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VOIP has been implemented at the main office of the Company network. Which two statements  are true about voice packets in a LAN？（）A、 Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media  portion of the VoIP communicat

题目

VOIP has been implemented at the main office of the Company network. Which two statements  are true about voice packets in a LAN？（）

  • A、 Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media  portion of the VoIP communication.  
  • B、 Voice traffic data flow involves large volumes of large packets.  
  • C、 Because a packet loss involves a small amount of data, voice traffic is less affected by packet  losses than traditional data traffic is.  
  • D、 Voice packets are encapsulated in TCP segments to allow for proper sequencing during  delivery. 
  • E、 Voice packets are very sensitive to delay and jitter. 
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相似问题和答案

第1题：

Helen loves to talk about travel. She _____ many places.

A. has gone to B. has been to C. has gone for D. has been from


正确答案：B

第2题：

听力原文：A bill may be accepted after it has been dishonored by a previous refusal to accept, or by nonpayment.

(8)

A．A bill can not be accepted after it has been dishonored by a previous refusal to accept.

B．If a bill has been dishonored by non-payment, it may not be accepted by another person.

C．If a bill has been dishonored by a previous refusal to accept, it may be accepted by another person.

D．A bill can not be accepted after it has been dishonored by non-payment.


正确答案：C
解析：单句意思为“一张以前拒付的汇票可能之后会被接受。”

第3题：

Never before in China ________ for the farmers.

A.has so much been done

B.have so much been done

C.has been done so much

D.so much have been done


参考答案：A

第4题：

Every book except these two ( ).

A、have sold

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参考答案：D

第5题：

All _____ is sheer nonsense. We must find a way out right now.

A. what has been said

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参考答案： C

第6题：

When data() , it has to be analyzed to decide what it all means.

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B.has collected

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参考答案：C

第7题：

The boy()to school already.

A、has taken

B、has been taking

C、is taken

D、has been taken


参考答案：C

第8题：

Owing to the rainy day, the football match_____.

A.has been putting off

C.put off

B.has put off

D.has been put off


参考答案：D

第9题：

He told me that he ____ in Naples the previous year.

A、has been working

B、has worked

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参考答案：C

第10题：

That man ( ) at the bus stop for the last half hour.－－－ Shall I tell him that the last bus ( )

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D.has been standing…has already gone


答案：C

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