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单选题What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones?()A79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B79xx IP phones do n

题目
单选题
What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones?()
A

 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.

B

 79xx IP phones do not mark protocol packets such as DHCP, DNS, or TFTP with non-zero DSCP values.

C

 79xx IP phones do not mark voice packets with optimal DSCP values.

D

 79xx IP phones use a custom protocol to communicate CDP information to the switch.

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相似问题和答案

第1题:

What are their motives for doing it?

A:plans
B:answers
C:excuses
D: reasons

答案:D
解析:
本题考查的是对名词的认知。这句话的意思是:他们做这件事的动机是什么?motive的意思是动机,例如:Police have ruled out robbery as a motive for the killing.警方已排除因抢劫而杀人的可能。A.plans计划;B .answers答案;C .excuses借口;D.reasons原因。motive和reason意思最接近,所以选D0

第2题:

One of the reasons for the growth of population in Florida is because of its()

Aexpanding economy

Blarge number of Cuban-Americans

Cclimate

Dexotic food


C

第3题:

What do you think of Goldman? Please give your reasons. (No more than 20 words)


正确答案:

 He was a smart businessman. He invented the shopping cart and made it accepted by customers.

   Or: He was smart but he shouldn’t have used tricks to attract customers.

第4题:

What is used to provide read access to QoS configuration and statistics information on Cisco platforms thatsupport Modular QoS CLI (MQC)?()

  • A、Cisco NBAR Discovery
  • B、Cisco AutoQoS
  • C、Cisco Class-Based QoS MIB
  • D、Cisco SDM QoS Wizard
  • E、CDP

正确答案:C

第5题:

One of the reasons for the growth of population in Florida is because of its()

  • A、expanding economy
  • B、large number of Cuban-Americans
  • C、climate
  • D、exotic food

正确答案:C

第6题:

One of the biggest reasons is that the cultural bias is changing.

A:adherence
B:emphasis
C:prejudice
D:effect

答案:C
解析:
本句意思:最大的一个原因是文化偏见正在改变。bias偏见,偏心,偏向。adherence遵守,坚持;emphasis强调,重视,重要性;prejudice成见,偏见;effect影响,效应:

第7题:

What is the three main step of using the QoS feature with MQC command line interface?


正确答案:class-map,policy-map,service-policy。

第8题:

In some societies people want children for what might be family reasons.


参考答案: 在某些社会中,人们希望拥有孩子是出于所谓的家庭原因。

第9题:

What field in IP packet is used for classification by QOS?


正确答案:TOS byte.

第10题:

What does the mac packet-classify command do when applied to an interface configuration?()

  • A、 It enables MAC ACLs to be applied to only IP packets that enter the interface.
  • B、 It enables MAC ACLs to be applied to only non-IP packets that enter the interface.
  • C、 It enables MAC ACLs to be applied to all packets that enter the interface.
  • D、 It enables MAC ACLs to be used for QoS settings.

正确答案:C

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