）A. processor B. device C. route D. terminal（73）A. source B. route C. destination D. host（74）A. connections B. resources C. bridges D. routers（75）A. address B. identifier C. interface D. element
考题
听力原文：M: Excuse me! I just need to send this letter the fastest way possible.W: Let's see. We have overnight business service. That takes just two days.Where does this conversation take place?A．In a post office.B．In a hotel.C．In a bankD．In a school.
考题
If they are willing to lend us the money we need,all our problems will be__A.solvedB.causedC.coveredD.met
考题
Let us hope we can settle the matter without ______ more trouble.A. anyB. a littleC. someD. little
考题
For (71) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (72) for every packet sent. Instead, when a connection is established, a route from the (73)machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (74) That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works. When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (75) telling which virtual circuit it belongs to.A．connectionlessB．connection-orientedC．datagramD．telegram
考题
We feel()with the inconvenience the service center brought us.A. disappointedB. worriedC. surprised
考题
Dear Mr Davis,We are glad to (1)()you that 100 cases of hand drills you shipped to Sydney on 1st July have arrived in (2)()condition. It shows that you have made great (3)()in packing.As for the hand drills to be shipped to us, we would like you to have them packed in boxes of 2 dozen each, 50 boxes to a (4)()case. We are certain that you will give special care to the packing in order to avoid any damage in the process of (5)().Please let us know by cable if you can meet our requirements.Regards,Emily McPheeSales Director
考题
We took our raincoats with us , but we didn't need them _____.
A、after allB、at any rateC、all alongD、as a result
考题
"The windows need washing." "Well, let's wash them together, ________ ?A、shall weB、will weC、won't weD、should we
考题
We are at your service. Don’t to turn to us if you have any further problems.A. beg B. hesitate C. desire D. seek
考题
"Let us go,______?" the Smith said to the officer.A. will youB. won't youC. shan't weD. don't we
考题
What would you say to the hotel receptionist to get a double room?__________
A．Rent us a double room.
B．Book us a double room.
C．We'd like to have a double room.
D．Let's have a double room.
考题
We experience a burst of pleasure when we share our thoughts,and this drives us to communlcate.It is a useful feature of our brain,because it ensures that knowledge,experience and ideas do not get buried with the person who first had them,and that as a society we benefit from the products of many minds.Of course,in order for that to happen,merely sharing is not enough.We need to cause a reaction.Each time we share our opinions and knowledge,it is with the intention of having an impact on others.Here's the problem,though:we approach this task from inside our own heads.When attempting to create impact,we reflect on what is persuasive to us,our state of mind.our desires and our goals.But if we want to affect the behaviours and beliefs of the person in front of us,we need to understand what goes on inside their head.
考题
What this is telling us is that we need to first establish a middle class that is able to hold the government ________ .A.account
B.accounted
C.accounting
D.accountable
考题
In Money Everything
I don’t think money is everything,but we can’t do without it.Fox example,money can’t buy us happiness and a good education.And for another example,money can’t buy us good health and a long life.But we can not live without money.We need it for our daily necessities such as food,clothes and transportation.What’s more,we need it to live a better life.In short,we should learn the value of money and make the most of its advantages.
考题
We forgot to bring our tickets,but please let us enter,__________?A.do you
B.can we
C.will you
D.shall we
考题
We need some toothpaste.（）A、Let's go to the bookstore.B、Let's get some.C、Let's buy them.D、Let's go.
考题
单选题I’m a nervous wreck. We applied for a mortgage loan last week, and they _____ let us know this morning if it had been approved.A
were supposed toB
might haveC
would haveD
must go to
考题
问答题Practice 3 So let us mark this day with remembrance, of who we are and how far we have traveled. In the year of America’s birth, in the coldest of months, a small band of patriots huddled by dying campfires on the shores of an icy river. The capital was abandoned. The enemy was advancing. The snow was stained with blood. At a moment when the outcome of our revolution was most in doubt, the father of our nation ordered these words be read to the people: “Let it be told to the future world… that in the depth of winter, when nothing but hope and virtue could survive… that the city and the country, alarmed at one common danger, came forth to meet [it].” America. In the face of our common dangers, in this winter of our hardship, let us remember these timeless words. With hope and virtue, let us brave once more the icy currents, and endure what storms may come. Let it be said by our children’s children that when we were tested we refused to let this journey end, that we did not turn back nor did we falter; and with eyes fixed on the horizon and God’s grace upon us, we carried forth that great gift of freedom and delivered it safely to future generations. (Barack Obama: Inaugural Address)
考题
单选题For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to.
空白（1）处应选择（）A
connectionlessB
connection-orientedC
datagramD
telegram
考题
单选题Your network consists of a single Active Directory domain.You implement a new subnet. On the new subnet， you install a new DHCP server that runs Windows Server 2003 Service Pack 2 （SP2）. You create a scope for the 192.168.10.0/24 network ID. You connect a new client computer named Client1 to the subnet. Client1 runs Windows XP Professional Service Pack 3 （SP3）. You discover that Client1 has an IP address of 169.254.10.22 and is configured to receive IP configurations automatically.You need to ensure that Client1 receives an IP configuration from Server1. What should you do？（）A
Activate the DHCP scope.B
Create a reservation for Client1.C
Enable BOOTP forwarding on the router.D
Configure a DHCP Relay Agent on the subnet.
考题
单选题—I think we need to sit down and have a talk.—I ______ agree more. Let’s take the bench over there.A
couldB
couldn’tC
shouldD
shouldn’t
考题
单选题I’m a nervous wreck. We applied for a mortgage loan last week, and they ______ let us know this morning if it had been approved.A
were supposed to B
might haveC
would have D
must go to
考题
单选题If we’re going to repaint the school walls, we need to ______.A
draw pictures wellB
wear some old clothesC
bring some tools with us
考题
单选题We need to devise a plan or a strategy that will put us in a comfortable position to be competitive while ______ costs by ten percent.A
reducingB
preventingC
losingD
leaving
热门标签
最新试卷
