To have the best possible voice quality and to utilize effec

题目
多选题
To have the best possible voice quality and to utilize effectively the available bandwidth, which queuing and compression mechanisms need to be used?()
A

class-based weighted fair queuing (CBWFQ)

B

low latency queuing (LLQ)

C

priority queuing (PQ) or custom queuing (CQ)

D

Real-Time Transport Protocol (RTP) header compression

E

TCP header compression

F

UDP header compression

参考答案和解析
正确答案: B,C
解析: 暂无解析
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相似问题和答案

第1题:

As you will see in our price-list, we have offered very competitive prices, supplying you our best quality goods.We solicit that you will favor us with your orders, which shall always have our best attention.(英译中)


参考答案:贵公司将会从我方价格表中看到,我方向贵公司提供了价廉物美的商品。敬请贵公司向我方订货,我方会精心关照的。

第2题:

共用题干
第二篇

Although it can be argued that voice,and E-mail are more efficient,and in many ways,more convenient,I still prefer to communicate in person,or if that is not possible,by telephone.In my expenence,face-to-face interactions are best for a number of reasons.In the first place,when you hear the speaker's tone of voice,you are better able to judge the attitude and emotions that can be easily hidden in a written reply.In addition,the exchange is more immediate.Even instant messaging isn't as fast as a verbal interaction in person or by phone.E-mail seems efficient;however, sometimes multiple messages over several days are required to clarify the information that a short phone call would have taken care of in one communication.We have all tried to return a voice mail only to hear a recording on the original caller's voice mail. Clearly,no real communication is possible in a situation that only allows one person to talk.Moreover,the body language and the expression on the speaker's face often communicate more than the words themselves.Research indicates that more than 80 percent of a message is nonverbal.The way that a speaker stands or sits can indicate interest or disagreement.The eye contact and the movement of the eyebrows and the mouth can actually communicate the opposite of the words that the speaker is saying. Finally,no technology has succeeded in duplicating a firm handshake to close a deal,a hug to encourage a friend,or a kiss goodbye.Until E-mail and voice mail can provide the subtle communication,the immediate interaction,and the emotional satisfaction of a face-to-face conversation,complete with facial expressions and gestures,I will prefer to talk instead of to type.

If communicating in person is not possible,the writer prefers to_________.
A:use phone
B:write E-mail
C:leave a voice message
D:send a mail

答案:A
解析:
主旨推断题。选项A、C、D在文中都有所提及,只有B选项没有提及。
细节题。文中第一句中说:尽管有人会说语音留言和电子邮件更为快捷,而且从很多方面来说更为便利,我还是喜欢面对面的交流,如果面对面的交流无法实现那就通过打电话来交流。因此本题选A。
细节题。A、B、C在文章中都有所提及。关于D选项,文中第五句提到:甚至是即时通信服务也没有当面的口头交流或者电话交流那么迅速。由此可知D选项是不对的,因此本题选D。
词义推断题。该句意思是:最后,到目前为止还没有哪项技术可以成功地复制出一笔买卖成交时有力的握手、鼓励朋友时的拥抱或者是道别时的亲吻。想要说明作者之所以喜欢面对面交流的最后一个原因就是可以获得那种情感上的满足,而现代化的通讯设施是无法复制出这个来的。duplicate“复制”。
主旨题。本文第一句话开门见山就提出:我喜欢面对面的交流。接下来用“首先”“其次”和“最后”从三方面来讲述为什么我喜欢面对面的交流胜过其他一些现代化的通讯手段。因此选B。

第3题:

VThe Pareto Principle is a technique used to determine which quality control problems in a particular process should be corrected. Which of the following statements best represents the philosophy employed by this principle?

A . In order to minimize financial losses from quality control problems, all problems which have a measureable cost should be corrected

B . the majority of defects are caused by a small percentage of the identifiable problems. Improvement efforts should be reserved for these vital problems.

C . in order to achieve zero defects, all quality control problems, including those which do not have a direct financial cost should be corrected.

D . generally, 80% of the quality control problems are justifiable for correction via cost-benefit analysis. The remaining 20% are not financially worthy of improvement efforts.

E . A and D


正确答案:B

第4题:

Which two pairings match the application with the correct Cos value?()

  • A、CoS 0 = Best-Effort Data
  • B、CoS 1 = Best-Effort Data
  • C、CoS 3 = High Priority
  • D、CoS 4 = High Priority Data
  • E、CoS 5 = Voice Bearer
  • F、CoS 7 = Voice Bearer

正确答案:A,E

第5题:

You have a good voice.()

AThank you

BNot at all  

CJust so so

DMy voice isn't good


A

第6题:

The ERX Edge Router can utilize which two classifiers?()

A.multi field

B.policy classifier

C.quality of service

D.behavior aggregate


参考答案:A, D

第7题:

共用题干
第二篇

Although it can be argued that voice,and E-mail are more efficient,and in many ways,more convenient,I still prefer to communicate in person,or if that is not possible,by telephone.In my expenence,face-to-face interactions are best for a number of reasons.In the first place,when you hear the speaker's tone of voice,you are better able to judge the attitude and emotions that can be easily hidden in a written reply.In addition,the exchange is more immediate.Even instant messaging isn't as fast as a verbal interaction in person or by phone.E-mail seems efficient;however, sometimes multiple messages over several days are required to clarify the information that a short phone call would have taken care of in one communication.We have all tried to return a voice mail only to hear a recording on the original caller's voice mail. Clearly,no real communication is possible in a situation that only allows one person to talk.Moreover,the body language and the expression on the speaker's face often communicate more than the words themselves.Research indicates that more than 80 percent of a message is nonverbal.The way that a speaker stands or sits can indicate interest or disagreement.The eye contact and the movement of the eyebrows and the mouth can actually communicate the opposite of the words that the speaker is saying. Finally,no technology has succeeded in duplicating a firm handshake to close a deal,a hug to encourage a friend,or a kiss goodbye.Until E-mail and voice mail can provide the subtle communication,the immediate interaction,and the emotional satisfaction of a face-to-face conversation,complete with facial expressions and gestures,I will prefer to talk instead of to type.

Which is the best title for the passage?
A:Effective Communication.
B:Why I Prefer Face-to-face Interaction.
C:Nonverbal Language.
D:Advantages of Modern Communication.

答案:B
解析:
主旨推断题。选项A、C、D在文中都有所提及,只有B选项没有提及。
细节题。文中第一句中说:尽管有人会说语音留言和电子邮件更为快捷,而且从很多方面来说更为便利,我还是喜欢面对面的交流,如果面对面的交流无法实现那就通过打电话来交流。因此本题选A。
细节题。A、B、C在文章中都有所提及。关于D选项,文中第五句提到:甚至是即时通信服务也没有当面的口头交流或者电话交流那么迅速。由此可知D选项是不对的,因此本题选D。
词义推断题。该句意思是:最后,到目前为止还没有哪项技术可以成功地复制出一笔买卖成交时有力的握手、鼓励朋友时的拥抱或者是道别时的亲吻。想要说明作者之所以喜欢面对面交流的最后一个原因就是可以获得那种情感上的满足,而现代化的通讯设施是无法复制出这个来的。duplicate“复制”。
主旨题。本文第一句话开门见山就提出:我喜欢面对面的交流。接下来用“首先”“其次”和“最后”从三方面来讲述为什么我喜欢面对面的交流胜过其他一些现代化的通讯手段。因此选B。

第8题:

( ) you are in the world, when you walk in to our hotel we want you to have best lodging experience possible.

A.Whoever

B.Whatever

C.Whenever

D.Wherever


参考答案:D

第9题:

You have a good voice.()

  • A、Thank you
  • B、Not at all  
  • C、Just so so
  • D、My voice isn't good

正确答案:A

第10题:

Which set of classes correctly identifies the four traffic classes, from highest priority to lowest priority, specified in the 802.11e standard?()

  • A、 gold, silver, bronze, and platinum
  • B、 platinum, gold, silver, and bronze
  • C、 titanium, gold, silver, and bronze
  • D、 voice and video, best effort, background, and scavenger
  • E、 voice, video, best effort, and background
  • F、 voice, video, best effort, and scavenger

正确答案:E

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