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多項(xiàng)選擇題Which two are effects of connecting a network segment that is running 802.1D to a network segment that is running 802.1w？（）

A.the entire network switches to 802.1D and generates BPDUs to determine root bridfe status.
B.A migration delay of three seconds occurs when the port that is connected to the 802.1D bridge comes up
C.The entire network reconverges and a unique root briddge for the 802.1D segment， and a root bridge for the 802.1W segment， is chosen
D.the first hop 802.1w switch that is connected to the 802.1D runs entirely in 802.1DCompatibility mode and converts the BPDUs to either 802.1D or 802.1W segments of the network
E.Classic 802.1D timers， Such as forward Delay and Max-age， will only be used as a backup， and will not be necessary if point-to-point links and edge prots are properly identified and set by the administrator.

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1.多項(xiàng)選擇題Which two statements are true about traffic shaping？（）

A.Out-of-profile packets are queued.
B.It causes TCP retransmits.
C.Marking/remarking is not supported.
D.It does not respond to BECN and ForeSight Messages.
E.It uses a single/two-bucket mechanism for metering.

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2.多項(xiàng)選擇題When you are troubleshooting duplex mismatches， which two errors are typically seen on the fullduplex end？（）

A.runts
B.FCS errors
C.interface resets
D.late collisions

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3.單項(xiàng)選擇題A new Backup Connection is being deployed on a remote site router. the stability of the connection has been a concern. in order to provide more information to EIGRP Regarding this interface， You wish to incorporate the "Reliability" cost metric in the EIGRP Calculation with the command metric weights 1 0 1 0 1. What impact will this modification on the remote site router have for other existing EIGRP neighborships from the same EIGRP Domain？（）

A.Existing Neighbors will immediately begin using the new metric.
B.Existing Neighbors will use the new metric after clearing the EIGRP Neighbors.
C.Existing Neighbors will resync， maintaining the neighbor relationship
D.All ecisting neighbor relationships will go down

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4.單項(xiàng)選擇題A branch router is configured with an egress QoS policy that was designed for a total number of 10 concurrent VOIP Calls. Due to Expansion， 15 VOIP Calls are now running over the link， but after the 14th call was established， all calls were affected and the voice quality was dramatically degraded. Assuming that there is enough bandwidth on the link for all of this traffic， which part of the QOS configuration should be updated due to the new traffic profile？（）

A.Increase the shaping rate for the priority queue.
B.Remove the policer applied on the priority queue.
C.Remove the shaper applied on the preiority queue.
D.Increase the policing rate for the priority queue.

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5.多項(xiàng)選擇題Which two commands are required to enable multicast on a router， knowing that the receivers only supports IGMPv2？（）

A.IP PIM RP-address
B.IP PIM ssm
C.IP PIM Sparse-mode
D.IP PIM Passive

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6.多項(xiàng)選擇題Which three protocols should be explicitly managed by using a CoPP policy on an Internet border router？（）

A.SMTP
B.ICMP
C.BGP
D.SSH
E.RTP
F.BitTorrent
G.VTP

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7.多項(xiàng)選擇題Which two multicast address ranges are assigned as source-specific multicast destination addresses and are reserved for use by source-specific applications and protocols？（）

A.232.0.0.0/8
B.239.0.0.0/8
C.232.0.0.0/4
D.FF3x：：/32
E.FF2x：：/32
F.FF3x：：/16

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