單項(xiàng)選擇題Which option is true when calculating round-trip delay in IP SLA operations？（）

A.The processing time on the end routers is only assessed for operations that involve the responder.
B.The processing time on the end routers is only assessed for operations that involve the transmitter.
C.The processing time on the end routers is only assessed for operations that involve both the responder and the transmitter.
D.The processing time on the end routers is not assessed for neither the responder nor the transmitter.


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1.單項(xiàng)選擇題When running IP SLA，which application type should be used if you want to know round-trip delay，jitter，and packet loss for the full path？（）

A.ICMP path echo
B.UDP echo
C.ICMP path jitter
D.Application Performance Monitor
E.TCP connect

4.多項(xiàng)選擇題

Refer to the exhibit. Users from the Engineering VLAN complain that every time Business VLAN users have a network connectivity issue，the Engineering VLAN users usually have problems experiencing slow response or network connectivity problems. After troubleshooting， anunauthorized switch 2 was found.This unauthorized switch has been a regular problem， assuming the root bridge function under thespanning-tree domain and causing the Engineering VLAN to be unstable. Which three of these actionscould be suggested to fix the problem？（）

A.Upgrade Spanning Tree Protocol to Rapid Spanning Tree Protocol.
B.Change Business VLAN PCs to switch 1 and switch 4.
C.Force the root bridge to be switch 2， instead.
D.Adjust spanning-tree timers （max-age and forward-delay）.
E.Shut down all unused ports.
F.Use MSTP to separate the Engineering VLAN from the Business VLAN to optimize spanning-tree convergence time within each VLAN.

5.多項(xiàng)選擇題

Refer to the exhibit. As a network administrator， you have configured a dual-rate， dual-bucket policer in accordance with RFC 2698 on the serial interface of you router， connecting to your provider. The SLA with your provider states that you should only send AF31 （limited to 150 kb/s）， AF32 （limited to 50 kb/s）and AF33 （best effort）. Your service provider claims you are not conforming to the SLA.Which two things are wrong with this configuration？ （）

A.The configuration of a service policy on half-duplex Ethernet interfaces is not supported.
B.The class class-default sub-command of the policy-map limit command should be set to the DSCP default.
C.The violate action is wrong.
D.This policer configuration is not implementing RFC 2698 dual-bucket， dual-rate.
E.The policer is configured in the wrong class.