问答题what is the advantage of policing？

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what is the advantage of policing？

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第1题：

What are two functions of the RE?()

A. to maintain routing tables

B. to forward traffic toward its destination

C. to manage the PFE

D. to implement various services such as policing, stateless firewall filtering, and class of service

参考答案：A, C

第2题：

What is an advantage of a gate valve over a butterfly valve ________．

A.Less frequent maintenance

B.Faster operation

C.Cheaper

D.More compact

正确答案：A

第3题：

The text is mainly about _____.

［A］ the advantage of having cosmetic surgery

［B］ what kind of people should have cosmetic surgery

［C］ the reason why cosmetic surgery is so popular

［D］ the disadvantage of having cosmetic surgery

正确答案：C

本题考查文章主旨。全文首句利用数据（10年和400%）说明现在美容手术很受欢迎。第一段分析了人们做手术的心理原因。第二段表面上在谈论做美容手术的年龄，其实从侧面也说明了人们随着年龄的增长有做手术的需求。第三、四段分别从手术费用和技术发展两个角度分析手术越来越普及的原因。因此，［C］是全文主旨的概括。其他项都是文章某一部分涉及的内容，不足以说明整篇文章的主旨大意，以偏概全，不入选。

第4题：

Which of the following statemets regarding Control Plane Policing （CoPP） is correct？（）

A、Control Plane Policing （CoPP） addresses the need to protect the management planes， ensuring routingstability， availability， and critical packet delivery.
B、Control Plane Policing （CoPP） leverages MQC to define traffic classification criteria and to specifyconfigurable policy actions for the classified traffic.
C、Control Plane Policing （CoPP） uses a dedicated "control-plane" command via the Modular QoS CLI （MQC）to provide filtering and rate limiting capabilities.
D、Control Plane Policing （CoPP） uses "service policy" command under relevant interfaces to filter DOS packet to protect routing packets.
E、Control Plane Policing （CoPP） protects the transit management and data traffic through the router.

正确答案:A,B,C

第5题：

what is the advantage of policing？

正确答案: （1）bandwidth management through rate-limiting.
（2）packet marking through ip precedence， QOS group， DSCP value setting.

第6题：

What is the proper order for CoS processing for ingress packets on a Juniper router?()

A.Multifield Classifier > Forwarding Policy > Policing > BA Classifier

B.Multifield Classifier > Policing > BA Classifier > Forwarding Policy

C.BA Classifier > Policing > Multifield Classifier > Forwarding Policy

D.BA Classifier > Forwarding Policy > Policing > Multifield Classifier

参考答案：C

第7题：

Which two of these are differences between traffic policing and traffic shaping？（）

A、with traffic shaping，a router stores excess traffic in packet buffers until bandwidth is available again
B、with policing you can tune the buffer usage for traffic exceeding the specified CIR
C、with shaping you can tune the buffer usage for traffic exceeding the specified CIR
D、shaping should only be applied for ingress traffic，policing only for egress
E、policing uses a token bucket algorithm，shaping uses an SPD algorithm

正确答案:A,C

第8题：

What is the most advantage of the lean-combustion different from the routine combustion?

A.Continue running

B.Well combustion

C.Higher peak temperature

D.Lower holding time of Maximum temperature

正确答案：D

第9题：

what is the advantage of policing opposite to shaping？

正确答案: （1）policing does not require extra memory， and it does not impose variable delay.But shaping requires memory for buffering excess traffic， which creates variable delay and jitter；
（2）Policing can re-mark traffic， but traffic shaping does not re-mark traffic.
（3）Policing can be applied to the inbound and outbound traffic （with respect to an interface）， but traffic shaping applies only to outbound traffic.
1.policing dost not require extra memory.
2.policing can remark traffic.
3.policing can be used to inbound and outbound traffic.shaping is used only in outbound.

第10题：

What are two functions of the RE?（）

A、to maintain routing tables
B、to forward traffic toward its destination
C、to manage the PFE
D、to implement various services such as policing, stateless firewall filtering, and class of service

正确答案:A,C

what is the advantage of policing？

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