A typical application of this(71)is ADSL. It is emerging as the technology for home-and small-office Internet connectivity. It provides either 1.5 Mb/s～8 Mb/s from the network to the user and 64 Kb/s～512 Kb/s in the reverse direction depending on the dist - itgle

题目

A typical application of this(71)is ADSL. It is emerging as the technology for home-and small-office Internet connectivity. It provides either 1.5 Mb/s～8 Mb/s from the network to the user and 64 Kb/s～512 Kb/s in the reverse direction depending on the distance, 12 000 or 18 000 feet.. The different speed for each direction gives it the(72)label. ADSL is designed to take advantage of the fact that video-on demand, telecommuting, and Internet access traffic are inherently asymmetrical. The user(73)a brief message up to the network and receives a ton of data coming back, either a movie or a piece of data download. Under such a scenario, low-speed traffic to the network is just fine. ADSL delivers high(74)where you need it and only uses a single copper pair. Through multiplexing, it also reserves(75)of the bandwidth for POTS.

A．FTTH

B．HFC

C．FTTC

D．HDSL

相似考题

1.The government is taking effective measures to overcome () difficulties.A、averageB、radicalC、currentD、typical

2.____________[A] unique [B] common [C] particular [D] typical

3.● A glue that holds the whole Internet together is the network layer protocol,(71). Unlike most older network layer protocols, it was designed from the beginning with internetworking in mind. Its job is to provide a -(72) way to transport datagrams from source to destination, without regard to whether these machines are on the same network or whether there are other networks in between them.Communication in the Internet works as follows. The (73)layer takes data streams and breaks them up into datagrams. Each datagram is transmitted through the Internet, possibly being fragmented into smaller units as it goes. When all the pieces finally get to the destination machine, they are reassembled by the(74) layer into the original datagram. This datagram is then handed to the transport layer, which inserts it into the receiving process' input stream.An IP datagram consists of a header part and a text part. The header has a (75) part and a variable length optional part.(71) A. IP (Internet Protocol)B. IP (Interworking Protocol)C. TCP (Transport Control Protocol)D. TCP (Transfer Communication Protocol)(72) A. best-qualityB. quality-guaranteedC. connection-orientedD. best-efforts(73) A. data linkB. transportC. networkD. application(74) A. data linkB. transportC. networkD. application(75) A. 40-byte fixedB. 64-byte fixedC. 20~64 bytes variableD. 20-byte fixed

4.__________[A] unusual[B] particular[C] unique[D] typical

参考答案和解析

正确答案：C

更多“A typical application of this(71)is ADSL. It is emerging as the technology for home－and sm ”相关问题

第1题：

The popular young doctor is the ____ director of the medical research institute.
A. Current
B. radical
C. average
D. typical

正确答案：A
第2题：

Even sensible men do absurd things.

A: unusual
B: ridiculous
C: special
D: typical

答案：B
解析：
句意：即使聪明的人也会做出荒唐的事情。absurd意为“荒唐的、荒谬的”，在四个选项中只有ridiculous和它同义；unusual意为“不寻常的”; special意为“特别的”;typical意为“典型的”。
第3题：

创意产业的3T理论是指的哪3T？
A．Technology, Talent, Tolerance
B．Technology, Talent, Taste
C．Technology, Taste, Tolerance
D．Technology, Talent, Time

Technology, Talent, Tolerance
第4题：

假设现在已经利用Application对象把变量a赋值为456，那么下列语句中能显示出“456”的是______。
A．＜%=Application"a"%＞
B．＜%=Application("a")%＞
C．＜%=Application(a)%＞
D．＜%=Application:a%＞

正确答案：B
第5题：

The TCP protocolis a （71） layer protocol. Each connection connects two TCPs that may be just one physical network apart or located on opposite sides ofthe globe.

A.physical
B.network
C.transport
D.application

答案：C
解析：
网络工程师
第6题：

下面代码实现一个站点访问量计数器，空白处的代码为（）。 void ____________（object sender, EventArgs e) { Application.Lock（); Application["AccessCount"] = （int)Application["AccessCount"] + 1; Application.UnLock（); }
A．Application_Start
B．Application_Error
C．Session_Start
D．Session_End

C

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