CCIE RS(400-101)笔试题库136Q

rack38

謝謝分享

surpasss

好东西 求分享

nichin0619

Thanks for share

ecomno

準嗎?

ecomno

这个稳不稳啊

ecomno

这个稳不稳啊

哖輕ゐ爭朝タ

11112223333

handys

谢谢。好东西！！！！！

cucsea

谢谢分享，太棒了

Susan_SC

题在哪呢？

Susan_SC

题在哪呢？

Susan_SC

20 题WRED 应该是对的。
http://www.cisco.com/c/en/us/td/ ... qos_c/qcfconav.html
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/ W) r+ y9 X( ^4 B+ p6 ?$ k# ^Weighted Random Early Detection
This section gives a brief introduction to RED concepts and addresses WRED, the Cisco implementation of RED for standard Cisco IOS platforms.

; B7 g* F/ n/ J- }' h: ~" kWRED avoids the globalization problems that occur when tail drop is used as the congestion avoidance mechanism on the router. Global synchronization occurs as waves of congestion crest only to be followed by troughs during which the transmission link is not fully utilized. Global synchronization of TCP hosts, for example, can occur because packets are dropped all at once. Global synchronization manifests when multiple TCP hosts reduce their transmission rates in response to packet dropping, then increase their transmission rates once again when the congestion is reduced.

kinwei

thank you for sharing

cisco9999

Thank you for share

Susan_SC

110题答案不应该B；应该是D.

1 {1 N7 E: m3 p, ]% U- rhttp://www.cisco.com/c/en/us/abo ... best-practices.html
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Control Plane Policing – CoPP is the Cisco IOS-wide route processor protection mechanism. As illustrated in Figure 2, and similar to rACLs, CoPP is deployed once to the punt path of the router. However, unlike rACLs that only apply to receive destination IP packets, CoPP applies to all packets that punt to the route processor for handling. CoPP therefore covers not only receive destination IP packets, it also exceptions IP packets and non-IP packets. In addition, CoPP is implemented using the Modular QoS CLI (MQC) framework for policy construction. In this way, in addition to simply permit and deny functions, specific packets may be permitted but rate-limited. This behavior substantially improves the ability to define an effective CoPP policy. (Note: that “Control Plane Policing” is something of a misnomer because CoPP generally protects the punt path to the route processor and not solely the control plane.)