CMS专题

多选题What are two major sources of delay that can be managed by QoS in voice-enabled networks？（）Apropagation delayBvoice packet serialization delayCcongested egress queuesDheader overheadEpackets dropped because of CRC errors

题目
多选题
What are two major sources of delay that can be managed by QoS in voice-enabled networks？（）
A

propagation delay

B

voice packet serialization delay

C

congested egress queues

D

header overhead

E

packets dropped because of CRC errors

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相似问题和答案

第1题：

● Serialization delay and （71） delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the （72） on the wire, and queuing delay (depth of the queue) are improved by increasing the （73） from a 128Kbps circuit to a T1. However, three other components of delay, routing/switching delay, distance delay, and protocol delay are components that can not be positively affected by an （74） in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the （75） of the application will only result in an increased bandwidth with no positive effects on performance.


正确答案：B,C,C,A,D

第2题：

Serialization delay and(71)delay are the two components of network delay that are improved by increasing bandwidth. Serialization delay, i.e. the amount of time it takes to put the(72)on the wire, and queuing delay(depth of the queue)are improved by increasing the(73)from a 128Kbps circuit to a THowever, three other components of delay, routing/switching deiay, distance delay, and protocol delay are components that can not be positively affected by an(74)in bandwidth. If the circuits are not over-utilized, then increasing the bandwidth to improve the(75)of the application will only result in an increased bandwidth with no positive effects on performance.

A．buffering

B．queuing

C．receiving

D．timing


正确答案：B

第3题：

听力原文：M: Can you give an example of types of risks Banks face?

W: Yes. The major type of risks is called credit risk. It means a counterpart fails to perform. according to a contractual arrangement.

Q: What are they talking about?

(13)

A．A contractual arrangement.

B．A counterpart.

C．Many types of risks.

D．Credit risk.


正确答案：D
解析：他们在谈论银行所面临的风险，女士说“The major type of risks is called credit risk.”，所以D选项符合题意。

第4题：

What are two security appliances that can be installed in a network? （）

  • A、ATM
  • B、IDS
  • C、IOS
  • D、IOX
  • E、IPS
  • F、SDM

正确答案:B,E

第5题：

What are two security appliances that can be installed in a network?()

A.ATM

B.IDS

C.IOS

D.IOX

E.IPS

F.SDM


参考答案：B, E

第6题：

You are modifying the default route preference under the [edit protocols] hierarchy. In which two routing information sources can you change the default preference value?()

A. local

B. OSPF

C. direct

D. BGP


参考答案：B, D

第7题：

What are two design guidelines for VoIP networks? ()

A.Delay should be no more than 10 ms.

B.Loss should be no more than1 percent.

C.Jitter should be less then 40 ms.

D.Managed bandwidth is strongly recommended for voice control traffic.


参考答案：B, D

第8题：

Identify the two direct sources from where SQL plans can be loaded into the SQL plan baselines.()

A. Cursor cache

B. Stored outline

C. SQL Tuning Set

D. Automatic Workload Repository (AWR) snapshots


参考答案：A, C

第9题：

What are two security appliances that can be installed in a network (Choose two.)()。

A.ATM

B.IDS

C.IOS

D.IOX

E.IPS

F.SDM


参考答案：B, E

第10题：

What are two design guidelines for VoIP networks? （）

  • A、Delay should be no more than 10 ms.
  • B、Loss should be no more than1 percent.
  • C、Jitter should be less then 40 ms.
  • D、Managed bandwidth is strongly recommended for voice control traffic.

正确答案:B,D

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